Converting SSH command to a PuTTY command

I am trying to translate the SSH command:

ssh -N -L 1521:server1.com:1521 [email protected]

into PuTTY.

• -N: Do not execute a remote command. This is useful for just forwarding ports (protocol version 2 only).
• -L [bind_address:]port:host:hostport: Specifies that the given port on the local (client) host is to be forwarded to the given host and port on the remote side.

The command first SSH to [email protected], which in turn connect to server1 so that it fowarrds port 1521 (server behind NAT).

In a more abstract way, the command could be written as:

ssh -L MY_LOCAL_PORT:FOREIGN_ADDRESS:FOREIGN_PORT MYUSER@SSH_SERVER

I tried to write the following PuTTY command:

putty -N -D 1521 -P 1521 server2.com [email protected]

with:

• -N: suppress starting a shell or command.
• -D: set up SOCKS-based dynamic port forwarding on a local port.
• -P: specify a port number

according to the PuTTY manual.

However I get:

What could be the issue?

I disabled the firewall, and checked that putty.exe allowed to communicate with Internet.

Using the PuTTY GUI, the tunnel works with the following configuration:

Solution 1:

I am trying to translate the SSH command ssh -N -L 1521:server1.com:1521 [email protected] into PuTTY.

If all you need is just forwarding port - you can use plink instead

> plink.exe -ssh -N -L 1521:server1.com:1521 [email protected]

I'd curious how to fix the putty.exe command as well

the same things

> G:\putty.exe -ssh -P 2222 -N -L :2222:192.168.88.130:2222 [email protected] -i C:\Users\ALex\.ssh\node1.ppk

Solution 2:

Putty requires the protocol to be mentioned as well. Since you are using ssh, add '-ssh' option as well. You can refer the following link :

putty command line options

So a simple command would look like:

putty.exe -ssh -P 22 admin@server