A short guide to security

02-25-2006	#1 (permalink)
fingal Linux Guru Join Date: Jul 2003 Location: Birmingham - UK Posts: 1,539	A short guide to security Here at linuxforums.org we are often asked about the potential threat of a virus or malware attack. This short guide is designed to answer some of your questions so that your experience with Linux will be both safe and enjoyable. Generally, you will find that by using Linux you are less likely to be the victim of a virus attack, but you still need to take some basic precautions. Here are some previous threads which deal with the question of virus protection for Linux users: Virus Software For Linux What is the BEST anti-virus program? Your security can also be compromised by the presence of a 'rootkit' on your system. This is a set of software tools installed by an unauthorised third party to gain access to a computer. Perhaps the best way to detect a rootkit is to install and run Rootkit Hunter As you may have realised from reading some of the threads listed above, up-to-date anti-virus software is readily available for Linux systems. One of the best known is Clam-Av which is pre-installed on some distros. It can be downloaded from this link. There is also a useful graphical front end available for Clam-Av, and this can be found here. Many Linux users ensure that they have extra security by installing a firewall. Here are some previous threads which discuss this: Is a firewall really needed? What's a good firewall that can be installed as a RPM? What's the best firewall distro? As you can see, there are a number of different firewalls which will help to secure your computer. Here is a short selection complete with web links: Guarddog - A good firewall to begin with. Not too hard to install or configure. Smoothwall - This can be used to turn a redundant PC into a firewall. Shorewall - A high-level tool for configuring Netfilter. IPCop - Capable of displaying network traffic statistics. As you will have realised by now, security is a big subject, and this guide cannot hope to cover all your questions. There are entire sites devoted to this, and here are a few for you to visit: Linux security.com Linux-Sec.net Security Quick-Start Security Report: Windows vs Linux As you become more proficient you will want to consider taking further steps to deny access to system crackers. To check the strength of your passwords try 'John the Ripper'. To 'harden' your system even more you can run 'Bastille'. For testing the security of a remote computer learn all about Nmap. Finally, a quick way to test the security of your distro is to visit this site for a free system check. -------------------------------------------------------------------- Note to moderator(s): edit at will - in the end I thought this was the best way to submit this post, edit the links and avoid undue stress. __________________ I am always doing that which I can not do, in order that I may learn how to do it. - Pablo Picasso Last edited by techieMoe; 01-11-2007 at 02:18 PM.. Reason: Updated "Security Report: Windows vs Linux" link