ssh tunnel
1. generate ssh-key and upload public key to server, confirm passwordly ssh
2. ssh -f shawn@xxx.com -L 11111:xxx.com:222222 -N
3. connect to localhost:11111
ssh passwordless
ssh-keygen
ssh-copy-id shawn@xxx.xxx.xxx.xxx
ssh tunnel
1. generate ssh-key and upload public key to server, confirm passwordly ssh
2. ssh -f shawn@xxx.com -L 11111:xxx.com:222222 -N
3. connect to localhost:11111
ssh passwordless
ssh-keygen
ssh-copy-id shawn@xxx.xxx.xxx.xxx