Setting up a firewall on your VPS helps protect it from unauthorized access and attacks. Here’s how to do it:
- Use a firewall like UFW (Uncomplicated Firewall) or CSF (ConfigServer Security & Firewall).
- Allow only the necessary ports for your applications (e.g., SSH, HTTP/HTTPS).
- Deny all other traffic to reduce attack surfaces.
- Test your firewall to ensure it doesn’t block legitimate traffic.
Regularly review your firewall rules to stay secure.
