Learn more about UFW rules on VPS from our experts. Our CyberPanel Support team is here to help you with your questions and concerns.

About UFW rules on VPS

The UFW, short for Uncomplicated Firewall is a user-friendly command-line tool. It offers a simple interface for managing firewall rules on Linux-based systems.

Additionally, it is used extensively on Virtual Private Servers (VPS) to boost security by controlling incoming and outgoing network traffic.

Did you know that we can define rules to allow or block specific connections as per different parameters while working with UFW on a VPS?

UFW uses a CLI interface with a few simple commands. Furthermore, it supports all the basic firewall rules, different network protocols, logging, as well as other features.

Although UFW is pre-installed with Ubuntu OS. We can still ensure we have the latest version with this command:

apt install ufw

Once we confirm we have the most recent version of UFW. We can check its status with this command:

ufw status

In most cases, UFW is inactive by default. However, we can easily enable it after we make a few changes.

First, we have to double-check the default firewall policies. This is done by opening the default configuration file of UFW.

nano /etc/default/ufw

Although UFW is configured to deny all incoming traffic and allow all outgoing traffic, we can easily change it with this command:

ufw default

For example, we can enable incoming traffic with:

ufw default allow incoming

Similarly, we can deny all outgoing traffic:

ufw default deny outgoing

Furthermore, we can allow incoming SSH connections with this command:

ufw allow ssh

When we run the above command, it opens port 22. However, if we have configured SSH to use another port, we have to specify it while running the above command.

For instance:

ufw allow 4422/tcp

Let us know in the comments if you need further help with UFS.

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Conclusion

To conclude, our Support Techs introduced us to UFW rules on VPS and how to use the CLI commands.