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How to install and configure DNS server in ubuntu 14.04

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<span style="color: #990000; font-weight: normal;"><u>How to configure DNS server in ubuntu 14.04</u></span></h1>
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<b style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.2000007629395px;">DNS Server</b><span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.2000007629395px;">. Domain Name System (</span><b style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.2000007629395px;">DNS</b><span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.2000007629395px;">) is the name resolution protocol for TCP/IP networks, such as the Internet. Client computers query a </span><b style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.2000007629395px;">DNS server</b><span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.2000007629395px;"> to resolve memorable, alphanumeric </span><b style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.2000007629395px;">DNS</b><span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.2000007629395px;"> names to the IP addresses that computers use to communicate with each other.<a href="https://help.ubuntu.com/14.04/serverguide/dns-configuration.html">More Info</a></span><br />
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<ul style="text-align: left;">
<li><strong style="background-color: white; display: block; font-family: Arial, sans-serif; margin: 0px 0px 3px; padding: 0px; text-decoration: none;"><a href="http://www.hackthesec.co.in/2016/01/how-to-setup-dns-bind-server-on.html" style="background-color: white; font-family: Arial, sans-serif; margin: 0px; padding: 0px; text-decoration: none;"></a><a href="http://www.hackthesec.co.in/2016/01/how-to-setup-dns-bind-server-on.html" style="margin: 0px; padding: 0px; text-decoration: none;"><strong style="display: inline !important; margin: 0px 0px 3px; padding: 0px;"><span style="color: red; font-size: large;">How to Setup <mark style="display: inline; margin: 0px; padding: 0px;">dns</mark> (Bind) Server on CentOS/RHEL 7/6/5</span></strong></a></strong></li>
</ul>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiGq_yKmYg1KmOL7jL5bS-qzMryJn-Ffnn8Yt7rwudUwAxfYtYrUZE8H5ZLJp67qaI7bAQra2hiNRPTfYHspeVsjFtw9-sdcYTqgu6feCar75ltyxjPVIl4a31pYFFqVo9KV7VGjeh1lvUe/s1600/dns_bind_www.hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiGq_yKmYg1KmOL7jL5bS-qzMryJn-Ffnn8Yt7rwudUwAxfYtYrUZE8H5ZLJp67qaI7bAQra2hiNRPTfYHspeVsjFtw9-sdcYTqgu6feCar75ltyxjPVIl4a31pYFFqVo9KV7VGjeh1lvUe/s1600/dns_bind_www.hackthesec.co.in.jpg" /></a></div>
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<span style="color: #0b5394; font-family: Roboto Slab;"><span style="font-size: 24px; line-height: 34px;"><b>DNS server installation</b></span></span></div>
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<span style="color: #0b5394;">Step 1:</span><span style="color: #333333;"> </span>Update the repositories.</div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; line-height: 1.3em;"># </span><span style="color: lime;"><span style="line-height: 15.6000003814697px;">sudo apt-get update</span></span></pre>
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<span style="color: #0b5394;">Step 2 : </span>Install bind9 using the below command.</div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: 'Roboto Slab'; line-height: 1.3em;"># </span><span style="color: lime;"><span style="line-height: 15.6000003814697px;">sudo apt-get install bind9</span></span><span style="color: white; font-family: 'Roboto Slab'; line-height: 1.3em;">
</span></pre>
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Now installation is over, please proceed with configuration.</div>
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<span style="color: #0b5394; font-family: Roboto Slab;"><span style="font-size: 24px; line-height: 34px;"><b>Caching nameserver</b></span></span></div>
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<span style="font-family: Roboto Slab; font-size: large;"><span style="line-height: 28px;">Caching nameserver will remember all the DNS queries made and serves locally when the domain is queried second time. Default configuration will act as a caching nameserver, you just need is to add public DNS IPs in the configuration file.</span></span></div>
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<span style="font-family: Roboto Slab; font-size: large;"><span style="line-height: 28px;"><span style="color: #0b5394;">Step 3 : </span>Open <span style="color: red;">/etc/bind/named.conf.options</span> file and find forwarders column , uncomment and edit like the following.</span></span></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: Verdana, sans-serif;"><span style="line-height: 15.6000003814697px;">forwarders {
       8.8.8.8;
       8.8.4.4;
       };</span><span style="line-height: 1.3em;">
</span></span></pre>
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Here 8.8.8.8 and 8.8.4.4 are google public DNS servers .<br /><span style="color: #0b5394;">Step 4 : </span>Now <b>start/restart</b> the service.</div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: 'Roboto Slab'; line-height: 1.3em;"># </span><span style="color: lime;"><span style="line-height: 15.6000003814697px;">sudo service bind9 restart</span></span><span style="color: white; font-family: 'Roboto Slab'; line-height: 1.3em;">
</span></pre>
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<span style="color: #0b5394;">Step 5 : </span>Now test using dig command . open <span style="color: red;">/etc/resolv.conf</span> and edit nameserver ip to 127.0.0.1 or your serverIP.</div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="line-height: 15.6000003814697px;">nameserver 127.0.0.1</span></span><span style="color: white; font-family: Roboto Slab;"><span style="line-height: 1.3em;">
</span></span></pre>
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<span style="font-family: Roboto Slab; font-size: large;"><span style="line-height: 28px;">Now type the below command to see results.</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="line-height: 15.6000003814697px;">root@hackthesec:~$ dig www.hackthesec.co.in
................
;; Query time: 83 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
.................</span></span><span style="color: white; font-family: Roboto Slab;"><span style="font-size: 0.9em; line-height: 1.3em;">
</span></span></pre>
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It took 83 msec for the first time . Now try the same command again.</div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="line-height: 15.6000003814697px;">root@hackthesec:~$ dig www.hackthesec.co.in
................
;; Query time: 5 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
.................</span></span><span style="color: white; font-family: Roboto Slab;"><span style="line-height: 1.3em;">
</span></span></pre>
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<span style="font-family: Roboto Slab; font-size: large;"><span style="line-height: 28px;">Now reduced to 5 msec . This time it serves from local.</span></span></div>
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<span style="color: #0b5394; font-family: Roboto Slab;"><span style="font-size: 24px; line-height: 34px;"><b>Primary master</b></span></span></div>
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Primary master configuration is just like managing DNS records for particular domain locally ( Eg: hackthesec.co.in ).<br />Scenario details:<br /><b>Domain name : hackthesec.co.in<br />Server ip : 192.168.6.5<br />Server hostname : ns.hackthesec.co.in<br />Webserver ip : 192.168.6.10 ( www.hackthesec.co.in) .<br />We need to create 2 zone files , Forward zone and reverse zone.</b></div>
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<span style="color: #0b5394; font-family: Roboto Slab;"><span style="font-size: 24px; line-height: 34px;"><b>Forward zone file</b></span></span></div>
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<span style="font-family: Roboto Slab; font-size: large;"><span style="line-height: 28px;"><span style="color: #0b5394;">Step 6 :</span><span style="color: #333333;"> </span>Create forward zone file <span style="color: red;">db.hackthesec.co.in</span> by copying db.local conf file.</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: 'Roboto Slab'; line-height: 1.3em;"># </span><span style="color: lime;"><span style="line-height: 15.6000003814697px;">sudo cp /etc/bind/db.local /etc/bind/db.hackthesec.co.in</span></span><span style="color: white; font-family: 'Roboto Slab'; line-height: 1.3em;">
</span></pre>
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<span style="font-family: Roboto Slab; font-size: large;"><span style="line-height: 28px;"><span style="color: #0b5394;">Step 7 :</span><span style="color: #333333;"> </span>Now open<span style="color: red;"> /etc/bind/db.hackthese.co.in</span> and edit like below.</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="line-height: 15.6000003814697px;">; BIND data file for local loopback interface
;
$TTL    604800
@ IN SOA ns.hackthesec.co.in. root.ns.hackthesec.co.in. (
                              2         ; Serial
                         604800         ; Refresh
                          86400         ; Retry
                        2419200         ; Expire
                         604800 )       ; Negative Cache TTL
;
@       IN      NS      ns.hackthesec.co.in.
@       IN      A       192.168.6.5
@       IN      AAAA    ::1
ns      IN      A       192.168.6.5
www     IN  A 192.168.6.10</span></span><span style="color: white; font-family: Roboto Slab;"><span style="line-height: 1.3em;">

</span></span></pre>
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<span style="color: #0b5394;">Step 11 :</span> Now restart the service.</div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: 'Roboto Slab'; line-height: 1.3em;"># </span><span style="color: lime;"><span style="line-height: 15.6000003814697px;">sudo service bind9 restart</span></span><span style="color: white; font-family: 'Roboto Slab'; line-height: 1.3em;">
</span></pre>
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<span style="font-family: Roboto Slab; font-size: large;"><span style="line-height: 28px;"><span style="color: #0b5394;">Step 12 : </span>Now test using nslookup or dig commands.</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="line-height: 15.6000003814697px;">root@hackthesec:~$ nslookup www.hackthesec.co.in
Server: 127.0.0.1
Address: 127.0.0.1#53
Name: </span></span><span style="color: white; line-height: 15.6000003814697px;">www.hackthesec.co.in</span><span style="color: white;"><span style="line-height: 15.6000003814697px;">
Address: 192.168.6.10</span></span><span style="color: white; font-family: Roboto Slab;"><span style="font-size: 0.9em; line-height: 1.3em;">
</span></span></pre>
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Now test reverse lookup</div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="line-height: 15.6000003814697px;">root@hackthesec:~$ nslookup 172.27.6.10
Server: 127.0.0.1
Address: 127.0.0.1#53
10.6.27.172.in-addr.arpa name = www.hackthesec.co.in.</span><span style="color: black; font-family: Roboto Slab;"><span style="font-size: 0.9em; line-height: 1.3em;">
</span></span></span></pre>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="line-height: 15.6000003814697px;"><a href="http://www.hackthesec.co.in/">Hack The Sec</a>
<a href="https://www.twitter.com/hackthesecurity">Hack The Sec Twitter</a>
<a href="https://www.facebook.com/htsecu">Hack The Sec Facebook</a></span></span></pre>
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How to install and configure DNS server in ubuntu 14.04

How to configure DNS server in ubuntu 14.04 DNS Server . Domain Name System ( DNS ) is the name resolution protocol for TCP/IP networks,...

How to install and configure samba on ubuntu 14.04

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<b style="color: #990000; font-size: x-large;"><u>Install and configure samba on ubuntu</u></b></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b>Samba </b>is a free software re-implementation of the SMB/CIFS networking protocol, and was originally developed by Andrew Tridgell. Samba provides file and print services for various Microsoft Windows clients and can integrate with a Microsoft Windows Server domain, either as a Domain Controller (DC) or as a domain member. As of version 4, it supports Active Directory and Microsoft Windows NT domains.</span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEin1rGXIGbQie8QFrCAVOZn9zmqeNhj5snfJrs-j_YE9prUc8se8fH-3IrlxjBJ_fAzSAFrYFxjqXx37LvGFVVGa6nC6o3JLOo-b7GHe1BxtzE3JibyGJH8eOFHV2dzGV0TQ9tkrufyv8Pd/s1600/samba-server-Linux_ww.hackthesec.co.in.jpg" imageanchor="1"><img border="0" height="170" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEin1rGXIGbQie8QFrCAVOZn9zmqeNhj5snfJrs-j_YE9prUc8se8fH-3IrlxjBJ_fAzSAFrYFxjqXx37LvGFVVGa6nC6o3JLOo-b7GHe1BxtzE3JibyGJH8eOFHV2dzGV0TQ9tkrufyv8Pd/s320/samba-server-Linux_ww.hackthesec.co.in.jpg" width="320" /></a> </div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Samba runs on most Unix, OpenVMS and Unix-like systems, such as <a href="http://www.hackthesec.co.in/search/label/Linux%20Tutorial">Linux</a>, Solaris, AIX and the BSD variants, including Apple's OS X Server, and OS X client (version 10.2 and greater). Samba is standard on nearly all distributions of Linux and is commonly included as a basic system service on other Unix-based operating systems as well. Samba is released under the terms of the GNU General Public License. The name Samba comes from SMB (Server Message Block), the name of the standard protocol used by the Microsoft Windows network file system</span></span><span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;">.</span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step 1 :</u></b> Install samba packages after updating repositories</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;"><span style="color: white;">root@hackthesec:~$ sudo apt-get update
root@hackthesec:~$ sudo apt-get </span><span style="color: lime;">install samba samba-common python-glade2</span></span></span></pre>
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<span style="color: #0b5394; font-family: Verdana, Geneva, sans-serif; font-size: large;"><span style="line-height: 26px;"><b><u>Creating Anonymous share</u></b></span></span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Everyone can access and store files without username and password .</span></span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step 2 :</u></b> Create folder for Anonymous share.</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;"><span style="color: white;">root@hackthesec:~$ sudo </span><span style="color: orange;">mkdir -p /shares/anonymous</span></span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step 3 :</u></b> Change the ownership to nobody so that everyone can access and store files in that folder.</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;"><span style="color: white;">root@hackthesec:~$ sudo </span><span style="color: lime;">chown nobody:nogroup</span><span style="color: white;"> /shares/anonymous/</span></span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step 4 :</u></b> Now define values in samba configuration to share<b> /shares/anonymous/folder.</b> /<b>etc/samba/smb.conf</b> is the main configurion file for samba .</span></span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Take a backup before editing that file .</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;"><span style="color: white;">root@hackthesec:~$ sudo cp </span><span style="color: lime;">/etc/samba/smb.conf </span><span style="color: white;">/etc/samba/smb.conf.org</span></span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;">now add the below code at the end of the file to enable share.</span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: orange; font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;">root@hackthesec:~$ sudo vim /etc/samba/smb.conf</span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;"><b><u>Example : - </u></b></span></div>
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<pre class="xtypo_info" style="background: url("assets/shadow.png") 50% 100% repeat-x rgb(245, 245, 245); border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-shadow: rgb(204, 204, 204) 0px 0px 3px; box-sizing: border-box; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 13px; font-stretch: normal; line-height: 1.42857; margin-bottom: 10px; overflow: auto; padding: 9.5px; tab-size: 4; text-shadow: rgb(255, 255, 255) 0px 1px 0px; white-space: pre-wrap; word-break: break-all; word-wrap: break-word;">[Anonymous]
       comment = Anonymous share access
       path = /shares/anonymous
       browsable = yes
       writable = yes
       guest ok = yes
       read only = no
       force user = nobody
       force group = nogroup</pre>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;"><b><u>Step 5 :</u></b> Now restart smbd service .</span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;"><span style="color: white;">root@hackthesec:~$ sudo </span><span style="color: lime;">service smbd restart</span></span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;">After restarting service . Try to access share from windows client (Goto -> RUN ->\<b><span style="color: #990000;">serverIP </span></b>) . you could access anonymous share folder without username and password, try to create or copy files to that folder.</span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><br /></span></span></div>
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<span style="color: #0b5394; font-family: Verdana, Geneva, sans-serif; font-size: large;"><span style="line-height: 26px;"><b><u>Creating secured share</u></b></span></span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Secured shares can be accessed using username and password .Here for example, I’m going to create share <b><span style="color: #990000;">project1</span></b>.</span></span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step 6 :</u></b> Create a folder for share .</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;"><span style="color: white;">root@hackthesec:~$ sudo </span><span style="color: lime;">mkdir -p /shares/project1</span></span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;"><b><u>Step 7 :</u></b> Create a new group smbproj1,so that Users added to this group can access project1 share.</span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;"><span style="color: white;">root@hackthesec:~$ sudo </span><span style="color: orange;">addgroup </span><span style="color: white;">smbproj1</span></span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;"><b><u>Step 8 :</u></b> Modify ownership and permission for the folder.</span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;"><span style="color: white;">root@hackthesec:~$ sudo chown root:smbproj1 /shares/project1/
</span><span style="color: lime;">root@hackthesec:~$ sudo chmod 770 /shares/project1/</span></span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;"><b><u>Step 9 :</u></b> Now define values in the configuration file .</span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;"><span style="color: white;">root@hackthesec:~$ sudo vim /etc/samba/</span><span style="color: orange;">smb.conf</span></span></span></pre>
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<b style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;"><u>Example : - </u></b></div>
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<div style="color: #333333; font-family: Verdana, Geneva, sans-serif; line-height: 19.2px;">
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<pre class="xtypo_info" style="background: url("assets/shadow.png") 50% 100% repeat-x rgb(245, 245, 245); border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-shadow: rgb(204, 204, 204) 0px 0px 3px; box-sizing: border-box; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 13px; font-stretch: normal; line-height: 1.42857; margin-bottom: 10px; overflow: auto; padding: 9.5px; tab-size: 4; text-shadow: rgb(255, 255, 255) 0px 1px 0px; white-space: pre-wrap; word-break: break-all; word-wrap: break-word;">[Project1]
         comment = Project1 Share
         path = /shares/project1
         valid users = @smbproj1
         guest ok = no
         writable = yes
         browsable = yes</pre>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;"><b><u>Step 10 :</u></b> Now restart smbd service .</span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;"><span style="color: white;">root@hackthesec:~$ sudo service smbd </span><span style="color: lime;">restart</span></span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;">After restarting service, you could see <b><span style="color: #990000;">Project1</span></b> share . Additional secured shares can be created in the same way.</span></div>
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<img src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMXriU1ne-PK5IGw-c8-N452rjRjDGK0aDcSmlakO_Ee0kSF0MRHcwjKJG5hzI4Uia4Rn5_Ed_ARXqw8rj26ycVGVBjOFp1O008IYxry0hA9vIoM71XBHpVUCAc61SnE1JqB1VUs1S-lVB/s1600/setup-file-server-ubuntu-1404-www.hackthesec.co.in.png" /></div>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;"><br /></span></div>
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<span style="color: #0b5394; font-family: Verdana, Geneva, sans-serif; font-size: large;"><span style="line-height: 26px;"><b><u>User creation</u></b></span></span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">Add new user john for accessing project1 share</span></span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step 11 :</u></b> Create a user john .</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;"><span style="color: white;">root@hackthesec:~$ sudo </span><span style="color: orange;">useradd john -s</span><span style="color: white;"> /usr/sbin/nologin -G smbproj1</span></span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;">-s /usr/sbin/nologin : Restricting shell access</span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">-G smbproj1 : Added to smbproj1 group</span></span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><br /></span></span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;"><b><u>Step 12 :</u></b> Create samba password for user john</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;"><span style="color: white;">root@hackthesec:~$ sudo </span><span style="color: lime;">smbpasswd </span><span style="color: white;">-a john</span></span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;">Now user john can access Project1 share. Additional users can be added in the same way.</span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">For existing users use usermod command to add user in smbproj1 group and create samba password using smbpasswd.</span></span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;">root@hackthesec:~$ sudo usermod mike -G smbproj1</span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif; font-size: 15px; line-height: 26px;">For accessing multiple shares. Example: dave has access to multiple project groups like smbproj1 and smbproj2.</span></div>
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<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: Trebuchet MS, sans-serif; font-size: medium;"><span style="line-height: 15.6px;">root@hackthesec:~$ sudo usermod dave -G smbproj1,smbproj2</span></span></pre>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">For troubleshooting, Use <b><span style="color: #990000;">testparm </span></b>command</span></span></div>
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<span style="font-family: Verdana, Geneva, sans-serif;"><span style="font-size: 15px; line-height: 26px;">For more info <a href="https://help.ubuntu.com/lts/serverguide/samba-fileserver.html">Samba file server guide</a></span></span></div>
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How to install and configure samba on ubuntu 14.04

Install and configure samba on ubuntu Samba is a free software re-implementation of the SMB/CIFS networking protocol, and was originall...

How to Setup DHCP server on ubuntu 14.04

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<span style="color: #990000;"><i><u>Setup DHCP server on ubuntu 14.04</u></i></span></h1>
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<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.8400001525879px;">The Dynamic Host Configuration Protocol (</span><b style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.8400001525879px;"><a href="http://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol">DHCP</a></b><span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.8400001525879px;">) is a network protocol used to assign IP</span></div>
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<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.8400001525879px;"> addresses and provide configuration information to devices such as </span><b style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.8400001525879px;">servers</b><span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.8400001525879px;">, desktops, or </span></div>
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<span style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.8400001525879px;">mobile devices, so they can communicate on a network using the Internet Protocol (IP).</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj2ait-N2HbLkR9pQe8tC3RHJLSmNHmFbKZxICkJBN9kNqnjMgxXeaVZn4Y0AIGRp9V1Rq9c-gz_wmgG6YXy5061HzeisnhBgA1MKW5XPRRgRJsGpkMkWfLL0ugJHTIEF5SCYhvFLKE4DGM/s1600/DHCP_Server-www.hackthesec.co.in.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj2ait-N2HbLkR9pQe8tC3RHJLSmNHmFbKZxICkJBN9kNqnjMgxXeaVZn4Y0AIGRp9V1Rq9c-gz_wmgG6YXy5061HzeisnhBgA1MKW5XPRRgRJsGpkMkWfLL0ugJHTIEF5SCYhvFLKE4DGM/s1600/DHCP_Server-www.hackthesec.co.in.gif" /></a></div>
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<h2 style="background-color: white; clear: both; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 24px; font-weight: normal; height: auto; line-height: 28px; margin: 0px; padding: 0px; width: 614px;">
<span style="color: #0b5394;">DHCP server on <a href="http://www.hackthesec.co.in/search/label/Ubuntu">ubuntu</a> 14.04</span></h2>
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<span style="color: #222222;">Before installation, Make sure you have assigned static IP to the server.</span><br /><strong style="color: #222222;">Step 1 :</strong><span style="color: #222222;"> Issue the below command to update repository.</span><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">root@hackthesec:~$ sudo apt-get </span><span style="color: lime;">update</span></code><br /><strong style="color: #222222;">Step 2 </strong><strong style="color: #222222;">:</strong><span style="color: #222222;">  Now install <b>isc-dhcp-server</b> package and dependencies.</span><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">root@hackthesec:~$ sudo </span><span style="color: lime;">apt-get install</span><span style="color: white;"> isc-dhcp-server -y</span></code><br /><strong style="color: #222222;">Step 3 </strong><strong style="color: #222222;">:</strong><span style="color: #222222;">  After installing, open </span><strong style="color: #222222;">/etc/default/isc-dhcp-server</strong><span style="color: #222222;"> file and assign interface.</span><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">root@hackthesec:~$ sudo nano /etc/default/</span><span style="color: lime;">isc-dhcp-server</span><br /><span style="color: white;">INTERFACES="</span><span style="color: lime;">eth0</span><span style="color: white;">"</span></code><br /><strong style="color: #222222;">Step 4 </strong><strong style="color: #222222;">:</strong><span style="color: #222222;">  We need to define below values in </span><span style="color: red;"><strong>dhcpd.conf</strong> </span><span style="color: #222222;">file located in </span><strong><span style="color: red;">/etc/dhcp/ </span></strong><span style="color: #222222;">directory.</span><br /><strong><u><span style="color: #0b5394;">Example:</span></u></strong></div>
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<code style="background-color: #0e0e0e; border-radius: 5px; display: block; padding: 4px;"><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">Network : 192.168.100.0/24</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">Range : 192.168.100.20 ( Starting IP ) – 192.168.100.100 ( Ending IP )</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">Gateway : 192.168.100.1</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">Primary DNS : 192.168.100.5</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">Sec DNS : 8.8.8.8</span></span></code></code></div>
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<span style="color: #222222; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">Take backup copy before making changes to the original file .Better rename the file and create a new one .</span><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">root@hackthesec:~$ sudo mv /etc/dhcp/</span><span style="color: lime;">dhcpd</span><span style="color: white;">.conf /etc/dhcp/</span><span style="color: lime;">dhcpd.conf.org</span></code><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">root@hackthesec:~$ sudo nano </span><span style="color: lime;">/etc/dhcp/dhcpd.conf</span></code></div>
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<span style="color: #222222; font-family: Trebuchet, Trebuchet MS, Arial, Verdana, sans-serif; font-size: large;"><span style="line-height: 30px;">and add the below code after making changes as per your network values.</span></span><br />
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<code style="background-color: #0e0e0e; border-radius: 5px; display: block; padding: 4px;"><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">default-lease-time 600;</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">max-lease-time 7200;</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;"># If this DHCP server is the official DHCP server for the local</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;"># network, the authoritative directive should be uncommented.</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">authoritative;</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;"># Use this to send dhcp log messages to a different log file (you also</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;"># have to hack syslog.conf to complete the redirection).</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">log-facility local7;</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;"><br /></span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">subnet 192.168.100.0 netmask 255.255.255.0 {  #network</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;"><span class="Apple-tab-span" style="white-space: pre;"> </span>range 192.168.100.20 192.168.100.100; # Range</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;"><span class="Apple-tab-span" style="white-space: pre;"> </span>option domain-name-servers 192.168.100.5, 8.8.8.8; #Pri DNS , Sec DNS</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;"><span class="Apple-tab-span" style="white-space: pre;"> </span>option domain-name "hackthesec.co.in"; #Domain name </span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;"><span class="Apple-tab-span" style="white-space: pre;"> </span>option routers 192.168.100.1; #Gateway</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;"><span class="Apple-tab-span" style="white-space: pre;"> </span>option broadcast-address 192.168.100.255; #Broadcast</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;"><span class="Apple-tab-span" style="white-space: pre;"> </span>default-lease-time 600;</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;"><span class="Apple-tab-span" style="white-space: pre;"> </span>max-lease-time 7200;</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">}</span></span></code></code></div>
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<strong style="color: #222222;">Step 5 »</strong><span style="color: #222222;"> Now start/restart dhcp service using the below command.</span><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">root@hackthesec:~$ sudo service </span><span style="color: lime;">isc-dhcp-server restart</span></code></div>
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<u>Address Reservation</u></h3>
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Sometimes you need to reserve IP to some devices like printers, camera, linux machines etc.<br />In this case, first you need to find MAC Address of that device and define values in that particular subnet.<br />For example, Printer with <b>00:DD:HD:66:55:9B</b> MAC Address has to be assigned with 192.168.100.50 IP. For this, you need to add code like below to that subnet.</div>
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<code style="background-color: #0e0e0e; border-radius: 5px; display: block; padding: 4px;"><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: lime; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">subnet 192.168.100.0 netmask 255.255.255.0 {  #network</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">       -  -   -    -   -  </span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">       max-lease-time 7200;</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">     host printer-finance {</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">                hardware ethernet 00:DD:HD:66:55:9B; </span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">                fixed-address 192.168.100.50;</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">        }</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">       host cam-gate {</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">                hardware ethernet 00:KK:HD:44:55:22;</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">                fixed-address 192.168.100.90;</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">        }</span></span></code><code style="border-radius: 5px; display: block; padding: 4px;"><span style="color: white; font-family: Verdana, MS Sans Serif, sans-serif, serif;"><span style="font-size: 14px; line-height: 25px;">}</span></span></code></code></div>
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<span style="color: #222222;">And restart DHCP service.</span><br /><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">root@hackthesec:~$ sudo service </span><span style="color: lime;">isc-dhcp-server</span><span style="color: white;"> restart</span></code><pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; font-size: 12px; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><a href="http://www.hackthesec.co.in/" style="color: #999999; text-decoration: none;" target="_blank">Hack The Security</a>
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How to Setup DHCP server on ubuntu 14.04

Setup DHCP server on ubuntu 14.04 The Dynamic Host Configuration Protocol ( DHCP ) is a network protocol used to assign IP addres...

How to install and configure samba on centos 6

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<span style="color: #990000;"><i><u>Installing and configuring samba on centos 6</u></i></span></h1>
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<span style="background-color: white; color: #222222; font-family: "arial" , sans-serif; font-size: 16px; line-height: 19.8400001525879px;">"</span><b style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.8400001525879px;">Samba</b><span style="background-color: white; color: #222222; font-family: "arial" , sans-serif; font-size: 16px; line-height: 19.8400001525879px;">is an Open Source/Free Software suite that provides seamless file and print services to</span><b style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.8400001525879px;">SMB</b><span style="background-color: white; color: #222222; font-family: "arial" , sans-serif; font-size: 16px; line-height: 19.8400001525879px;">/CIFS clients." </span><b style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.8400001525879px;">Samba</b><span style="background-color: white; color: #222222; font-family: "arial" , sans-serif; font-size: 16px; line-height: 19.8400001525879px;"> is freely available, unlike other </span><b style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.8400001525879px;">SMB</b><span style="background-color: white; color: #222222; font-family: "arial" , sans-serif; font-size: 16px; line-height: 19.8400001525879px;">/CIFS implementations, and allows for interoperability between Linux/Unix</span><b style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 16px; line-height: 19.8400001525879px;">servers</b><span style="background-color: white; color: #222222; font-family: "arial" , sans-serif; font-size: 16px; line-height: 19.8400001525879px;"> and Windows-based clients.</span><span style="background-color: white; color: #222222; font-family: "trebuchet" , "trebuchet ms" , "arial" , "verdana" , sans-serif; font-size: 16px; line-height: 30px;"><br /></span></div>
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<span style="background-color: white; color: #222222; font-family: "arial" , sans-serif; font-size: 16px; line-height: 19.8400001525879px;"><br /></span></div>
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<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
Step 1<span style="color: #993300;"> </span> : <span style="color: #222222;"> Update yum repositories and packages by typing the below command</span></div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@localhost ~]# </span><span style="color: lime;">yum update</span></code></div>
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<span style="background-color: white; color: #993300; font-family: "trebuchet" , "trebuchet ms" , "arial" , "verdana" , sans-serif; font-size: 16px; line-height: 30px;"><br /></span></div>
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<span style="background-color: white; font-family: "trebuchet" , "trebuchet ms" , "arial" , "verdana" , sans-serif; font-size: 16px; line-height: 30px;">Step 2 </span><span style="background-color: white; font-family: "trebuchet" , "trebuchet ms" , "arial" , "verdana" , sans-serif; font-size: 16px; line-height: 30px;"> :</span><span style="background-color: white; font-family: "trebuchet" , "trebuchet ms" , "arial" , "verdana" , sans-serif; font-size: 16px; line-height: 30px;"> </span><span style="background-color: white; color: #222222; font-family: "trebuchet" , "trebuchet ms" , "arial" , "verdana" , sans-serif; font-size: 16px; line-height: 30px;"> Install samba packages along with dependencies using yum</span></div>
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<span style="color: #222222; font-family: "trebuchet" , "trebuchet ms" , "arial" , "verdana" , sans-serif;"><span style="line-height: 30px;"><br /></span></span>
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</div>
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<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@localhost ~]# yum install </span><span style="color: yellow;">samba</span></code></div>
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</h3>
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<span style="color: #0b5394;"><u>Samba configuration :</u></span></h3>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
Step 3  : <span style="color: #222222;"> Create a share username and password .</span></div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@localhost ~]# </span><span style="color: lime;">useradd</span><span style="color: white;"> shareuser -s /sbin/nologin</span></code></div>
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Now create samba password for username shareuser using smbpasswd command .</div>
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<br />
<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@localhost ~]# </span><span style="color: lime;">smbpasswd</span><span style="color: white;"> -a shareuser</span><br /><span style="color: white;">New SMB </span><span style="color: yellow;">password</span><span style="color: white;">:****</span><br /><span style="color: yellow;">Retype new SMB password:</span><span style="color: white;">****</span><br /><span style="color: lime;">Added user shareuser.</span></code></div>
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<span style="color: #993300;"><br /></span></div>
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Step 4 <span style="color: black;"> :</span><span style="color: black;"> </span><span style="color: #222222;">  Create a folder called share in the root directory .</span></div>
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<br /></div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@localhost ~]# </span><span style="color: lime;">mkdir</span><span style="color: white;"> /share</span></code></div>
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and change the ownership for the share folder</div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@localhost ~]# chown </span><span style="color: lime;">-R shareuser:root /share/</span></code></div>
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<span style="color: #993300;"><br /></span></div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
Step 5  : <span style="color: #222222;">  open the file </span><em style="color: #222222;">/etc/samba/smb.conf</em><span style="color: #222222;"> . ( Before editing the file , please copy the file to another location for backup ) . Add the below lines at the bottom of the file .</span><br />
<code style="background-color: #0e0e0e; border-radius: 5px; color: white; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><br />[share]<br />comment = Share<br />path = /share<br />writable = yes<br />valid users = shareuser</code></div>
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<span style="color: #993300;"><br /></span></div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
Step 6 : start samba service</div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@localhost ~]# service </span><span style="color: lime;">smb</span><span style="color: white;"> start</span></code></div>
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<br /></div>
<div style="background-color: white; color: #222222; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
and type this below command to start samba service automatically while booting.</div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@localhost ~]# </span><span style="color: lime;">chkconfig</span><span style="color: white;"> --levels 235 smb on</span></code></div>
<h3 style="background-color: white; color: #0f4884; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 18px; font-weight: normal; height: auto; line-height: 28px; margin: 0px; padding: 0px; width: 614px;">
</h3>
<h3 style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 18px; font-weight: normal; height: auto; line-height: 28px; margin: 0px; padding: 0px; width: 614px;">
<span style="color: #0b5394;"><u>Samba testing :</u></span></h3>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
Step 7<span style="color: #993300;"> </span><span style="color: black;"> :</span><span style="color: black;"> </span><span style="color: #222222;"> You can check  your configuration by using testparm command</span></div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">[root@localhost ~]# </span><span style="color: lime;">testparm</span><br /><span style="color: white;">Load smb config files from /etc/samba/smb.conf</span><br /><span style="color: white;">rlimit_max: increasing </span><span style="color: lime;">rlimit_max (1024) to minimum Windows limit (16384)</span><br /><span style="color: white;">Processing section "[homes]"</span><br /><span style="color: white;">Processing section "[printers]"</span><br /><span style="color: white;">Processing section "[share]"</span><br /><span style="color: lime;">Loaded services file OK.</span><span style="color: white;">Server role: ROLE_STANDALONE</span><br /><span style="color: white;">Press enter to see a dump of your service definitions</span></code><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;"><br />[</span><span style="color: lime;">global</span><span style="color: white;">]</span><br /><span style="color: white;">workgroup = MYGROUP</span><br /><span style="color: white;">server string = Samba Server Version %v</span><br /><span style="color: white;">log file = /var/log/samba/log.%m</span><br /><span style="color: white;">max log size = 50</span><br /><span style="color: white;">cups options = raw</span></code><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;"><br />[</span><span style="color: lime;">homes</span><span style="color: white;">]</span><br /><span style="color: white;">comment = Home Directories</span><br /><span style="color: white;">read only = No</span><br /><span style="color: white;">browseable = No</span><br /><span style="color: white;">[printers]</span><br /><span style="color: white;">comment = All Printers</span><br /><span style="color: white;">path = /var/spool/samba</span><br /><span style="color: white;">printable = Yes</span><br /><span style="color: white;">browseable = No</span></code><code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;"><br />[</span><span style="color: lime;">share</span><span style="color: white;">]</span><br /><span style="color: white;">comment = Share</span><br /><span style="color: white;">path = /share</span><br /><span style="color: white;">valid users = </span><span style="color: lime;">shareuser</span><br /><span style="color: white;">read only = No</span></code></div>
<div style="background-color: white; color: #222222; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<br /></div>
<div style="background-color: white; color: #222222; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
You can see your share sections. Here by default home folders of users will be displayed . you can comment the unwanted section using “;” symbol .</div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<span style="color: #222222;">For example . you can comment homes section as below and restart the service using  “</span><span style="color: red;"><b>service smb restart</b></span><span style="color: #222222;">”</span></div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<code style="background-color: #0e0e0e; border-radius: 5px; display: block; font-family: Verdana, 'MS Sans Serif', sans-serif, serif; font-size: 14px; line-height: 25px; padding: 4px;"><span style="color: white;">;[homes]<br />;</span><span style="color: lime;">comment</span><span style="color: white;"> = Home Directories</span><br /><span style="color: white;">;read only = No</span><br /><span style="color: white;">;browseable = No</span></code></div>
<div style="background-color: white; color: #222222; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<br /></div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<span style="color: #222222;">Now you can access share folder on windows machine by typing </span><span style="color: red;">\samba-server-ip</span><span style="color: #222222;"> on run prompt . you can see your share folder after entering username and password.</span></div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<span style="color: #222222;">Example - \\192.168.2.251</span></div>
<div style="background-color: white; font-family: Trebuchet, 'Trebuchet MS', Arial, Verdana, sans-serif; font-size: 16px; line-height: 30px;">
<span style="color: #222222;"></span><br />
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