nmap **мой внешний ip**
Starting Nmap 6.40 (
http://nmap.org ) at 2016-11-11 14:17 MSK
Nmap scan report for 94.140.235.73
Host is up (0.036s latency).
Not shown: 994 closed ports
PORT STATE SERVICE
23/tcp open telnet
53/tcp open domain
80/tcp open http
5900/tcp filtered vnc
8888/tcp open sun-answerbook
9999/tcp open abyss
Nmap done: 1 IP address (1 host up) scanned in 1.79 seconds