Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP (all modules)
Known Affected Versions:
11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5
Fixed In:
12.0.0, 11.6.0 HF6, 11.5.2
Opened: Oct 01, 2014 Severity: 3-Major
When a BIG-IP system has an APM Limited license, NTLM is silently disabled and the connection goes through. This breaks many (all) use-cases for Exchange + APM.
Exchange cannot be used with APM Limited license when NTLM frontend authentication is selected, which is used in essentially all APM + Exchange deployments.
APM and Exchange are deployed together with APM Limited / Lite license.
None
The NTLM frontend authentication (ECA) feature can now be used with an APM Limited license. Typically, this is for Exchange deployments.