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How to ssh tunnel in linux

How to ssh port forwarding ( ssh tunneling) in linux.
For example,
Client [localhost:10000] ---> Server 1 [port:1111]----->Server 2 [port:22]
Server 1
ip address: 192.168.1.12
port: 1111

Server 2
ip address: 192.168.1.13
port: 22

How to ssh tunnel in linux


From client, how to login ssh to Server2 via Server1.
ssh -p 1111 -f [email protected] -L 10000:[email protected]:22  -N
ssh -p 10000 [email protected]
From client, how to copy files to Server2?
scp -r -P 10000 /path/to/file [email protected]:/path/to/folder

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