Port (TCP) x Process

[Kiko Azevedo]

Hi

Is there a way to know to which process belong a particular port?

Example in port 32773-32779 are known to be for rpc services. But to which process

do they pertain to, that's another issue?

In linux the command is:

# netstat -anp (where "p" is process ID)

Thanks !!!


Marcus Vinicius de O. Azevedo

[Anil C. Sedha]

If you mean associating a port with a process id, you may use "lsof" to do that.

you can download it and use it.

lsof -i @hostname:port

for more options use lsof -h


Great utility to use.

Regards,
Anil

[Jeff Schussele]

Hi Marcus,

netstat will not give you that info.
Best way to get it is to use the lsof command.
It's a free 3rd party program & available here:

http://hpux.cs.utah.edu/hppd/hpux/Sysadmin/lsof-4.67/

It's a tool ALL SAs should have on all systems.

HTH,
Jeff

[Sundar_7]

Hi,

There is no built in tool. You have to download lsof tool from the net to
achive this.

Once you download and install lsof command then you can use

# lsof -i:portnumber

to find out the processes using the port number

Thanks,

Sundar.