Bug ID 949477: NTLM RPC exception: Failed to verify checksum of the packet

Last Modified: Jan 25, 2021

Bug Tracker

Affected Product:  See more info
BIG-IP APM(all modules)

Known Affected Versions:
14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1

Opened: Sep 29, 2020
Severity: 3-Major

Symptoms

NTLM authentication fails with the error "RPC exception: Failed to verify checksum of the packet".

Impact

User authentication fails

Conditions

-- Start nlad process with "encryption". -- Configure a user and map that user to a huge number of groups. -- Configure NTLM front end authentication.

Workaround

Run "nlad" process with "-encrypt no" in the file /etc/bigstart/startup/nlad.

Fix Information

None

Behavior Change