UFW, or Uncomplicated Firewall, is a command-line firewall tool for Ubuntu 18.04 LTS servers. Here is an overview of the steps to set up a UFW firewall on an Ubuntu 18.
04 LTS server:
- Start by updating the package list:
sudo apt update
- Install the UFW package:
sudo apt install ufw
- Verify the firewall’s status:
sudo ufw status
- By default, UFW is set to deny all incoming connections and allow all outgoing connections. To allow all incoming connections, you can use the following command:
sudo ufw default allow incoming
- To allow incoming connections on a specific port, use the following command:
sudo ufw allow port_number
- To allow incoming connections for a specific service, use the following command:
sudo ufw allow service_name
- To deny incoming connections on a specific port, use the following command:
sudo ufw deny port_number
- To deny incoming connections for a specific service, use the following command:
sudo ufw deny service_name
- To enable the firewall, use the following command:
sudo ufw enable
- To check the firewall’s status and rules, use the following command:
sudo ufw status verbose
Note: Be careful when configuring UFW, as it can block access to your server if not set up properly. It’s a good practice to test your firewall rules before enabling it on a production server.
Note: These are just general steps, for more detailed and accurate information please refer to the official documentation of UFW and Ubuntu 18.04 LTS
UFW is a simple firewall tool that allows you to easily configure and manage firewall rules on Ubuntu 18.04 LTS servers. It provides various features like allow all incoming connections, deny all incoming connections, allow incoming connections on a specific port, deny incoming connections on a specific port, allow incoming connections for a specific service, and deny incoming connections for a specific service.