CentOS Stream 8
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OpenSSH : SSH Port Forwarding
2021/02/22
 
It's possible to forward a port to another port with SSH port forwarding.
[1] For example, set SSH Port Forwarding that requests to port [8081] on [dlp.srv.world (10.0.0.30)] are forwarded to port [80] on [node01.srv.world (10.0.0.51)].
# SSH login from source host to target host

[cent@dlp ~]$
ssh -L 10.0.0.30:8081:10.0.0.51:80 cent@node01.srv.world

cent@node01.srv.world's password:
[cent@node01 ~]$
# confirm state

[cent@node01 ~]$
ssh dlp.srv.world "ss -napt | grep 8081"

cent@dlp.srv.world's password:
LISTEN 0      128        10.0.0.30:8081       0.0.0.0:*     users:(("ssh",pid=26639,fd=6))

# listen on 8081

# keep this login session
[2] Verify to access to a port on source Host you set from any client Host, then target port on target Host replies.
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