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What's a display filter that only shows packets with a particular UDP source port number?

asked 2020-03-09 15:14:01 +0000

updated 2020-03-09 18:12:59 +0000

Guy Harris gravatar image

I'm looking at a UDP capture for a command prompt inquiry where I released my current IP address and then renewed it. Even with the UDP filter, there's still a lot of data packets to go through so I need to apply a second filter that will only show the UDP source port number of the client. Any ideas on how to do that? I've Googled it a few times but can't find the exact filter I would need. Any help would be greatly appreciated. Thanks!

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answered 2020-03-09 18:12:48 +0000

Guy Harris gravatar image

If you only want to see packets with a particular UDP source port value, that would be "udp.srcport == <value>". where "<value>" is the port number value.

That will, however, only show packets from the client, not packets to the client. If you want to see packets from and to that port, that would be "udp.port == <value>".

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Asked: 2020-03-09 15:14:01 +0000

Seen: 149 times

Last updated: Mar 09