Multi-hop SSH Tunnel with Two VPS Servers: S1 and S2 Setup
This article will guide you through the process of setting up a multi-hop SSH tunnel between two VPS servers, S1 and S2, using the NetMod SSH tool. This setup allows a local machine to access the internet through S2, with S1 acting as a middleman for the connection.
Prerequisites
- Two VPS servers, S1 and S2
- SSH access to both servers
- NetMod SSH tool installed on the local machine
Setting up S1
The first step is to set up S1 as a jump host. This involves creating an SSH key on the local machine and copying it to S1.
Creating an SSH Key
To create an SSH key, open a terminal on the local machine and run the following command:
ssh-keygen
This will create a new SSH key in the default location. You can use the default settings by pressing enter for each prompt.
Copying the SSH Key to S1
Next, copy the SSH key to S1 using the following command:
ssh-copy-id user@s1
Replace "user" with the username on S1 and "s1" with the IP address or hostname of S1.
Setting up S2
The next step is to set up S2 as the destination server. This involves creating an SSH key on S1 and copying it to S2.
Creating an SSH Key on S1
To create an SSH key on S1, run the following command:
ssh-keygen
This will create a new SSH key in the default location on S1. You can use the default settings by pressing enter for each prompt.
Copying the SSH Key to S2
Next, copy the SSH key from S1 to S2 using the following command:
ssh-copy-id user@s2
Replace "user" with the username on S2 and "s2" with the IP address or hostname of S2.
Setting up the Multi-hop SSH Tunnel
Now that both servers are set up, you can create the multi-hop SSH tunnel using the following command:
ssh -J user@s1 user@s2
This command will create an SSH tunnel from the local machine to S1, which will then forward the connection to S2. Once the connection is established, you can access the internet through S2.
- Create an SSH key on the local machine
- Copy the SSH key to S1
- Create an SSH key on S1
- Copy the SSH key from S1 to S2
- Create the multi-hop SSH tunnel using the following command: ssh -J user@s1 user@s2
References
This article covers the key concepts and steps for setting up a multi-hop SSH tunnel between two VPS servers, S1 and S2, using the NetMod SSH tool. By following the instructions provided, you should be able to access the internet through S2 from your local machine.