Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

gimlie_382872's avatar
gimlie_382872
Icon for Nimbostratus rankNimbostratus
Apr 04, 2019

Can we read DataGroup form external file via iRule

Hi expert, I'have internal server and provide url list. i would like to use ltm block access to url if match in datagroup. I create cronjob and shell script to download url form internal server. Bu...
application delivery
irules
LTM
youssef1's avatar
youssef1
Icon for Cumulonimbus rankCumulonimbus
Apr 04, 2019

Hi,

So first of create your DG "dg-uri-restriction":

  • type string
  • string: /uri
  • value: not needed in your case.

Then create your irule, it's simple:

 when HTTP_REQUEST {
 set userip [HTTP::uri]
 if { [class match $userip equals dg-uri-restriction] } {
    HTTP::respond 403 content "Forbidden" "Content-Type" "text/html" "Connection" "Close"
    return
     you can also use reject...
 }
 }