hongry18/ssh.tunneling.md

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ssh.tunneling.md

SSH Tunneling

-L Option: Local Port Forwarding
-R Option: Remote Port Forwarding
-N: Do not execute a remote command

command

create single tunnel

ssh -N -LPort:host:Port2 user@host
ssh -N -RPort:host:Port2 user@host

create multiple tunnel

[user@local] ssh -L30001:localhost:30001 user@host1
[user@host1] ssh -L30001:localhost:30001 user@host2
[user@host2] ssh -L30001:localhost:22 user@host3

# single command
ssh -v -L30001:localhost:30001 user@host1 -t ssh -v -L30001:localhost:30001 user@host2 -t ssh -v -L30001:localhost:22 user@host1