Originally Posted by alecz20
There is no such file on my CentOS 5 server.
My advice would be to grep about in /var/log to see what you can find, e.g.:
grep -lri sshd /var/log
grep -lri someusername /var/log
This should give you an idea of where to look. On my CentOS system the files of interest would be /var/log/secure* and /var/log/audit/audit.log*