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03.14.2008 at 09:21PM PDT, ID: 23243656
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usage of tcpdump

Asked by jeffmc033 in Linux Networking, Miscellaneous Networking, User Datagram Protocol (UDP)

Hi -

I'm not a unix expert by any stretch.
I am trying to debug a application I have written which appears not to be receiving Multicast Packets bring broadcast from a server elsehwere on my network.

I can't tell if the device/OS itself is blocking the packets or the libraries I'm using is somehow not working correctly.

MY guess is that tcpdump will provide me the answer. the trouble there are some many options to run it, I can't make sense of it all.

Can someone tell me the exact tcpdump command I would execute if I wanted to trap all inbound packets
arriving to the device. The "broadcast" packets are being sent to the standard UPnP address:
239.255.255.250 port 1900

Since these are UDP packets does it mater that I am trying to use tcpdump
much appreciated.Start Free Trial
[+][-]03.14.2008 at 09:54PM PDT, ID: 21131510

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Zones: Linux Networking, Miscellaneous Networking, User Datagram Protocol (UDP)
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Solution Provided By: mikelfritz
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Solution Grade: A
 
 
[+][-]03.15.2008 at 01:55AM PDT, ID: 21131899

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[+][-]03.15.2008 at 02:00AM PDT, ID: 21131903

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[+][-]03.17.2008 at 03:04AM PDT, ID: 21140868

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[+][-]05.11.2008 at 10:12AM PDT, ID: 21542945

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[+][-]05.15.2008 at 07:51PM PDT, ID: 21579669

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