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Forum Discussion

rameshr_132303's avatar
rameshr_132303
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Nov 19, 2015

NSlookup returning both Private and Public IPs for a URL

Hi All,   I have a WIP set up in my GTM and created a Topology record to state that any request coming from WAN, a private IP needs to be returned and whenever a request comes from the internet th...
application delivery
BIG-IP
anoop1's avatar
anoop1
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Nov 20, 2015

Samir,

 

Your approach will discard all the requests coming from Public dns , and external users will not able to resolve the ip at all, so we should prefer DNS_RESPONSE event and modify the rr record based on the subnet.

 

The logic should be like below. when DNS_RESPONSE { if the dst ip contains the internal ip and the rr record is external then change rr to internal ip.

 

if the dst ip contains the external ip and the rr record is internal then change rr to external ip.

 

else keep the rr record unchanged. }