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Ip tables is the firewall built into most distribution of Linux.
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Ip tables is the firewall built into most distribution of Linux.

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You can run Linux without AV, for *nix systems Patching... is a must! also use the right user:group, access permission, turn off unwanted services, disable unused modules, tune/hardening &nbsp;server, &nbsp;hide configuration files, restrict access, firewall would help to protect the system. If you want AV, check out ClamAV, rkhunter, chkrootkit and avg scanners<br />
<a href="http://free.avg.com/us-en/download.prd-alf" rel="ugc">http://free.avg.com/us-en/download.prd-alf</a><br />
<a href="http://www.linuxplanet.com/linuxplanet/reviews/6479/1" rel="ugc">http://www.linuxplanet.com/linuxplanet/reviews/6479/1</a><br />
<a href="http://www.comodo.com/home/internet-security/antivirus-for-linux.php" rel="ugc">http://www.comodo.com/home/internet-security/antivirus-for-linux.php</a><br />
<a href="http://www.makeuseof.com/tag/free-linux-antivirus-programs/" rel="ugc">http://www.makeuseof.com/tag/free-linux-antivirus-programs/</a><br />
<a href="http://www.rfxn.com/projects/linux-malware-detect/" rel="ugc">http://www.rfxn.com/projects/linux-malware-detect/</a><br />
<a href="http://www.f-prot.com/products/corporate_users/unix/" rel="ugc">http://www.f-prot.com/products/corporate_users/unix/</a><br />
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As a firewall you can block IP Address using Fail2ban and IPTables<br />
<a href="http://www.fail2ban.org/" rel="ugc">http://www.fail2ban.org/</a><br />
<a href="http://www.cyberciti.biz/tips/linux-iptables-examples.html" rel="ugc">http://www.cyberciti.biz/tips/linux-iptables-examples.html</a><br />
<a href="http://www.thegeekstuff.com/2010/07/fail2ban-howto/" rel="ugc">http://www.thegeekstuff.com/2010/07/fail2ban-howto/</a><br />
<a href="https://help.ubuntu.com/community/Fail2ban" rel="ugc">https://help.ubuntu.com/community/Fail2ban</a>
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You can run Linux without AV, for *nix systems Patching... is a must! also use the right user:group, access permission, turn off unwanted services, disable unused modules, tune/hardening  server,  hide configuration files, restrict access, firewall would help to protect the system. If you want AV, check out ClamAV, rkhunter, chkrootkit and avg scanners
http://free.avg.com/us-en/download.prd-alf [http://free.avg.com/us-en/download.prd-alf]
http://www.linuxplanet.com/linuxplanet/reviews/6479/1 [http://www.linuxplanet.com/linuxplanet/reviews/6479/1]
http://www.comodo.com/home/internet-security/antivirus-for-linux.php [http://www.comodo.com/home/internet-security/antivirus-for-linux.php]
http://www.makeuseof.com/tag/free-linux-antivirus-programs/ [http://www.makeuseof.com/tag/free-linux-antivirus-programs/]
http://www.rfxn.com/projects/linux-malware-detect/ [http://www.rfxn.com/projects/linux-malware-detect/]
http://www.f-prot.com/products/corporate_users/unix/ [http://www.f-prot.com/products/corporate_users/unix/]

As a firewall you can block IP Address using Fail2ban and IPTables
http://www.fail2ban.org/ [http://www.fail2ban.org/]
http://www.cyberciti.biz/tips/linux-iptables-examples.html [http://www.cyberciti.biz/tips/linux-iptables-examples.html]
http://www.thegeekstuff.com/2010/07/fail2ban-howto/ [http://www.thegeekstuff.com/2010/07/fail2ban-howto/]
https://help.ubuntu.com/community/Fail2ban [https://help.ubuntu.com/community/Fail2ban]

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What are some good Internet Security/antivirus programs, and Firewalls for Linux, specifically for Ubuntu 12.04 LTS.
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What are some good Internet Security/antivirus programs, and Firewalls for Linux, specifically for Ubuntu 12.04 LTS.

Internet Security for Linux

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.