Q:

How do I determine the outgoing port being used by SSH after connecting? 

I have connected to a remote server using ssh:
ssh -i <keypair> <user@server>

How do I determine the outgoing port that my ssh client is using to connect to the remote server ?  
I want to know so that I can setup my VNC Client to use that port...
NOTE: I am not talking about the port on the remote server! 

A:

Look at the variable $SSH_CLIENT - the second number is the client port.