FR-SSH_PortForwarding

Remote Traffic to Localhost -> Ex: Curl to Burp

Tunnel Establishment:
ssh -fNT -R 8080:localhost:8080 username@IP

Test Run:
curl -svk https://www.google.com -x http://localhost:8080

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Local Traffic to Remote Server -> Ex: Access_WebApp -> WebServer

Tunnel Establishment:
ssh -fNT -L 8080:localhost:8080 username@IP

Test Run:
Use browser to access the application running on remote -> http://localhost:8080

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Checking Tunnel Alive -> Try on Remote Server

nc -z localhost PORT || echo "no tunnel open"
netstat -lpnt | grep PORT

    t: TCP
    p: show process
    l: listening
    n: numeric values

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Run python server in Local -> python -m http.server (8000 Default Port)
Try to Connect from remote server using curl or telnet
telnet localhost PORT
Curl localhost:PORT