Knowledge Base

What is Termius and What Does It Do?

Termius is a multi-platform and advanced SSH and Telnet client that runs on various platforms such as iOS, Android, macOS, Windows, and Linux. Basically, it allows you to securely connect to and manage remote servers. It not only offers basic SSH functionality but also provides a range of additional features and conveniences.

• Secure Connection: It encrypts your data using the SSH (Secure Shell) protocol and provides a secure connection. This is especially important when working on public networks.
• Multi-Platform Support: It offers the same interface and functionality across different operating systems. This ensures consistency when switching between different devices.
• Synchronization: You can synchronize your accounts, servers, and snippets across all your devices. This helps you keep your configuration up to date everywhere.
• Advanced Features: It offers port forwarding, auto-completion, snippets, cloud synchronization, and many more advanced features.
• User-Friendly Interface: It has a modern and intuitive interface, making it easy to use for both beginners and experienced users.

Real-Life Example: A system administrator can use Termius to securely connect to servers in different geographical locations, troubleshoot issues, and perform updates. Thanks to cloud synchronization, all server configurations and credentials are always up to date.

How to Install and Configure Termius?

Installing and configuring Termius is quite simple. You can start by following the steps below:

1. Download: Download Termius from the official website (termius.com) or from your respective app store (App Store, Google Play Store, Microsoft Store, etc.).
2. Installation: Run the downloaded file and follow the installation instructions. The installation usually takes a few minutes.
3. Account Creation: When you launch Termius for the first time, you will be prompted to create an account or log in with an existing account. You can create a free account, but you may consider a premium subscription for more features.
4. Adding a Server: Use the "New Host" option to add the server you want to connect to. Enter the server address, username, and authentication method (password or SSH key).
5. Configuring Settings: Configure the settings according to your preferences. For example, you can change the font size, color scheme, and keyboard shortcuts.

Important Note: Authentication using an SSH key is more secure than using a password. You can follow the steps below to create an SSH key and upload it to your server:

1. Create SSH Key: Run the following command in your terminal:

   ssh-keygen -t rsa -b 4096

2. Copy Key to Server: Use the following command to copy the generated key to your server (replace your username and server address):

   ssh-copy-id username@serveraddress

3. Use Key in Termius: In Termius, select the SSH key you created in the "Identity" section of the server settings.

How to Manage SSH Keys in Termius?

SSH keys are the most effective way to securely connect to servers. Termius offers various options for managing SSH keys:

• Key Generation: You can create a new SSH key within Termius. This allows you to securely store and manage your keys.
• Key Import: You can import your existing SSH keys into Termius. This allows you to easily transfer keys you use in other SSH clients to Termius.
• Key Export: You can export SSH keys stored in Termius. This allows you to back up your keys or use them on other devices.
• Key Synchronization: Termius can synchronize your keys across all your devices. This allows you to keep your keys up to date at all times and connect to servers from any device.

Step-by-Step Key Import:

1. Open the Termius application.
2. Go to the "Keys" section.
3. Click the "+" (Add) button.
4. Select the "Import Key" option.
5. Select your key file or paste the key content.
6. Give your key a name and save it.

How to Do Port Forwarding in Termius?

Port forwarding is a technique that allows you to forward a local port to a port on a remote server. This is especially useful for accessing services behind firewalls or creating a secure tunnel.

To do port forwarding in Termius, follow these steps:

1. Open Server Settings: Open the settings of the server for which you want to perform port forwarding.
2. Go to Port Forwarding Section: Find a section under the heading "Port Forwarding" or similar.
3. Add a New Forwarding: Click the "+" (Add) button to add a new port forwarding rule.
4. Enter Forwarding Information:
   • Type: Select the forwarding type (Local, Remote, or Dynamic).
   • Local Port: Enter the port to listen on your local machine.
   • Remote Host: Enter the address of the remote server to which the connection will be forwarded.
   • Remote Port: Enter the port on the remote server to which the connection will be forwarded.
5. Save: Save the forwarding rule.

Example: To forward port 8080 on your local machine to port 80 on the remote server, you can use the following settings:

• Type: Local
• Local Port: 8080
• Remote Host: localhost (or the server's IP address)
• Remote Port: 80

With this configuration, when you go to http://localhost:8080 in your browser, you will access port 80 on the remote server.

How to Use Snippets in Termius?

Snippets are a useful feature that allows you to save time by saving frequently used commands or texts. Termius allows you to easily create, edit, and use snippets.

To use snippets, follow these steps:

1. Go to Snippets Section: Find a section under the heading "Snippets" in the Termius application.
2. Create a New Snippet: Click the "+" (Add) button to create a new snippet.
3. Enter Snippet Information:
   • Name: Give your snippet a name.
   • Content: Enter the content of the snippet (command or text).
4. Save: Save the snippet.

Using the Snippet:

1. Open a terminal session.
2. To invoke the snippet, type the name of the snippet and press the "Tab" key.
3. The content of the snippet will be automatically added to the terminal.

Example: You can create a snippet to check the disk space on your server:

• Name: disk_space
• Content: df -h

After creating this snippet, when you type "disk_space" in the terminal and press the "Tab" key, the df -h command will be executed automatically.

What are the Differences Between Termius' Paid and Free Versions?

Termius offers both free and paid (premium) versions. While the free version is sufficient for basic SSH functionality, the premium version offers more features and benefits.

Key Points:

• Free Version: Suitable for basic SSH connections and basic synchronization.
• Premium Version: Ideal for professional users who need more connections, advanced synchronization, unlimited snippets, and priority support.

Common Problems and Solutions with Termius

You may encounter some common problems while using Termius. Here are some of these problems and their solutions:

Case Study: A user was experiencing connection problems in Termius. It was determined that the problem was caused by the firewall blocking SSH connections. The problem was resolved after the firewall settings were updated.