Hack The Sec-Leading Resource Of Linux Tutorial: Centos

Setting Up a Port Forwarding Using Uncomplicated Firewall(UFW)

Setting Up a Port Forwarding Using Uncomplicated Firewall(UFW)The Linux kernel in Ubuntu provides a packet filtering system called netfilter, and the traditional interface for manipulating netfilter are the iptables suite of commands. iptables provide a complete firewall solution that is both highly configurable and highly flexible.<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnwJqO5t-cjYlTKJwDUOWpBE6hpcStrXARypGodCji4qUFUgtg2ocsVUHZGm_VaZJARKMRjmnlgIDhOUHWEO5wTG0-oclNxRCZpvAiHMjuATmAULsaXKwqEUTKSxNrB7g385tyZmzbc_ZT/s577/firewall_www.hackthesec.co.in.jpg" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" data-original-height="359" data-original-width="577" height="199" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnwJqO5t-cjYlTKJwDUOWpBE6hpcStrXARypGodCji4qUFUgtg2ocsVUHZGm_VaZJARKMRjmnlgIDhOUHWEO5wTG0-oclNxRCZpvAiHMjuATmAULsaXKwqEUTKSxNrB7g385tyZmzbc_ZT/s320/firewall_www.hackthesec.co.in.jpg" width="320" /></a></div> Becoming proficient in iptables takes time, and getting started with netfilter firewalling using only iptables can be a daunting task. As a result, many frontends for iptables have been created over the years, each trying to achieve a different result and targeting a different audience.The Uncomplicated Firewall (ufw) is a frontend for iptables and is particularly well-suited for host-based firewalls. ufw provides a framework for managing netfilter, as well as a command-line interface for manipulating the firewall. ufw aims to provide an easy to use interface for people unfamiliar with firewall concepts, while at the same time simplifies complicated iptables commands to help an administrator who knows what he or she is doing. ufw is an upstream for other distributions and graphical frontends.Setting Up a Port ForwardWe are going to forward incoming traffic on the port 8000 to 8081Enabling UFW: If not already enabled, start by enabling UFW. Run the following command in the terminal:<pre class="language-markup" style="background: rgb(39, 40, 34); border-radius: 0.3em; box-sizing: border-box; color: #f8f8f2; direction: ltr; font-family: Consolas, Monaco, "Andale Mono", monospace; font-size: 15.36px; hyphens: none; line-height: 1.2; margin-bottom: 20px; margin-top: 0px; max-width: 100%; overflow: auto; padding: 10px; tab-size: 4; text-shadow: rgba(0, 0, 0, 0.3) 0px 1px; word-break: normal;"><code class="language-markup" style="box-sizing: border-box; direction: ltr; font-family: Consolas, Monaco, "Andale Mono", monospace; font-size: 14.7456px; hyphens: none; line-height: 1.2; tab-size: 4; text-shadow: rgba(0, 0, 0, 0.3) 0px 1px; word-break: normal; word-spacing: normal;">[<a class="token email-link" href="https://www.hackthesec.co.in/2023/02/root@hackthesec" style="background-color: transparent; box-sizing: border-box; color: #007abe; text-decoration-line: none;">root@hackthesec</a> ~]# sudo ufw enable</code></pre>Open the UFW configuration file: To set up port forwarding, you must edit the UFW configuration file, located at /etc/default/ufw.    We mostly proffered Nano editor  <pre class="language-markup" style="background: rgb(39, 40, 34); border-radius: 0.3em; box-sizing: border-box; color: #f8f8f2; direction: ltr; font-family: Consolas, Monaco, "Andale Mono", monospace; font-size: 15.36px; hyphens: none; line-height: 1.2; margin-bottom: 20px; margin-top: 0px; max-width: 100%; overflow: auto; padding: 10px; tab-size: 4; text-shadow: rgba(0, 0, 0, 0.3) 0px 1px; word-break: normal;"><code class="language-markup" style="box-sizing: border-box; direction: ltr; font-family: Consolas, Monaco, "Andale Mono", monospace; font-size: 14.7456px; hyphens: none; line-height: 1.2; tab-size: 4; text-shadow: rgba(0, 0, 0, 0.3) 0px 1px; word-break: normal; word-spacing: normal;">[<a class="token email-link" href="https://www.hackthesec.co.in/2023/02/root@hackthesec" style="background-color: transparent; box-sizing: border-box; color: #007abe; text-decoration-line: none;">root@hackthesec</a> ~]# sudo nano /etc/default/ufw</code></pre>Enable packet forwarding: In the UFW configuration file, find the line that says DEFAULT_FORWARD_POLICY="DROP" Change DROP to ACCEPT so it looks like this: DEFAULT_FORWARD_POLICY="ACCEPT" This change allows UFW to forward packets, which is necessary for port forwarding.<pre class="language-markup" style="background: rgb(39, 40, 34); border-radius: 0.3em; box-sizing: border-box; color: #f8f8f2; direction: ltr; font-family: Consolas, Monaco, "Andale Mono", monospace; font-size: 15.36px; hyphens: none; line-height: 1.2; margin-bottom: 20px; margin-top: 0px; max-width: 100%; overflow: auto; padding: 10px; tab-size: 4; text-shadow: rgba(0, 0, 0, 0.3) 0px 1px; word-break: normal;"><code class="language-markup" style="box-sizing: border-box; direction: ltr; font-family: Consolas, Monaco, "Andale Mono", monospace; font-size: 14.7456px; hyphens: none; line-height: 1.2; tab-size: 4; text-shadow: rgba(0, 0, 0, 0.3) 0px 1px; word-break: normal; word-spacing: normal;">[<a class="token email-link" href="https://www.hackthesec.co.in/2023/02/root@hackthesec" style="background-color: transparent; box-sizing: border-box; color: #007abe; text-decoration-line: none;">root@hackthesec</a> ~]# DEFAULT_FORWARD_POLICY="ACCEPT"</code></pre>Press Ctrl+O to save the changes, then Ctrl+X to exit nano.Modify UFW’s before rules: UFW uses a set of "before rules" that are executed before the standard rules. These before rules can be used to set up port forwarding. <pre class="language-markup" style="background: rgb(39, 40, 34); border-radius: 0.3em; box-sizing: border-box; color: #f8f8f2; direction: ltr; font-family: Consolas, Monaco, "Andale Mono", monospace; font-size: 15.36px; hyphens: none; line-height: 1.2; margin-bottom: 20px; margin-top: 0px; max-width: 100%; overflow: auto; padding: 10px; tab-size: 4; text-shadow: rgba(0, 0, 0, 0.3) 0px 1px; word-break: normal;"><code class="language-markup" style="box-sizing: border-box; direction: ltr; font-family: Consolas, Monaco, "Andale Mono", monospace; font-size: 14.7456px; hyphens: none; line-height: 1.2; tab-size: 4; text-shadow: rgba(0, 0, 0, 0.3) 0px 1px; word-break: normal; word-spacing: normal;">[<a class="token email-link" href="https://www.hackthesec.co.in/2023/02/root@hackthesec" style="background-color: transparent; box-sizing: border-box; color: #007abe; text-decoration-line: none;">root@hackthesec</a> ~]# sudo nano /etc/ufw/before.rules </code></pre>Add the following lines at the end of the file, replacing <your-ip> with the IP address of the machine where the packets will be forwarded:<pre class="language-markup" style="background: rgb(39, 40, 34); border-radius: 0.3em; box-sizing: border-box; direction: ltr; hyphens: none; line-height: 1.2; margin-bottom: 20px; margin-top: 0px; max-width: 100%; overflow: auto; padding: 10px; tab-size: 4; text-shadow: rgba(0, 0, 0, 0.3) 0px 1px; word-break: normal;"># NAT table rules
*nat
:POSTROUTING ACCEPT [0:0]
 
# Forward traffic from port 8000 to port 8081.
-A PREROUTING -p tcp --dport 8000 -j DNAT --to-destination <your-ip>:8081
 
# Don’t masquerade local traffic.
-A POSTROUTING -s 192.168.1.0/24 -j MASQUERADE
 
COMMIT</pre>Press Ctrl+O to save the changes, then Ctrl+X to exit nano.Restart UFW: Finally, for the changes to take effects<pre class="language-markup" style="background: rgb(39, 40, 34); border-radius: 0.3em; box-sizing: border-box; color: #f8f8f2; direction: ltr; font-family: Consolas, Monaco, "Andale Mono", monospace; font-size: 15.36px; hyphens: none; line-height: 1.2; margin-bottom: 20px; margin-top: 0px; max-width: 100%; overflow: auto; padding: 10px; tab-size: 4; text-shadow: rgba(0, 0, 0, 0.3) 0px 1px; word-break: normal;"><code class="language-markup" style="box-sizing: border-box; direction: ltr; font-family: Consolas, Monaco, "Andale Mono", monospace; font-size: 14.7456px; hyphens: none; line-height: 1.2; tab-size: 4; text-shadow: rgba(0, 0, 0, 0.3) 0px 1px; word-break: normal; word-spacing: normal;">[<a class="token email-link" href="https://www.hackthesec.co.in/2023/02/root@hackthesec" style="background-color: transparent; box-sizing: border-box; color: #007abe; text-decoration-line: none;">root@hackthesec</a> ~]# sudo ufw disable 
[<a class="token email-link" href="https://www.hackthesec.co.in/2023/02/root@hackthesec" style="background-color: transparent; box-sizing: border-box; color: #007abe; text-decoration-line: none; word-spacing: normal;">root@hackthesec</a> ~]# sudo ufw enable </code></pre> @hackthesecurity

Setting Up a Port Forwarding Using Uncomplicated Firewall(UFW)

Setting Up a Port Forwarding Using Uncomplicated Firewall(UFW) The Linux kernel in Ubuntu provides a packet filtering system called netfilte...

How to find files containing specific text in Linux

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Find files containing specific text in Linux</div>
 
Find files containing specific text using grep command 
grep is a command-line utility for searching plain-text data sets for lines that match a regular expression. Its name comes from the ed command g/re/p (globally search a regular expression and print), which has the same effect: doing a global search with the regular expression and printing all matching lines. Grep was originally developed for the Unix operating system, but later available for all Unix-like systems. 
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgmSfa5gfpg7IHq5mo4T7SHu_Cl3baveLg-xsoRu3kxODgKyT2LN2J7nwZThgySbn7tR5rogvXIbYnjg4nDea8sLQazM9oEpGHniruu0_fTDG58SasIVf0NZWEmjyQ9w9UtlcmquEhNQRA/s1600/find-command-in-linux-hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="256" data-original-width="512" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgmSfa5gfpg7IHq5mo4T7SHu_Cl3baveLg-xsoRu3kxODgKyT2LN2J7nwZThgySbn7tR5rogvXIbYnjg4nDea8sLQazM9oEpGHniruu0_fTDG58SasIVf0NZWEmjyQ9w9UtlcmquEhNQRA/s1600/find-command-in-linux-hackthesec.co.in.png" /></a></div>
 
grep command syntax 
 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">grep "text string to search” directory-path</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">grep [option] "text string to search” directory-path</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">grep -r "text string to search” directory-path</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">grep -r -H "text string to search” directory-path</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">egrep -R "word-1|word-2” directory-path</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">egrep -w -R "word-1|word-2” directory-path</pre>
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Find files containing specific text using grep command examples</div>
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In this example, we will search for 'PULSEAUDIO_SYSTEM_START' in all configuration files located in /etc directory.</div>
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Now there's a small problem, depending on your Linux distro, Find command Syntax can be slightly different.</div>
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*If you know the exact location and directory you're after, then use</div>
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<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">root@hackthesec:~# grep "PULSEAUDIO_SYSTEM_START" /etc/default/pulseaudio 
PULSEAUDIO_SYSTEM_START=1
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*If you know the exact directory with the files containing that specific text, then use</div>
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<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">root@hackthesec:~# grep "PULSEAUDIO_SYSTEM_START" /etc/default/*
grep: /etc/default/kdm.d: Is a directory
/etc/default/pulseaudio:PULSEAUDIO_SYSTEM_START=1
root@hackthesec:~#
</pre>
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If you don't know the exact location of the file that contains the specific text you’re looking for, then you need to search all sub-directories recursively.</div>
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<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">root@hackthesec:~# grep -r "PULSEAUDIO_SYSTEM_START" /etc/default/*
/etc/default/pulseaudio:PULSEAUDIO_SYSTEM_START=1
root@hackthesec:~#</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">root@hackthesec:~# grep -R "PULSEAUDIO_SYSTEM_START" /etc/default/*
/etc/default/pulseaudio:PULSEAUDIO_SYSTEM_START=1
root@hackthesec:~#</pre>
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Now what if you are searching through a massive file and there might be many outputs similar to what you’re looking for.. you might want to use --col flag to color code your output which searching files containing specific strings.</div>
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<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">root@hackthesec:~# grep --col 'usb 1-1.4' /var/log/messages
Apr 4 09:14:25 kali kernel: [1191164.780496] usb 1-1.4: new low-speed USB device number 21 using ehci-pci
root@hackthesec:~#</pre>
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Now I want to display all files with colorer output with containing specific text and instead of showing the whole content of the files</div>
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<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">root@hackthesec:~# grep --col -r 'Linux version 3.14-kali1' /var/log/* | cut -d: -f1
/var/log/dmesg
/var/log/dmesg.0
/var/log/installer/syslog
root@hackthesec:~#</pre>
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When you're using grep, depending on the commands used and permission you have on the system, you might see any of the following errors.</div>
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* Input/output error</div>
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* recursive directory loop</div>
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* No such file or directory</div>
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* No such device or address</div>
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* Permission denied</div>
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If you want to hide all errors or warning message spamming your output window(specifically useful when you're trying to use grep on a script) generated by the grep command, append 2>/dev/null to grep command. This will send and hide unwanted output to /dev/null device:</div>
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<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">root@hackthesec:~# grep -R "PULSEAUDIO_SYSTEM_START" /etc/* 2>/dev/null 
/etc/default/pulseaudio:PULSEAUDIO_SYSTEM_START=1
/etc/init.d/pulseaudio:PULSEAUDIO_SYSTEM_START=0
/etc/init.d/pulseaudio:if [ "$PULSEAUDIO_SYSTEM_START" != "1" ]; then
/etc/rc0.d/K01pulseaudio:PULSEAUDIO_SYSTEM_START=0
/etc/rc0.d/K01pulseaudio:if [ "$PULSEAUDIO_SYSTEM_START" != "1" ]; then
/etc/rc1.d/K01pulseaudio:PULSEAUDIO_SYSTEM_START=0
/etc/rc1.d/K01pulseaudio:if [ "$PULSEAUDIO_SYSTEM_START" != "1" ]; then
/etc/rc2.d/S20pulseaudio:PULSEAUDIO_SYSTEM_START=0
/etc/rc2.d/S20pulseaudio:if [ "$PULSEAUDIO_SYSTEM_START" != "1" ]; then
/etc/rc3.d/S20pulseaudio:PULSEAUDIO_SYSTEM_START=0
/etc/rc3.d/S20pulseaudio:if [ "$PULSEAUDIO_SYSTEM_START" != "1" ]; then
/etc/rc4.d/S20pulseaudio:PULSEAUDIO_SYSTEM_START=0
/etc/rc4.d/S20pulseaudio:if [ "$PULSEAUDIO_SYSTEM_START" != "1" ]; then
/etc/rc5.d/S20pulseaudio:PULSEAUDIO_SYSTEM_START=0
/etc/rc5.d/S20pulseaudio:if [ "$PULSEAUDIO_SYSTEM_START" != "1" ]; then
/etc/rc6.d/K01pulseaudio:PULSEAUDIO_SYSTEM_START=0
/etc/rc6.d/K01pulseaudio:if [ "$PULSEAUDIO_SYSTEM_START" != "1" ]; then
root@hackthesec:~#</pre>
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What if you're not sure about the case of the text you're after? You can use -i to ignore case.</div>
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Below example shows the difference between -i flag. First command didn’t find the text, second command did as we used -i flag to ignore case.</div>
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<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">root@hackthesec:~# grep -r "pulseaudio_system_start" /etc/default/*
root@hackthesec:~# 
root@hackthesec:~# grep -i -r "pulseaudio_system_start" /etc/default/*
/etc/default/pulseaudio:PULSEAUDIO_SYSTEM_START=1
root@hackthesec:~#</pre>
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I always prefer using grep command with -r and --col flag in Debian Linux as -r complains less about permissions, files, directory etc. and of course some color helps on the eyes when you’re browsing through many lines.</div>
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<a href="http://www.hackthesec.co.in/">HackTheSec</a></div>
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How to find files containing specific text in Linux

Find files containing specific text in Linux Find files containing specific text using grep command grep is a command-line utility for ...

Cryptmount – A Utility to Create Encrypted Filesystems in Linux

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cryptmount is a utility for GNU/Linux operating systems which allows an ordinary user to mount an encrypted filing system without requiring superuser privileges. It is aimed at Linux systems using the 2.6 kernel series or later. 
 
 
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Technical background 
 
There are currently two main approaches to using encrypted filesystems within the linux kernel: 
 
<ul style="text-align: left;">
<li>the cryptoloop device driver;</li>
<li>the device-mapper system, using the dm-crypt target.</li>
</ul>
 
The (older) cryptoloop system has grown in parallel with the loopback device-driver of 2.4 kernel series, but has now been superseded by the device-mapper capabilities of the 2.6 kernel series. The newer devmapper system offers a <a href="http://docs.linux.com/article.pl?sid=04/06/07/2036205&tid=72&tid=14&tid=35">cleaner organization</a> of encryption and device-access, and superior performance has <a href="http://deb.riseup.net/storage/encryption/dmcrypt">been noted</a>. Alternative user-space tools which allow individual files to be encrypted are also widely available, but allow some information about file sizes & organization to be exposed. 
 
With the older cryptoloop system, it was possible to describe all the details of an encrypted filesystem within /etc/fstab so that it could be configured completely by 'mount'. This meant that it was particularly easy to give any user permission to mount those encrypted filesystems simply by providing the 'user' option within /etc/fstab. 
 
With the newer device-mapper infrastructure, there are more stages involved in mounting an encrypted filing system, and neither does 'mount' currently allow this nor does the syntax of /etc/fstab lend itself to describing all the necessary filesystem parameters. This is especially so if the filesystem is stored in an ordinary file, which would require separate configuration of a loopback device and a devmapper target before the filesystem could be accessed. 
 
cryptmount was written to make it as easy for ordinary users to access encrypted filesystems on-demand using the newer devmapper mechansism as it was to use the older, now deprecated, cryptoloop methods. This offers the following advantages: 
 
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<li>access to improved functionality in the kernel</li>
<li>transparent support for filesystems stored on either raw disk partitions or loopback files</li>
<li></li>
<li style="font-size: 15px;">separate encryption of filesystem access keys, allowing access passwords to be changed without re-encrypting the entire filesystem</li>
<li>storing multiple encrypted filesystems within a single disk partition, using a designated subset of blocks for each</li>
<li>rarely used filesystems do not need to be mounted at system startup</li>
<li>un-mounting of each filesystem is locked so that this can only be performed by the user that mounted it, or the superuser</li>
<li>encrypted filesystems compatible with cryptsetup</li>
<li>encrypted access-keys can be chosen to be compatible with openssl, or managed via libgcrypt, or (for 2.0 release-series) built-in SHA1/Blowfish ciphers</li>
<li>support for encrypted swap partitions (superuser only)</li>
<li>support for setting up encrypted filesystems or crypto-swap at system boot-up</li>
</ul>
Install and Configure Cryptmount in Linux 
 
On Debian/Ubuntu distributions, you can install Cryptmount using the following command line 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">sudo apt install cryptmount</pre>
On RHEL/CentOS/Fedora distributions,install it from source. First start installing the required package(s) to successfully build and use cryptmount. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">yum install device-mapper-devel</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">yum groupinstall "Development tools"</pre>
Then download the latest Cryptmount source files. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">wget https://downloads.sourceforge.net/project/cryptmount/cryptmount/cryptmount-5.2/cryptmount-5.2.4.tar.gz
tar -xzf cryptmount-5.2.4.tar.gz
cd cryptmount-5.2.4
./configure
make
make instal</pre>
 
After installation go for setup using bellow command line 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">cryptmount-setup</pre>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4_bf_zluIl3w2Tpa7Kj-r9HtLoen_02EXBU0bh0fZCpA9sXzYivNF0EIGcs7tNx4I95ID2E9k3NkajvFnLo8BGvbCj5ovWxGdVFnPo6EqmrnqtPihRHc-53-IqMBlBufcKWY8yQPfXWmF/s1600/crypt.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="729" data-original-width="872" height="534" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4_bf_zluIl3w2Tpa7Kj-r9HtLoen_02EXBU0bh0fZCpA9sXzYivNF0EIGcs7tNx4I95ID2E9k3NkajvFnLo8BGvbCj5ovWxGdVFnPo6EqmrnqtPihRHc-53-IqMBlBufcKWY8yQPfXWmF/s640/crypt.png" width="640" /></a></div>
 
Once the new encrypted filesystem is created, you can access it as follows (enter the name you specified for your target – hackthesec), you will be prompted to enter the password for the target. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">cryptmount hackthesec
cd /home/crypt</pre>
To unmount the target run cd command to get out of the encrypted filesystem, then use the -u switch to unmount as shown. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">cryptmount -u hackthesec</pre>
For more information you can use bellow command or you can visit cryptmount website  
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">man cryptmount
man cmtab </pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">Website - <a href="http://cryptmount.sourceforge.net/">http://cryptmount.sourceforge.net/</a></pre>
 
Troubleshooting in my case 
 
After installation i just received a error message from my ubuntu box 
"Taking backup of cryptmount master config-file (@ETCDIR@/cmtab.bckp-setup)...mv: cannot stat '@ETCDIR@/cmtab': No such file or directory" 
 
for this error just follow bellow commands  
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">root@new:~# which cryptmount-setup
/usr/sbin/cryptmount-setup
</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">root@new:~# vi /usr/sbin/cryptmount-setup</pre>
<div>
 </div>
and 
 
Changed from:  
CM_CFGDIR="@ETCDIR@"  
 
Changed to:  
 
CM_CFGDIR="/etc/cryptmount"

Cryptmount – A Utility to Create Encrypted Filesystems in Linux

cryptmount is a utility for GNU/Linux operating systems which allows an ordinary user to mount an encrypted filing system without requiring...

How to Install Go 1.7 on Ubuntu 16.04 / 14.04 / CentOS 7 / Fedora 24

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Install Go 1.7 on Ubuntu 16.04 / 14.04 / CentOS 7 / Fedora 24 
 
Go (often referred to as golang) is a free and open source programming language created at Google in 2007 by Robert Griesemer, Rob Pike, and Ken Thompson. It is a compiled, statically typed language in the tradition of Algol and C, with garbage collection, limited structural typing, memory safety features and CSP-style concurrent programming features added. 
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBBvny9pyLCA-DGCTjvXwcsfTDyRGFmfSw3muCt-XMd3aEDl_ZXEUtltnvg2NFm9Y73eB_VOu_bmnO9GbFQp1pDoWLHLQ9gK6WUEI0B-_fkqUzvIseI95633MHVY_ictfMUMH1434iFeEV/s1600/appenginegophercolor.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBBvny9pyLCA-DGCTjvXwcsfTDyRGFmfSw3muCt-XMd3aEDl_ZXEUtltnvg2NFm9Y73eB_VOu_bmnO9GbFQp1pDoWLHLQ9gK6WUEI0B-_fkqUzvIseI95633MHVY_ictfMUMH1434iFeEV/s1600/appenginegophercolor.jpg" /></a></div>
 
The language was announced in November 2009; it is used in some of Google's production systems,as well as by other firms. Two major implementations exist: Google's Go compiler, "gc", is developed as open source software and targets various platforms including Linux, OS X, Windows, various BSD and Unix versions, and since 2015 also mobile devices, including smartphones.A second compiler, gccgo, is a GCC frontend. The "gc" toolchain is self-hosting since version 1.7 
 
Download and Install Go Language: 
Switch to the root user. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$ su -

### Ubuntu 16.04 / 14.04 ###

# apt-get update
# apt-get -y upgrade

### CentOS / RHEL / Fedora ###

# yum -y update
</pre>
Download the Go language binary package using the following command. Alternatively, you can visit <a href="https://golang.org/dl/">Go Language download</a> page to download the latest version of Go. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># wget https://storage.googleapis.com/golang/go1.7.1.linux-amd64.tar.gz</pre>
Extract the archive and move it to /usr/local. You can also place the Go lang binary to your custom location instead of /usr/local. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># tar -zxvf go1.7.1.linux-amd64.tar.gz -C /usr/local/</pre>
Setup Go Environment variables: 
 
 
Setup two important variables for Go, GOROOT (PATH) and GOPATH. Add /usr/local/go/bin to your path variable.run below command (temporary) or place the following command in /etc/profile or $HOME/.profile file for persistent across sessions. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">export PATH=$PATH:/usr/local/go/bin</pre>
For Go custom location replace /usr/local/go/bin/ with /path/to/bin/ directory. 
 
 
GOPATH is a Go environment variable for your project workspace. Create a workspace directory called "projectwork" in your home directory. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">mkdir $HOME/projectwork</pre>
Set GOPATH variable run below command (temporary) or place the following command in /etc/profile or $HOME/.profile file for persistent across sessions. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">export GOPATH=$HOME/projectwork</pre>
Verify Go Installation: 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># go version
go version go1.7.1 linux/amd64</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># go env

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/root/projectwork"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0"
CXX="g++"
CGO_ENABLED="1"</pre>
Create your first project: 
The workspace called "projectwork" located in $HOME directory. I am a root user, in my case "/root/projectwork" is my workspace. goto your workspace using below command 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># cd $GOPATH
or
# cd $HOME/work</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># mkdir -p src/hello</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># vi src/hello/hello.go</pre>
and place the following content in the hello.go file. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">package main

import "fmt"

func main() {
 fmt.Printf("Welcome To hackthesec\n")
}</pre>
Compile it with go command. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># go install hello</pre>
go command will put an executable command (hello) inside the bin directory of your workspace. Execute the executable using the following command. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># $GOPATH/bin/hello</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">Welcome To hackthesec</pre>
Thanks for reading.. 
<a href="http://www.hackthesec.co.in/">www.hackthesec.co.in</a> 
 </div>

How to Install Go 1.7 on Ubuntu 16.04 / 14.04 / CentOS 7 / Fedora 24

Install Go 1.7 on Ubuntu 16.04 / 14.04 / CentOS 7 / Fedora 24 Go (often referred to as golang) is a free and open source programming lang...

How to Install and Configure phpLDAPAdmin on CentOS 7 / Ubuntu 16.04

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<div style="text-align: center;">
Install and Configure phpLDAPAdmin on Linux</div>
<div style="text-align: center;">
 </div>
phpLDAPadmin is a web application for administering Lightweight Directory Access Protocol (LDAP) servers.It's written in the PHP programming language, and is licensed  
 
under the GNU General Public License. The application is available in 14 languagesand supports UTF-8 encoded directory strings. 
 
<a href="http://www.hackthesec.co.in/2016/11/how-to-migrate-local-users-to-ldap.html" itemprop="url" style="background-color: white; display: block; font-family: "Open Sans", serif, sans-serif; font-weight: 600; text-decoration: none;">How to migrate local users to LDAP accounts</a>

On CentOS / RHEL: 
 
 
phpLDAPAdmin is not available in the main repository, so you need to enable <a href="http://www.hackthesec.co.in/2016/01/how-to-install-epel-repo-on-centos-and.html">EPEL repository for Redhat</a> based derivatives. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">### For RHEL 7 ###

# rpm -ivh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

### For CentOS 7 ###

# yum -y install epel-release</pre>
Install phpLDAPAdmin: 
<div style="clear: both; margin: 10px 0;">
<center>
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</div>
Install phpLDAPAdmin using "yum" on CentOS and "apt-get" on Ubuntu. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">### CentOS 7 / RHEL 7 ###

# yum install -y phpldapadmin

### Ubuntu 16.04 ###

$ sudo apt-get update
$ sudo apt-get install -y phpldapadmin</pre>
Configure Apache virtual host on CentOS 7 / RHEL 7: 
 
Default phpLDAPAdmin web config file in /etc/httpd/conf.d directory, it has rules and access permission. phpLDAPAdmin can be accessed only from the localhost (127.0.0.1) check the bellow settings. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># vi /etc/httpd/conf.d/phpldapadmin.conf</pre>
Update the configuration file shown like below.  
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">Alias /phpldapadmin /usr/share/phpldapadmin/htdocs
Alias /ldapadmin /usr/share/phpldapadmin/htdocs

usr/share/phpldapadmin/htdocs>
 <IfModule mod_authz_core.c>
 # Apache 2.4
 # Require local
 Require all granted
 IfModule>
 <IfModule !mod_authz_core.c>
 # Apache 2.2
 Order Deny,Allow
 Deny from all
 Allow from 127.0.0.1
 Allow from ::1
 </IfModule>
</Directory></pre>
Start the apache service in CentOS 7 / RHEL 7. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># systemctl restart httpd.service</pre>
Configure the FirewallD to allow external machines to access the dashboard (CentOS / RHEL). 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># firewall-cmd --permanent --zone=public --add-service=http
# firewall-cmd --reload</pre>
Configure phpLDAPAdmin: 
<div style="clear: both; margin: 10px 0;">
<center>
<script async="" src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>

<ins class="adsbygoogle" data-ad-client="ca-pub-5744890361111211" data-ad-slot="1658755283" style="display: inline-block; height: 15px; width: 728px;"></ins></center>
</div>
phpLDAPadmin by modifying some of its configuration values. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">### CentOS 7 / RHEL 7 ###

# vi /etc/phpldapadmin/config.php

### Ubuntu 16.04 ###

$ sudo nano /etc/phpldapadmin/config.php</pre>
A handy name that will appear in the left tree viewer and throughout phpLDAPadmin to identify this LDAP server to users. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$servers->setValue('server','name','HackTheSec Local LDAP Server');</pre>
If you are planning to manage the LDAP server other than localhost then you can modify the below parameter. (Optional) 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$servers->setValue('server','host','127.0.0.1');</pre>
To connect to the LDAP server which listens on the non-standard port. (Optional) 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$servers->setValue('server','port',389);</pre>
Array of base domain names of your LDAP server. ( Must be set in Ubuntu 16.04) 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$servers->setValue('server','base',array('dc=hackthesec,dc=local'));</pre>
On CentOS 7 / RHEL 7: 
 
Uncomment the line 397 and comment out the 398, like below. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$servers->setValue('login','attr','dn');
// $servers->setValue('login','attr','uid');</pre>
If you have SELinux enabled on CentOS 7 / RHEL 7 then run this command. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># setsebool -P httpd_can_connect_ldap on</pre>
Access phpLDAPAdmin: 
 
Open up the web browser and navigate it to the following URL. 
http://your-ip-add-ress/phpldapadmin 
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgC4H8H_DLb4Dyi-bXqjSL_veED94b5UY1xEBUIxIukoKxr8EseQ1Au9cgKdVHXb8OCyT66b5eGIqh2geQkEDvt_BEHCWoMgVeHRjkpl6VQJte7BronBi7aF3MyWpPysTJsax-flqu-9_pn/s1600/xConfigure-phpLDAPAdmin-on-CentOS-7.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgC4H8H_DLb4Dyi-bXqjSL_veED94b5UY1xEBUIxIukoKxr8EseQ1Au9cgKdVHXb8OCyT66b5eGIqh2geQkEDvt_BEHCWoMgVeHRjkpl6VQJte7BronBi7aF3MyWpPysTJsax-flqu-9_pn/s1600/xConfigure-phpLDAPAdmin-on-CentOS-7.jpg" /></a></div>
Click on the "login" link that is visible on the left-hand side of the page. You will be taken to the login page, log in using the LDAP root (ldapadm) account in the form of "cn=ldapadm,dc=hackthesec,dc=local". 
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjzDHfhjd21ThBzLktS38edIbS5plu0X9viwsIy1xxjmmfO4nzjkSx2BIVG8rQtogqCMvvOhpEBQP42DJ1ByYMAzHnu5vRaRzqGc1s8lJZRuI_39EVv-RkzDe7BtsxvM_pQXOST07Xn8FBF/s1600/phpLDAPAdmin-Login.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjzDHfhjd21ThBzLktS38edIbS5plu0X9viwsIy1xxjmmfO4nzjkSx2BIVG8rQtogqCMvvOhpEBQP42DJ1ByYMAzHnu5vRaRzqGc1s8lJZRuI_39EVv-RkzDe7BtsxvM_pQXOST07Xn8FBF/s1600/phpLDAPAdmin-Login.jpg" /></a></div>
If you have below values set in /etc/phpldapadmin/config.php file then the Login DN: will be automatically pre-populated. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$servers->setValue('login','bind_id','cn=ldapadm,dc=hackthesec,dc=local');</pre>
Now you can start managing your LDAP server via phpLDAPAdmin. 
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Thanks for watching ... 
<a href="http://www.hackthesec.co.in/">www.hackthesec.co.in</a></div>

How to Install and Configure phpLDAPAdmin on CentOS 7 / Ubuntu 16.04

Install and Configure phpLDAPAdmin on Linux phpLDAPadmin is a web application for administering Lightweight Directory Access Protocol (...

How to Install Microsoft SQL Server (MS SQL) on RHEL (CentOS) / Ubuntu

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Install Microsoft SQL Server (MS SQL) on RHEL (CentOS) / Ubuntu 
 
<a href="https://www.microsoft.com/en-us/sql-server/sql-server-vnext-including-Linux">Microsoft has released SQL Server for Redhat Enterprise Linux and Ubuntu</a>; you can now start testing this latest preview of SQL Server in your environment. 
 
This version is still in preview; it is meant for testing and development purpose only. Try it on your own. 
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Supported Operating Systems: 
 
Redhat Enterprise Linux 7.2 
Ubuntu 16.04 
 
 
Setup Repository: 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">### Ubuntu 16.04 ###

$ sudo apt-get install -y wget
$ wget https://packages.microsoft.com/keys/microsoft.asc
$ sudo apt-key add microsoft.asc
$ curl https://packages.microsoft.com/config/ubuntu/16.04/mssql-server.list | sudo tee /etc/apt/sources.list.d/mssql.list
$ curl https://packages.microsoft.com/config/ubuntu/16.04/prod.list | sudo tee /etc/apt/sources.list.d/msprod.list

### CentOS 7 ###

# yum -y install wget
# wget https://packages.microsoft.com/config/rhel/7/mssql-server.repo
# wget https://packages.microsoft.com/config/rhel/7/prod.repo
# mv *.repo /etc/yum.repos.d/mssql.repo</pre>
Install MS SQL Server on Linux: 
 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">### Ubuntu 16.04 ###

$ sudo apt-get update
$ sudo apt-get install -y mssql-server

### CentOS 7 ###

# yum install -y mssql-server</pre>
Setup MS SQL server. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">### Ubuntu 16.04 ###

$ sudo /opt/mssql/bin/sqlservr-setup

### CentOS 7 ###

# /opt/mssql/bin/sqlservr-setup</pre>
 
Output: 
 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">Microsoft(R) SQL Server(R) Setup

You can abort setup at anytime by pressing Ctrl-C. Start this program
with the --help option for information about running it in unattended
mode.

The license terms for this product can be downloaded from
http://go.microsoft.com/fwlink/?LinkId=746388 and found
in /usr/share/doc/mssql-server/LICENSE.TXT.

Do you accept the license terms? If so, please type "YES": YES

Please enter a password for the system administrator (SA) account: Enter Admin Password
Please confirm the password for the system administrator (SA) account: Re Enter Admin Password

Setting system administrator (SA) account password...

Do you wish to start the SQL Server service now? [y/n]: n

You can use sqlservr-setup --start-service to start SQL Server, and
sqlservr-setup --enable-service to enable SQL Server to start at boot.

Setup completed successfully.</pre>
Start the MS SQL Service. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">### Ubuntu 16.04 ###

$ sudo systemctl start mssql-server
$ sudo systemctl enable mssql-server

### CentOS 7 ###

# systemctl start mssql-server
# systemctl enable mssql-server</pre>
 
Install SQL Server tools on Linux: 
It provides command line tools (sqlcmd and bcp), ODBC drivers and their dependencies. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">### Ubuntu 16.04 ###

$ sudo apt-get install -y mssql-tools

### CentOS 7 ###

# yum install -y mssql-tools</pre>
Steps: 
 
 
Accept License terms 
 
Firewall (CentOS / RHEL): 
 
Configure the firewall to allow 1433 port so that we can access the SQL server from external machines. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># firewall-cmd --permanent --zone=public --add-port=1433/tcp
# firewall-cmd --reload</pre>
Connect to MS SQL server: 
 
 
Once the installation is complete, connect to MS SQL server using the following command. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">sqlcmd -H 127.0.0.1 -U sa

Password: 
1></pre>
 
<a href="https://docs.microsoft.com/en-us/sql/linux/sql-server-linux-setup">Microsoft Official Document Here</a> 
 
 </div>

How to Install Microsoft SQL Server (MS SQL) on RHEL (CentOS) / Ubuntu

Install Microsoft SQL Server (MS SQL) on RHEL (CentOS) / Ubuntu Microsoft has released SQL Server for Redhat Enterprise Linux and Ubuntu ...

How to Install Taskwarrior (terminal based todo application) on Linux

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Install Taskwarrior (terminal based todo application) on Ubuntu/Centos<div>
 <div>
<div>
Taskwarrior is Free and Open Source Software that manages your TODO list from your command line. It is flexible, fast, efficient, and unobtrusive. It does its job then gets out of your way.</div>
<div>
 </div>
<div>
If you spend a lot of time on terminal (as a developer or system administrator) then constantly switching to a web app or another GUI based todo applicaations may not be a very productive thing to do. In that case, you may want to try a simple command line application instead.</div>
</div>
<div>
 </div>
<div>
Ubuntu based distribution</div>
<div>
 </div>
<div>
If you want to install Taskwarrior (terminal based todo application) on Ubuntu And Mint Linux enter following command:</div>
<div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$ sudo apt-get install todo -y</pre>
</div>
<div>
Centos based distribution</div>
<div>
To install taskwarrior on CentOS 6.x/7.x first enable epel repository and type following command:</div>
<div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$ sudo yum install epel-release -y
$ sudo yum install task -y
</pre>
</div>
<div>
 </div>
<div>
<div>
How to use taskwarior</div>
<div>
Taskwarrior has human-friendly natural command line syntax. You will also like its simplicity. I like how it doesn’t reinforce any particular methodology. Here is a simple command for adding a task:</div>
<div>
 </div>
<div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$ task add Example task due:Tomorrow</pre>
</div>
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<div>
Example screen:</div>
</div>
</div>
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 </div>
<div>
<div>
Few important commands you should know</div>
<div>
 </div>
<div>
<ul style="text-align: left;">
<li>task add sample task (adding a task, you could specify other things like priority or due date etc)</li>
<li>task list (it lists all the pending task with their ids and other details)</li>
<li>task 5 done (marks the task with the id 5 completed)</li>
<li>task 4 delete (deletes the task with id 4)</li>
<li>task all (displays all the pending and completed tasks)</li>
</ul>
</div>
<div>
If you want to know more about the features read the man pages (man task) or read some tutorials <a href="http://taskwarrior.org/download/task-2.5.0.ref.pdf">on official website</a>.</div>
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 </div>
<div>
www.hackthesec.co.in</div>
<div>
<a class="g-profile" href="https://plus.google.com/113492055880844042777" target="_blank">+Linux Tutorial</a> </div>
</div>
<div>
@<a href="https://www.twitter.com/Hackthesecurity">hackthesec</a></div>
</div>
</div>

How to Install Taskwarrior (terminal based todo application) on Linux

Install Taskwarrior (terminal based todo application) on Ubuntu/Centos Taskwarrior is Free and Open Source Software that manages your TO...

How to Install and use Log File Navigator – lnav in Ubuntu and CentOS linux

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<h1 class="post-title entry-title" style="background-color: white; border: 0px; color: #155c8e; font-family: "Titillium Web", Arial, sans-serif; font-stretch: inherit; font-variant-numeric: inherit; font-weight: 400; letter-spacing: -1px; line-height: 1.3em; margin: 0px 0px 10px; padding: 0px; vertical-align: baseline; word-wrap: break-word;">
Install and use Log File Navigator – lnav in Ubuntu and CentOS</h1>
<div>
<div>
The Log File Navigator, lnav, is an enhanced log file viewer that takes advantage of any semantic information that can be gleaned from the files being viewed, such as timestamps and log levels. </div>
<div>
 </div>
<div>
Using this extra semantic information, lnav can do things like interleaving messages from different files, generate histograms of messages over time, and providing hotkeys for navigating through the file. It is hoped that these features will allow the user to quickly and efficiently zero in on problems.</div>
<div>
 </div>
<div>
In this article we will show you how to install and use The Log File Navigator, lnav, on <a href="http://www.hackthesec.co.in/search/label/Ubuntu">Ubuntu </a>15.04/15.10/ and <a href="http://www.hackthesec.co.in/search/label/Centos">CentOS 7</a>.x</div>
</div>
<div>
 </div>
<div>
<div>
lnav – Features</div>
<div style="color: #333333;">
<ul style="text-align: left;">
<li>Single log view: all log file contents are merged into a single view based on message timestamps. No need to manually correlate timestamps across multiple windows or figure out the order in which to view rotated log files.</li>
<li>Automatic format detection for several common log files. It also detects gzip/bzi2 files and decompress them automatically on the fly.</li>
<li>Filters: display only lines that match or do not match a set of regular expressions. Filter by error level.</li>
<li>Timeline view: shows a histogram of messages over time. The number of warnings and errors are highlighted in the display so that you can easily see where problems have occurred.</li>
<li>Query logs using SQL: log files are directly used as the backing for SQLite virtual tables.</li>
<li>Automatic data extraction: built-in log message parser can automatically discover and extract interesting data from plainly formatted log messages.</li>
<li>Live operation: Search as you type. New log lines are automatically loaded and searched as they are added; filters apply to lines as they are loaded; and, SQL queries are checked for correctness as you type.</li>
<li>Syntax highlighting with configurable colourizing</li>
<li>Tab completion</li>
<li>Sessions</li>
<li>Supports Linux and Mac</li>
</ul>
</div>
</div>
<div>
Install lnav on Ubuntu 15.04/15.10 and Linux Mint 17.x</div>
<div>
 </div>
<div>
To install lnav on Ubuntu 15.04/15.10 and Linux Mint 17.x and other Ubuntu based distribution, type following command in your terminal:</div>
<div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$ sudo apt-get install lnav -y</pre>
</div>
<div>
<div>
Install lnav on CentOS 7</div>
<div>
 </div>
<div>
First, enable epel repository:</div>
<div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$ sudo yum install epel-release -y</pre>
</div>
</div>
<div>
Now, install lnav using yum command:</div>
<div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$ sudo yum install lnav -y</pre>
</div>
<div>
<div>
Using lnav command</div>
<div>
If you want to view logs using lnav you can do using the following command by default it shows syslogs.</div>
</div>
<div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$ lnav</pre>
</div>
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<div>
 </div>
<div>
If you want to view specific logs provide the path. Example:</div>
<div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$ lnav /var/log/clamav/</pre>
</div>
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<div>
 </div>
<div>
How to navigate in lnav</div>
<div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXmLlEjaj4f6ozCZaIHNnR8QHs2nehhcxyIlZatSI0lu9-R1xof12i1JacCfRYMFKL4LNFAKL5vvkrlvNHazZP_9Sq_9CDZtJZCbKsMDVUyJ9d3G1udhjiDjKClI3bvU8PpZNGi_MDABgx/s1600/how-to-use-lnav.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXmLlEjaj4f6ozCZaIHNnR8QHs2nehhcxyIlZatSI0lu9-R1xof12i1JacCfRYMFKL4LNFAKL5vvkrlvNHazZP_9Sq_9CDZtJZCbKsMDVUyJ9d3G1udhjiDjKClI3bvU8PpZNGi_MDABgx/s1600/how-to-use-lnav.png" /></a></div>
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For more information visit <a href="http://lnav.org/">official lnav site.</a></div>
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