How to Install Sish on Ubuntu Server Latest

Introduction

Sish is a secure, simple, and transparent way to connect to SSH servers through firewalls, NATs, or proxies. It allows you to access your SSH server securely from anywhere without configuring complex port forwarding or tunneling rules. In this tutorial, we will show you how to install Sish on Ubuntu Server Latest.

Prerequisites

Before you begin with this tutorial, make sure that you have:

  • An Ubuntu Server Latest installation
  • A non-root user with sudo privileges

Step 1: Install Go

Sish is written in Go. Therefore, you need to install the Go programming language on your Ubuntu server.

  1. Update the package index using the following command:
sudo apt update
  1. Install the Go programming language using the following command:
sudo apt install golang-go
  1. Verify the Go installation using the following command:
go version

The output should display the installed Go version.

Step 2: Install Sish

Now that you have installed Go, you can proceed to install Sish on your Ubuntu server.

  1. Clone the Sish repository using the following command:
git clone https://github.com/antoniomika/sish.git
  1. Change the directory to the Sish repository using the following command:
cd sish
  1. Build the Sish binary with the following command:
go build
  1. Install Sish using the following command:
sudo make install

Step 3: Configure Sish

After the installation, you need to configure Sish to start automatically and enable the Sish service.

  1. Create a Sish configuration directory using the following command:
sudo mkdir -p /etc/sish
  1. Copy the sample Sish configuration file to the Sish configuration directory using the following command:
sudo cp ./sish.yaml /etc/sish/
  1. Edit the Sish configuration file using the following command:
sudo nano /etc/sish/sish.yaml

Configure the parameters according to your needs. For example, you can change the following parameters:

  • listen: The listen address and port for the Sish server (default: 0.0.0.0:22).
  • timeout: The maximum idle time before closing the connection (default: 3m).
  • ssh_server: The SSH server host and port (default: localhost:22).
  • auth_keys_file: The SSH authorized keys file location (default: ~/.ssh/authorized_keys).
  1. Create a Sish service file using the following command:
sudo nano /etc/systemd/system/sish.service
  1. Add the following content to the service file:
[Unit]
Description=Sish SSH Tunneler
After=network.target

[Service]
ExecStart=/usr/local/bin/sish --config /etc/sish/sish.yaml
Restart=always
User=root

[Install]
WantedBy=multi-user.target

  1. Save and close the service file.

  2. Reload the systemd daemon using the following command:

sudo systemctl daemon-reload
  1. Enable the Sish service using the following command:
sudo systemctl enable sish.service
  1. Start the Sish service using the following command:
sudo systemctl start sish.service

Step 4: Test Sish

Now that you have installed and configured Sish, you can test it by connecting to your SSH server through the Sish server.

  1. Open a new terminal on your local machine.

  2. Install the Sish client using the following command:

sudo apt install sish-client
  1. Connect to the Sish server using the following command:
sish tunnel

  1. Enter your SSH server credentials.

  2. Once connected, you can access your SSH server through the Sish server using the following command:

ssh <username>@localhost -p <sish_port>

Replace <username> with your SSH server username and <sish_port>with the Sish server port specified in the listen parameter in the Sish configuration file.

Conclusion

Congratulations! You have successfully installed and configured Sish on your Ubuntu server. You can now access your SSH server securely from anywhere without configuring complex port forwarding or tunneling rules.