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

Forum Discussion

Richard_Guttrid's avatar
Richard_Guttrid
Icon for Nimbostratus rankNimbostratus
Apr 15, 2016

Can I use an LTM HTTP Monitor to monitor a DNS Entry?

Problem is that I have to use the F5 to Load balance outgoing internet traffic out of two firewalls. I've set up a group with both firewalls in it and a virtual server set as a Performance (Layer4) ...
application delivery
big-ip
Arie's avatar
Arie
Icon for Altostratus rankAltostratus
Apr 15, 2016

You should be able to do this with an external monitor. However, another option would be to create a helper-VIP on which you can then run an iRule that checks the remote location. The HTTP-monitor can then simply be pointed at this helper-VIP.