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Jakuub's avatar
Jakuub
Icon for Nimbostratus rankNimbostratus
Jun 13, 2019

F5 APM Client IP and X-Forwarded-For

Hello,

is there any possibility to change Client IP parameter in F5 APM for the value in X-Forwarded-For header? I have APM behind snat/dnat and I can see only one IP address accessing APM.

 

Thank you.

2 Replies

  • Just enable the 'Insert X-Forwarded-For' option in the HTTP profile that your virtual server is using.

  • Jakuub's avatar
    Jakuub
    Icon for Nimbostratus rankNimbostratus

    You are not right but I fixed made it! Just disable restrict to single client IP check. Then you have to apply following iRule on all access-profile enabled VS.

     

    when HTTP_REQUEST {

       if { [HTTP::cookie exists "MRHSession"]} {

           set apmip [ACCESS::session data get session.user.clientip]

           set realip [HTTP::header X-Forwarded-For]

           if { ($apmip != $realip) && ($apmip != "") } {

               set sessionID [ACCESS::session sid]

               ACCESS::session remove -sid $sessionID

               HTTP::redirect "/my.logout.php3?errorcode=20"

           }

       }

    }

    when ACCESS_SESSION_STARTED {

       if {[HTTP::header exists X-Forwarded-For]}{

           set userip [HTTP::header X-Forwarded-For]

           ACCESS::session data set session.user.clientip $userip

       }

    }