Forum Discussion

Cirrus

Dec 15, 2020

Irule help to block HTTP request if the HTTP Referer header value is null or with wrong domain

Hello Team, I'm in need of an Irule to block HTTP request if the HTTP Referer header value is null or with wrong domain address. Could you please help with an irule for this request? ...

application delivery

iRules

Enes_Afsin_Al

MVP

Dec 15, 2020

Hi Thiyagu,

* character is not wildcard in here.

Can you try that?

if {($referer ne "") && !($referer contains ".abc.com")}

Thiyagu
Cirrus
Dec 16, 2020
Hello aaa,
I have tried the below irule and it is not working. As far I know the the flow logic is correct and for some reason this irule is not working.

Could you please correct me if I' missing something here?

when HTTP_REQUEST
{

set referer [string tolower [HTTP::header value "Referer"]]

     if {($referer ne "") && !($referer contains ".abc.com")}
     {
     HTTP::respond 400 content "Bad Request" "Content-Type" "text/html"
     }

}

Regards,
Thiyagu