Port appears closed, but i can connect it using vnc client

[postcd]

Hello, on my linux VPS i used command netstat -tlnp to show open ports.
i see:

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 176/sshd
tcp 0 0 0.0.0.0:5901 0.0.0.0:* LISTEN 190/Xtightvnc
tcp 0 0 0.0.0.0:6001 0.0.0.0:* LISTEN 190/Xtightvnc
tcp6 0 0 :::22 :::* LISTEN 176/sshd

but i can connect vncserver at port 1 ( :1) via an vnc client app on my home computer. So i want to ask why port 1 appears to be not open? also tools like http://ping.eu/port-chk/ shows port 1 to be closed... thx

 

[areeda]

VNC uses ports 5900-59xx so :1 translates to 5901 and :101 translates to 6001 which also looks open. it looks like both 5901 and 6001 have a tightvnc server running.