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

Forum Discussion

Daniel_Abrahams's avatar
Daniel_Abrahams
Icon for Nimbostratus rankNimbostratus
Feb 18, 2021

Require host header

Hi,   Is there a setting/iRule that makes it so that host header is required for clients to be able to connect to server. For example User enters https://www.test.com he will be able to connec...
BIG-IP Access Policy Manager (APM)
devops
iApps
Mayur_Sutare's avatar
Mayur_Sutare
Icon for MVP rankMVP
Feb 19, 2021

,

 

I am not sure if i fully understood you. Do you mean you have multiple virtual servers created using iApp and you want to allow specific hosts using iRule on each vServers. In that case, you need to attach iRule on each Vserver to work it. Or are you looking for the iRule where it should allow multiple hosts and block required ones? Please confirm! If my understanding is incorrect, please correct me!

 

Thanks

Daniel_Abrahams's avatar
Daniel_Abrahams
Icon for Nimbostratus rankNimbostratus
Feb 19, 2021

 

 

I would prefer only one iRule that matches the hostheader with the associated iapp/virtual server.

So if you take my previous example the iRule fetches the hostheader from the iapp/virtual server and then enters www.test.com as the host variable to be allowed and the IP 10.10.10.10 as the one to be rejected.

 

So you dont have to manually create one iRule per virtual server. and everything is done dynamically

 

Best regards

Daniel