Forum Discussion

Sergi0's avatar
Sergi0
Icon for Nimbostratus rankNimbostratus
Apr 02, 2018

GTM irule CNAME filter

I would like to create a filter on my GTM for remove CNAME and replace with the default answer like GTM bind does not have CNAME. I want to block respond CNAME I have "; dig cname www.wip.comp...
application delivery
BIG-IP DNS
devops
dns
gtm
irule
iRules
Sergi0's avatar
Sergi0
Icon for Nimbostratus rankNimbostratus
Apr 03, 2018

I would like to block GTM from any response except WIP type A.I tried to disable bind in DNS profile but it gives timeout for clients want is not good. I have created irule for listener. So clients have blank respond from GTM, no AAAA, CNAME or ANY in respond. 

when DNS_REQUEST {
  if {!([DNS::question type] eq "A") }  {
    DNS::answer clear 
    DNS::return
 }
 }