Forum Discussion

jba3126's avatar
jba3126
Icon for Cirrus rankCirrus
Mar 31, 2017

iRule to Rewrite User Agent Header

We have a client that has an internal browser policy for IE to run in compatibility mode due to legacy applications. Unfortunately with the latest update to our application servers this causes issues...
application delivery
iRules
LTM
ltm policy
Stanislas_Piro2's avatar
Stanislas_Piro2
Icon for Cumulonimbus rankCumulonimbus
Apr 03, 2017

try this code which does the same as your irule (optimized):

 

when HTTP_REQUEST { 
     Rewrite the User-Agent header value to show up supported browser 
    switch -glob -- [string toupper [HTTP::header User-Agent]] {
        "*MSIE [6789]*" {
            HTTP::header replace "User-Agent" "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko" 
            log local0. "[HTTP::header User-Agent]" 
        }
        default {
        }
    }
}