Network Security Forum - The Network Security Forum is a place to discus topics on Security, Linux, Wireless, Hardware, Software, Operating Systems, etc. - http://www.networksecuritytech.com
Security and Privacy Forums - Forums for discussing securing the home and SOHO users. - http://www.dslreports.com/forum/security,1
Gladiator Security Forum - A forum to discuss general security matters. - http://gladiator-antivirus.com/forum/
Tech Support Guy Security Forums - Since 1996, Tech Support Guy has been providing free technical support to computer users of all experience levels. - http://forums.techguy.org/54-security/
Castle Cops - Discussion forums. Subforums include firewalls, homeland security and specific security vendor products. Also offer software reviews and downloads. - http://castlecops.com/
Wilders Security Forums - Security forums covering a wide array of topics including spyware, viruses and privacy software. - http://www.wilderssecurity.com/
Security Forums Dot Com - Offers support forums on a selection of IT security topics including firewalls, encryption and malicious software. Based in UK. - http://www.security-forums.com/