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Any good protocol monitors?

B

Blur

Senior member
Hey guys,

I'd like to find a program that can tell me what protocol (TCP, UDP) and port an application is using to access an outside network. Anyone know of such a program? Freeware would be great if possible.

Thanks
 
tcpdump + ethereal/wireshark FTW

EDIT: TCP Dump to capture, ethereal/wireshark (on a computer that can be crashed) to read the capture file and do analysis on.

WHy not just run ethereal and skip the tcpdump capture? because Ethereal is the only application with more security problems then IIS5
 
Originally posted by: Blur
Originally posted by: n0cmonkey
netstat?
Click to expand...

I was wondering about that, does netstat show UDP activity too? When i ran it it only showed TCP activity.
Click to expand...

Yes, it shows UDP also. Look for port 445 on a WinXP machine (near the bottom, TCP apparently comes first).
 
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