There are many security- related web sites and sources of information on the Internet. Use these links at your own risk, as there is some conflicting information on methodologies and implementation.
http://www.li.org/
http://www.linux.com/
http://www.linux.org/
http://www.linux.org.uk/
http://www.linuxgazette.com/
http://www.linuxjournal.com/
http://www.linux-mag.com/
http://www.linuxplanet.com/
http://www.linuxtoday.com/
http://www.linuxworld.com/
http://www.redhat.com/
http://www.suse.com/
http://www.tldp.org/