Newsgroups
You might find a variety of Usenet newsgroups to be interesting sources of information on network security and related topics:
- comp.security.announce
- Computer security announcements, including new CERT-CC advisories
- comp.security.unix
- Unix security
- comp.security.misc
- Miscellaneous computer and network security
- comp.security.firewalls
- Firewalls issues only
- alt.security
- Alternative discussions of computer and network security
- comp.admin.policy
- Computer administrative policy issues, including security
- comp.protocols.tcp-ip
- TCP/IP internals, including security
- comp.unix.admin
- Unix system administration, including security
- comp.unix.wizards
- Unix kernel internals, including security