Hello,
I ran a unix application ; I want to know which ports
these application opens.
(This application simply opens sockets with 2 or 3 ports).

How can I do it ?

I of course can do it indirectly.
For example, run nmap before starting the application and
after starting it , and see the difference in ports.
but is there a direct way ?
regards,
sting

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In article <2ff4a208.0312100516.1d384887@posting.google.com>, Sting wrote:
quote:

> Hello,
> I ran a unix application ; I want to know which ports
> these application opens.
> (This application simply opens sockets with 2 or 3 ports).
>
> How can I do it ?
>
> I of course can do it indirectly.
> For example, run nmap before starting the application and
> after starting it , and see the difference in ports.
> but is there a direct way ?

try netstat , depending on which OS your on, it might show
you pid<->port relations.

--
Vennlig hilsen/Best Regards
Nils Olav Selåsdal <NOS at Utel.no>
System Engineer
UtelSystems a/s

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Nils O. Selåsdal wrote:
[QUOTE]
> In article <2ff4a208.0312100516.1d384887@posting.google.com>, Sting wrote:
 

Look up this program: http://freshmeat.net/projects/lsof/

It's *very* handy for doing this kind of thing. It shows all open file
descriptors for a process. You can just grep the output for the socket
connections.

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2003-12-10, 05:16(-08), Sting:
quote:

> I ran a unix application ; I want to know which ports
> these application opens.
> (This application simply opens sockets with 2 or 3 ports).

[...]

lsof -ai -c <cmd-name>

or

lsof -ai -p <pid>

List the opened sockets (either listening or connected ones, TCP
or UDP).

lsof -i
lists every opened socket on your system.

--
Stéphane                      ["Stephane.Chazelas" at "free.fr"]

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