Category: Security

Learn | Teach Open Source Technologies

What is GRSecurity

Grsecurity® is an extensive security enhancement to the Linux kernel that defends against a wide range of security threats through intelligent access control, memory corruption-based exploit prevention, and a host of other system hardening that generally require no configuration. It has been actively developed and maintained for the past 15 years. Commercial support for grsecurity…
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Thousands Linux and FreeBSD Servers Infected with Mumblehard Spamming Malware

The sophisticated Mumblehard spamming malware infects thousands of Linux and FreeBSD servers going under the radar for at least five years. In the last seven months, several thousand Linux and FreeBSD machines have been infected with a sophisticated malware dubbed Mumblehard. The infected machines were part of a botnet used, in the last five years, to…
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How to Test WordPress Security using Open Source Security tool WP-SCAN

Before I dive in this post, I would like to say that everything here for educational purposes only! Now we can move on. WordPress is exceptionally prevalent, on the grounds that is the most easy to use CMS (Content Management System) in the World. Numerous essential organizations or superstars are utilizing WordPress for their sites,…
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Installation & configuration of ModSecurity on APACHE

Mod Security is a web based firewall (WAF) designed for apache (though there is a version available for IIS too). It is widely used and highly effective. But there is a learning curve in using modsec. You can start exploring by installing ModSec on your system. INSTALLATION USING YUM To install modsec from YUM you…
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Setting up 802.1q VLAN tagging by loading 8021q Linux kernel driver Check that Linux kernel driver module called 8021q is loaded: # lsmod | grep 8021q If it is not loaded, load it with the following modprobe command: # modprobe 8021q How to VLAN Linux usingCentOS/RHLE/Fedora Linux I am using RHEL/CentOS Linux with VLAN ID…
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Installing Nagios core on RHEL / CENTOS 5.x – RHEL / CentOS 6.x Fedora 15/16/17/18/19/20

What is Nagios An enterprise-class monitoring and alerting solution that provides organizations with extended insight of their IT infrastructure before problems affect critical business processes. Requirements We require following things for Installing Nagios: These are Just Pre-requisites. We need them to other things work … 1. Apache and PhP (php is optional) 2. gcc, glib,…
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Snort RPM Based Installation with SnortSnarf and Snort Rule Creation Methods on Linux RHEL /CentOS / Fedora

RPM Based Installation of Snort with SnortSnarf and Snort Rule Creation Methods: written by: Muhammad Farrukh Siddique Snort is an open source Network Intrusion Detection System Snort can also act as Sniffer and Logger In this section we will discuss the more beneficial part of Snort that is Intrusion Detection System (IDS) Snort can also…
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HTop – CPU, Memory & Process Monitoring Utility in Linux by Qasim Mehmood

Htop is a text-mode, interactive process viewer for Linux run via console/ssh, and to install htop on Linux is a pretty simple task. Among other things, htop allows you the following: Quickly view key performance statistics such as CPU(multi-core layout), Memory and Swap usage Details. Scroll the process list vertically and horizontally to see all processes and complete…
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Virtual Box Machine Settings Urdu CBT by Babar Zahoor

Virtual Box Machine Settings Virtual Box Machine Settings Urdu CBT by Babar Zahoor (Source:

Bind DNS Server Configuration in Chrooted Environment by Babar Zahoor

Updated :08-01-2011 Purpose: Configuration of DNS (Bind) server in chroot environment. OS CentOS 5.4 X86_64 ——————————————————- Please Install the bind packages ——————————————————- [root@ns1 ~]# yum install bind bind-utils bind-* Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * addons: * extras: * updates: addons | 951 B 00:00 extras | 1.1 kB 00:00…
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