Forum Discussion
UDP DNS listener doesn't resolve DNS query but TCP DNS listener can
- Jul 25, 2023
If using the same Self IP as the GTM listener, make sure port lockdown permits both udp and tcp 53. Also check the DNS profiles attached to both listeners for UDP and TCP to make sure they are both the same. Also check subnet mask and IP address for any typos.
If using the same Self IP as the GTM listener, make sure port lockdown permits both udp and tcp 53. Also check the DNS profiles attached to both listeners for UDP and TCP to make sure they are both the same. Also check subnet mask and IP address for any typos.
Thanks. I checked my network and it's blocking UDP port 53. Problem solved
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