How to check XXX port is open in HP Unix

[prashant lathigara]

I want to check whether the XXX port is open for the specific HP Unix machin from network.
Any command or any scripts is there for checking that xxx port is open or not.

[Pieter 't Hart]

"netstat -a" or "netstat -a |grep XXX" may display a listener on this port

regards,
Pieter

[Dennis Handly]

You can also use lsof:
http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=1139542

[Jozef_Novak]

Also telnet from another box can be used to check whether the port is open:

# telnet target_system_ip

[T G Manikandan]

lsof -i tcp/udp:

[prashant lathigara]

i want to check that how many port access is already given for specific server.