mouverthewanderer
Nimbostratus
Jul 24, 2023UDP DNS listener doesn't resolve DNS query but TCP DNS listener can
I'm using an F5 GTM R5000 Series device I have configured the following components: - Configured Self-IP, ensuring no Firewall block UDP and TCP port 53. - Created data center, Server and Virtual...
- 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.