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Forum Discussion

mabdrasol's avatar
mabdrasol
Icon for Nimbostratus rankNimbostratus
Jul 31, 2019

Listener is not responding to DNS queries from internet

Hello, we have F5 GTM with LTM at same box in HA. F5 nodes are behind a firewall. F5 nodes are using private addresses(self and listeners). listener ip is nated to public ip in the firewall. li...
application delivery
BIG-IP DNS
Yoann_Le_Corvi1's avatar
Yoann_Le_Corvi1
Icon for Cumulonimbus rankCumulonimbus
Jul 31, 2019

Hi,

 

We'll probably need more info there :

  • Have you verified that the DNS query send from Internet actually gets to your listener ?
  • Maybe a quick tcpdump trace of internal vs external query would help ?
  • Have you implemented "Views" ?
  • Your NS records for the zone on the Internet are pointing to your listeners right ?

 

Other info may be required still, but we can start with this

 

Yoann