where are sshd log files located?

Hi,

I am a novice user of openssh.  I apologize in advance for my silly question 
below, but recently I started having connection problems from my work 
computer to home computer via ssh.  I am trying to locate the ssh server's 
log files but I don't know where they are located.  /var/log/auth.log fails 
to log my logging attempts from work.  The error message that displays when I 
try to connect from work is "Connection refused".  I am able to login from my 
laptop to the server within my home network.  Yes, the server is behind a 
firewall/router but port forwarding is enabled.  Originally I was using the 
port #22 for sshd, but because of numerous attacks from all over the world I 
switched the server to a different port through sshd_config.  I was able to 
connect for a while after I made all these changes but a couple of days ago I 
realized this wasn't the case anymore.  I am also suspecting a block by my 
work IT department.  Is it possible to block my logging attempts from the 
client (work) part?

I am using Open SSH 4.3 as the server and WinSCP (last version) as the client 
at both my laptop and work computer.  Any input will be greatly appreciated.

Hakan

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