We have a TFTP server running on our network and sometimes we need to get a handle on the requests on the server. By default if you are using linux and the tftp server through xinetd you won’t have a log file to look at. Thus you need to use TCPDUMP… here is how you do it:
tcpdump port 69 -v
This was really helpful for us when we were setting up our Cisco 7960 phones and needed to get a handle on what in the world the crazy Cisco firmware was even requesting!
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