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

Forum Discussion

N_67263's avatar
N_67263
Icon for Nimbostratus rankNimbostratus
Aug 27, 2013

Difference between health monitor using "http" and "tcp port-80"

Folks,   The use case I have is we have a pool configured with 2 nodes in it and has the health monitor set as http. There was some testing going on on one of the nodes and the pool was showing as...
BIG-IP Access Policy Manager (APM)
management
security
JG's avatar
JG
Icon for Cumulonimbus rankCumulonimbus
Aug 27, 2013

Simply put, HTTP runs over TCP, and sucessful access on the TCP layer does not mean HTTP works as well, as is shown in your case.