[root~]# nmap 192.168.0.100 -p 5060
Starting Nmap 4.11 (
http://www.insecure.org/nmap/ ) at 2013-04-04 15:33 MSK
Interesting ports on 192.168.0.100:
PORT STATE SERVICE
5060/tcp open sip
MAC Address: 00:10:18:7E:2B:00 (Broadcom)
Nmap finished: 1 IP address (1 host up) scanned in 0.304 seconds