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ntpMerlin Display of NTP Requests?

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TonyK132

Senior Member
Is it possible to dynamically display the requests for the NTP service, kind of like what Diversion does for its requests? I'd like to see what devices are requesting the time, and how often.
 
I think you can see the session with this
Code:
 conntrack -E | grep -E 'port=123.*192.168'

If you install tcpdump from Entware, you can run something like this to see in detail:
Code:
opkg install tcpdump

Code:
 tcpdump -i br0 -p port 123 and host 192.168
 
conntrack seems to work, but so far, all the traffic that it is capturing are UDP. Would I also need to do tcpdump to catch that traffic? Or, is all ntp traffic UDP? Now that I know about conntrack, I'll research how to do more with it. Thanks for getting me started with this.
 
Update: Looks like the conntrack tool also captures TCP packets for port 123.
 

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