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Windows Server 2003 Port Monitoring Utilities - See what ports an application is trying to use.

Hello,
I'm looking for any ideas on an easy-to-use, preferably free, utility which can help me determine what ports an application is trying to use when communicating with the network or other servers.

ie. A server is "supposed to be" communicating through ports 1433, 2121, and 8085. I'm told those ports are open through the firewall by our networking team, but the application fails to work properly.

I have tried wireshark but this is really a complex tool. Anything else out there which could help me?

Thanks!
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ottobock
Asked:
ottobock
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2 Solutions
 
Rick_O_ShayCommented:
From a command prompt - netstat -b
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dwarner8Commented:
Use TCP view. you can download for free and is a great resource. You can also download wireshark and capture all traffic and ports.

My suggestion is using TCP View located here, its a Microsoft product from sysinternals. There are lots of good tools here.

http://technet.microsoft.com/en-us/sysinternals/bb897437.aspx 
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ottobockAuthor Commented:
So far - I'm using both of your recommendations - and this is helpful!!
I was checking using NETSTAT before, but not with -B. Hmm, let's see how this (crappy) app is thinking. :-)
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ottobockAuthor Commented:
Network monitoring and tricks are still my weakest area in IT - big thanks for your advice!
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