SYN Scan against Docsrv

# nmap -sS -T4 docsrv.caldera.com

Starting nmap 3.76 ( http://www.insecure.org/nmap/ )
Interesting ports on docsrv.caldera.com (216.250.128.247):
(The 1660 ports scanned but not shown below are in state: filtered)
PORT    STATE  SERVICE
80/tcp  open   http
113/tcp closed auth
507/tcp open   crs

Nmap run completed -- 1 IP address (1 host up) scanned in 28.624 seconds