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mfkk531_168091's avatar
mfkk531_168091
Icon for Nimbostratus rankNimbostratus
Apr 13, 2016
Solved

Have to do reverse dns lookup on client IP, and insert the name into http header, and send to server. Help!

I'm currently doing XFF in http profile   I have a requirement to do reverse dns lookup on client IP, and insert the resolved name into http header, which the backend server can pick up.   Th...
application delivery
iRules
LTM
  • ekaleido_26616's avatar
    ekaleido_26616
    Apr 13, 2016

    Maybe this?

     

    when CLIENT_ACCEPTED {

     

    set reverseDns [RESOLV::lookup @8.8.8.8 -ptr [IP::clientaddr]]

     

    }

     

    when HTTP_REQUEST {

     

    HTTP::header insert YOUR_HEADER_NAME $reverseDns

     

    }

     

ekaleido's avatar
ekaleido
Icon for Cirrus rankCirrus
Apr 13, 2016

Maybe this?

 

when CLIENT_ACCEPTED {

 

set reverseDns [RESOLV::lookup @8.8.8.8 -ptr [IP::clientaddr]]

 

}

 

when HTTP_REQUEST {

 

HTTP::header insert YOUR_HEADER_NAME $reverseDns

 

}

 

mfkk531_168091's avatar
mfkk531_168091
Icon for Nimbostratus rankNimbostratus
Apr 13, 2016
Thanks for the quick answer. 1. I'm running v11.5.2 - Do i have to include the dnd server IP ? or the default tmm dns servers will work ? 2. Where it says "YOUR_HEADER_NAME" , should i be having a specific name? I just want to kee everything same - just have the dns name inserted instead of IP Thanks