Possible Duplicate:
Get connecting IP from specified ports that using by other program.
If a port is used by a program, is there any way I can listen that port and get the connected IP on that port?
views:
103answers:
3
+2
A:
- No, you cannot listen on a port that another process is already listening on.
- But yes, you can determine the TCP/IP connections currently active on that port, as has been answered in your exact duplicate question (namely using
netstat).
If this doesn't answer your question, you should try to give more information what you're trying to achieve.
dtb
2009-11-15 22:07:08
Actually, there is a game server application runs on my server, it opens ports for communication with clients. I want to write a program(or other ways) to monitor these ports, get the IP addresses of the connected clients, then record them.Thank you
ED
2009-11-15 22:47:47
And the answer is -- *drumroll* --: `netstat`
dtb
2009-11-15 22:50:24
Or a packet sniffer, as @bua pointed out.
dtb
2009-11-15 22:52:06
The problem was solved, thanks guys!
ED
2009-11-16 01:48:07
A:
I'm not sure how exactly you'd do it in code, but the information is available by running netstat -b.
jheddings
2009-11-15 22:07:16
+2
A:
You can also sniff whole network interface, and filter your related ports of interest.
bua
2009-11-15 22:23:18