Forum Discussion
mfkk531_168091
Nimbostratus
NimbostratusHave 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...
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
Cirrus
CirrusMaybe 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_168091Thanks 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- ekaleidoYOUR_HEADER_NAME would be whatever you name the header that the servers will be parsing out. As far as specifying the DNS server, I found this stating you don't have to specify one assuming your local resolver has been setup properly: "By default RESOLV::lookup queries the BIG-IP's local caching nameserver (bind) which you must configure in advance. If your RESOLV::lookup queries don't seem to work you should adjust your BIG-IP configuration as explained in f5 Solution Note SOL12224" I hope this helps and I hope it works for you.
- mfkk531_168091Awesome! Ill use this info. Many thanks again!!!