sh-3.2# nmap -sS -sV -P0 148.233.145.66

Starting Nmap 4.20 ( http://insecure.org ) at 2007-11-12 17:45 CST
Interesting ports on serveritesco.itesco.edu.mx (148.233.145.66):
Not shown: 1691 filtered ports
PORT     STATE  SERVICE      VERSION
22/tcp   open   ssh          SunSSH 1.1 (protocol 2.0)
53/tcp   open   domain
80/tcp   open   http         Apache httpd 1.3.36 ((Unix) PHP/5.2.4 mod_perl/1.29)
139/tcp  closed netbios-ssn
445/tcp  closed microsoft-ds
2021/tcp closed servexec