chroot insecurity. (http://www.linuxsecurity.com/feature_stories/feature_story-99.html)
Unix papers on security focus. (http://www.securityfocus.com/unix)
Dave Dittrich on DDoS. (http://staff.washington.edu/dittrich/misc/ddos/)
IANA port assignments. (http://www.iana.org/assignments/port- numbers )
Port database. (http://www.portsdb.org)
"The Twenty Most Critical Internet Security Vulnerabilities: The Experts Consensus " SANS, 2003 (http://www.sans.org/top20)
ICAT CVE vulnerability database. (http://icat.nist.gov)
Bugtraq vulnerability database. (http://www.securityfocus.com/bid)
CERT vulnerability notes. (http://www.cert.org/nav/index_red.html)
