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Useful for when you need to have two hosts talk to each other on a specific port but they're both NATed (behind routers). | |
For example, you want to be able to SSH into your friend's machine to pair program with them. | |
remote$ ssh -R 55555:localhost:22 myaccount@my_ssh_server.com | |
local$ ssh -L 55555:localhost:55555 myaccount@my_ssh_server.com | |
local$ ssh -p 55555 localhost -l remote_user |