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Philip_Bray_719's avatar
Philip_Bray_719
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Jul 02, 2014

iRule Possibilities for LDNS from a client workstation

Hi,   We are implementing F5 GTMs in several data centers globally and need to implement topology based load balancing based on the initiating LDNS source. All the obvious methods i.e authoritativ...
application delivery
BIG-IP DNS
design
devops
iRules
The_Bhattman's avatar
The_Bhattman
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Jul 03, 2014

Hi Philip, Unfortunately if the GTM sees the current DNS servers as the LDNS source so will the iRule on it. DNS doesn't carry special information regarding the client who requested so you can't pick that up within iRule either. However, you may be able to accomplish this by asking to turn off recursive for a specific domains. I do remember that with Windows DNS it's a global settings so it's basically an ON or OFF switch accross the board. However, I do remember that you can do this in BIND.

 

I hope this helps,

 

-=Bhattman=-