Basic-Security

Basics of SELinux in Linux

Basics of SElinux What is SELinux? SELinux is a set of security policies/modules which are going to apply on the machine to improve the overall security of the machine. These are the Linux security modules(LSM) which are loaded in to kernel to improve security on accessing services/files which improve security. SELinux is short form of(…)

How To Generate Randum Password

How to create Random password quickly in Linux? Some times when creating bulk users, admins are forced to create complex passwords. But how to do it? How many you can set manually? Let me put it in this way. For one or two users we can think for a random password and assign to them.(…)

How To Use IPtables to Block ICMP (Internet Control Message Protocol) Requests?

How to use IPtables to block ICMP (Internet Control Message Protocol) requests? Ans : To do this we have understand why we require this thing should be done. When Hackers try to hack in to any machine first thing they will do is a basic ping test. Code :#ping target-machine If this is succeed they(…)

SNORT(IDS/IPS) Configuration and Implemenation

Lets start how to install SNORT which is An Intrusion detection system (IDS) and an Intrusion Prevention System (IPS). We tested installation of SNORT on RHEL5. Step1 : Download following packageslibpcap-1.0.0.tar.gzpcre-8.00.tar.gzlibnet-1.0.2a.tar.gz (This is optional package if you want SMB popup alerts on window’s machines.)snort-2.8.5.1.tar.gzacid-0.9.6b23.tar.gz Note : Don’t try to install SNORT through rpm packages, try(…)

How To Take The Backup Of MBR(Master Boot Recorder)

1.How to take the backup and restore MBR? Why do you require to take the backup of your MBR? Ans : MBR (Master Boot Recorder) is a vital part of your hard disk which contains booting information, without it its difficult to boot the system. Suppose you have windows and Linux duel boot on your(…)

How To Use VNSTAT To Monitor Bandwidth Usage.

There are so many tools to monitor network such as MRTG, now I am going to explain such tool which monitors bandwidth for a system, ie vnstat(view network statistics). Its very much easy to install and configure. This tool can give you full details about how much bandwidth used on the basics of, Per month.(…)

10 Commandments !! U like it for sure!!

This is a guest post by Praveen 10 COMMANDMENTS !! U LIKE IT FOR SURE !! =>1 People are illogical, unreasonable, and self-centered. Love them anyway. =>2 If you do good, people will accuse you of selfish, ulterior motives. Do good anyway. =>3 If you are successful, you will win false friends and true enemies.(…)