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Forum Discussion

Ravitheja_28471's avatar
Ravitheja_28471
Icon for Nimbostratus rankNimbostratus
Aug 22, 2016

Open Recursive DNS Resolvers

Open Recursive DNS Resolvers   Hello, one of our F5 GTM devices are acting as open recursive dns resolvers. But, actually they should act as to respong for only of our domain queries. I found that...
BIG-IP
BIG-IP DNS
security
Niels_van_Sluis's avatar
Niels_van_Sluis
Icon for MVP rankMVP
Aug 28, 2016

You might want to check the named configuration in ZoneRunner. Make sure that recursion is set to no. This should be the default. For more in check:

 

https://support.f5.com/kb/en-us/solutions/public/7000/000/sol7055.html