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

Forum Discussion

Jonas_Kunze_392's avatar
Jonas_Kunze_392
Icon for Nimbostratus rankNimbostratus
Feb 28, 2011

BIG-IP no handler deny

Hello,     our BIG-IP 4.2 is not handling requests to the virtual servers properly. With b summary I see the counter "no handler deny" increasing on every request. The backend nodes don't see an...
management
monitoring
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Feb 28, 2011
Are you testing from the admin VLAN? Or maybe on a port other than 80? The virtual server is disabled on the admin VLAN and only listening on port 80.

 

 

Aaron