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
Stanislas_Piro2's avatar
Stanislas_Piro2
Icon for Cumulonimbus rankCumulonimbus
Feb 03, 2017

Hi,

 

I will comment the Leonardo DNS service description.

 

when configure Listener a virtual server is created with the following behavior:

 

  • if a wide IP match the DNS request:
    • if the pool assigned to the Wide IP returns a VS, answer with it
    • if no pool member is available and fallback method is "return to DNS" the request is released to DNS server
    • if no pool member is available and fallback method is not "return to DNS" the request is ignored
  • if not, the request is released to DNS

If No pool is assigned to the Listener and the Listener IP is a self IP (floating or not), Released to DNS requests are handled by local Bind

 

If Pool is assigned to the listener, the DNS request will be load balanced and forwarded to one pool member.

 

In this configuration, you can assign a pool with your ISP DNS forwarders.