References
http://www.apple.com/support/security/
Open Firmware
http://www.macdevcenter.com/pub/a/mac/2003/02/18/secure_tibook.html
http://docs.info.apple.com/article.html?artnum=106482
Login
http://www.macworld.com/2003/08/secrets/macosxhints/
Keychain
http://www.informit.com/articles/article.asp?p=169576&seqNum=6
Firewall
http://www.cert.org/tech_tips/packet_filtering.html
ipfw manual page
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/firewalls.html
Network Services
xinetd manual page
http://www.openna.com/documentations/articles/xinetd/part4.php
File Sharing