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Craig_13881's avatar
Craig_13881
Icon for Nimbostratus rankNimbostratus
Jul 25, 2011

Return DNS replies to specific clients

I'm trying to return DNS replies to only a couple of different subnets. If the request comes in from anything else, I'd like to ignore it, or return a bogus response. Trying to get this to work, but...
application delivery
dev
devops
iRules
Craig_13881's avatar
Craig_13881
Icon for Nimbostratus rankNimbostratus
Jul 26, 2011
The iRule below works, I just need to get the syntax correct for the subnets and I'll be good. Going to play around with that some more. 10.0.0.53 is the IP of the internal DNS server making the request to the GTM. 


when DNS_REQUEST {
  if { ![IP::addr [IP::client_addr] equals 10.0.0.53]  } {
   cname www.blahblahblah.com
     }
}