SSH – How to Create Tunnel Over Multiple Hops Using PuTTY

puttysshtunnel

I have these config:
Host with putty — > Gateway A (port 22 open) –> FinalMachine (port 22 with gateway A open and port 18080 with apache).

Like I don't have communication from Host with putty with FinalMachine I would like to tunneling the connection to can connect directly from Host to 18080 of FinalMachine.

I'm trying to do with putty but I can't find the solution.
Anyone could help me please? Thanks!

Best Answer

Method 1, using 2 instances of putty

Putty 1: Local forward 20022:GatewayB:22, Connect to GatewayA
Putty 2: Local forward 18080:FinalMachine:18080, Connect to localhost:20022

Method 2:

Putty Local forward 18080:127.0.0.1:18080,
- From within session do next step ssh -L 18080:FinalMachine:18080 GatewayB

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SSH Tunnel using PuTTY no longer works after server change

At rwired's request, I'm reposting my previous comment as an answer, which was:

Can the remote Linux server establish outbound connections to TCP port 80? For instance, if you "telnet www.google.com 80" from the server, do you get "Connection established"? Or does it just hang?

The intended implication was that something is blocking the outbound connection, which rwired discovered was indeed the case.

Ssh – Putty double tunnel

"What i need is to be able to call from server B localhost:xx and forward it to MyPc:xx"

First session to server_A: a.example.com:22

 L22000 b.example.com:22

Second session to server_B (via tunnel from first session): localhost:22000

 L8080 localhost:8080

The end effect is MyPC:8080 <-> b.example.com:8080

Best Answer

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SSH Tunnel using PuTTY no longer works after server change

Ssh – Putty double tunnel

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