What does 'immutable' mean?

What is SSH?

1 gig SMTP test..

Route schools her. TCP/IP, SYN..huh?

Master of unix logging!

Krys schools her. Firewalls, TCP Wrappers..huh?

General Unix Mayhem!

X-Windows Guru!

Fyodor schools her. NMAP Port Scanner!

'chfn' does what?!

RMing 'rm' wackiness?!