sh-3.2# nmap -sS -sV -P0 148.233.145.72 Starting Nmap 4.20 ( http://insecure.org ) at 2007-11-12 17:28 CST Interesting ports on customer-148-233-145-72.uninet-ide.com.mx (148.233.145.72): Not shown: 1691 filtered ports PORT STATE SERVICE VERSION 22/tcp open ssh OpenSSH 4.3p2 Debian 9 (protocol 2.0) 25/tcp open smtp Cisco PIX sanatized smtpd 80/tcp open http Apache httpd 1.3.34 ((Debian) PHP/5.2.0-8+etch5~pu1) 110/tcp open pop3 Courier pop3d 139/tcp closed netbios-ssn 445/tcp closed microsoft-ds Service Info: OS: Linux; Device: firewall