What is tunneling SSH?

Question

SSH tunneling, or SSH port forwarding, is a method of transporting arbitrary data over an encrypted SSH connection. SSH tunnels allow connections made to a local port (that is, to a port on your own desktop) to be forwarded to a remote machine via a secure channel.

Why do we need SSH tunneling?

SSH tunneling is a method to transport additional data streams within an existing SSH session. SSH tunneling helps achieve security use cases such as remote web service access without exposing port on the internet, accessing server behind NAT, exposing local port to the internet.

Is SSH tunneling a VPN?

The traffic between your computer and the SSH server is encrypted, so you can browse over an encrypted connection as you could with a VPN. However, an SSH tunnel doesn't offer all the benefits of a VPN. Unlike with a VPN, you must configure each application to use the SSH tunnel's proxy.

What is difference between port forwarding and tunneling?

port forwarding can be performed using only the data available in the network packet envelope. Tunneling requires inspection of the data inside the packet (at least to establish the tunnel). port forwarding is 'stateless' in the sense that all data matching the rules is forwarded.

What is tunneling in PuTTy?

PuTTy is a user-friendly SSH client for the Windows system. Most of the Linux system users are aware and use to connect remote system running SSH server. It also provides you option to create SSH tunnel to provide access to resource within the trusted internal network.

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