Can not find syslogs

I've been trying to drill down beyond the level of detail the VPN report gives (to get the raw event logs and timestamps, plus events during the VPN session).

But when I look in the archive directory and unzip the files for the timeframes, I can't find the syslog messages that produced the VPN report information I do have.

Example:

The VPN report says that in a timeframe in October a particular username logged in several times. Looking through the entire October timeframe of raw logs, I can't see any reference to that username in any syslog message though I can see syslog messages right through the timeframe and other login messages...

I'm Really Confused.

Anyone got a suggestion where I might be able to find the log entries relating to that login?

Thanks,

Ricard Kelly
Intrical Limited