How-to: Activate Verbose Logging of the Authentication Process in Firefox

How to Activate Verbose Logging of the Authentication Process in Firefox

Environment

Firefox running on a Linux operating system

1. Preparation

Close all instances of Firefox and make sure (ie with ps) there is no Firefox process running.

2. Configuration

Open a terminal window and enter the following commands:

   export NSPR_LOG_MODULES=negotiateauth:5
   export NSPR_LOG_FILE=/tmp/firefox-auth.log

3. Using

Restart Firefox from that shell and start browsing.
Information about the authentication process will be logged to the file /tmp/firefox-auth.log