title: Are SSH destination and source ports identical (symmetric ports)?
body: <p>When I connect to SSH I use port 22 as destination, but when the reply comes back, does it come in on port 22 as well? Or is the client source port randomly assigned as in other TCP communication?</p>
  
  <p>If set up a firewall allowing outbound traffic to port 22 - Do I also need to allow incoming traffic on port 22?</p>