SirDice said:It depends on what kind of security audit. There are tools like security/nessus that can audit services. security/nikto is more geared towards auditing web applications. There are others too but I'd need to know what you're looking for specifically.
adripillo said:looking for TCP/IP, LAN, Wireless
SirDice said:Start off with security/nessus. That'll give you a nice overview.