For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

Govind_32899's avatar
Govind_32899
Icon for Nimbostratus rankNimbostratus
Jan 27, 2017

Configure F5 GTM to forward DNS query

I would like to Configure F5 GTM to forward DNS query to public DNS server for name resolution . We are planning to set Listner IP as a DNS server for resolving name server for that the client .Shoul...
BIG-IP DNS
security
tbird_40716's avatar
tbird_40716
Icon for Nimbostratus rankNimbostratus
Jan 15, 2019

I have a similar issue with v13.

 

I have a listener IP with a default pool. What I am expecting is that local wideips are resolved but for records not existing locally the request will be forwarded to the pool member. What is happenning is that all requests are being forwarded. It does not check locally first. According to the v13 GTM implementations document, what I'm after should be possible.

 

  • Leonardo_Souza's avatar
    Leonardo_Souza
    Icon for Cirrocumulus rankCirrocumulus
    Jan 16, 2019

    It should go for wide ips first, then forward or local bind depending on your configuration.

     

    Can you post here the listener configuration, the linked DNS profile, and the pool?

     

  • tbird_40716's avatar
    tbird_40716
    Icon for Nimbostratus rankNimbostratus
    Jan 16, 2019

    Hi Leonardo, I had a call to support and the config is actually working as expected. I was testing from the GTM itself which does not work - it checks bind only I think, does not scan through the wideips. From a remote server the wideips are checked correctly before the forward occurs. All good. Thank you.