Contents:

1. ufw Setup
2. ufw Commands
3. List and Delete
4. gufw

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ufw

The Uncomplicated Firewall (ufw) is a frontend for iptables and is particularly well-suited for host-based firewalls. ufw provides a framework for managing netfilter, as well as a command-line interface for manipulating the firewall. ufw aims to provide an easy to use interface for people unfamiliar with firewall concepts, while at the same time simplifies complicated iptables commands to help an administrator who knows what he or she is doing. ufw is an upstream for other distributions and graphical frontends.

ufw Setup

1. Enable IPv6
2. Set Up Default Policies
3. Allow SSH Connections
4. Enabling UFW
5. Allow Any Other Required Connections
6. Denying Connections
7. Deleting Firewall Rules
8. Check UFW Status and Rules
9. How to Disable or Reset Firewall on Ubuntu

ufw Commands

• ufw status - Check the status of the UFW firewall.
• ufw enable - Enable the UFW Firewall.
• ufw allow - Allow port/service through the UFW firewall.
• ufw deny - Drop the connection from a specific port/service on the UFW firewall.
• ufw status verbose - Get the detailed (verbose) status of the UFW firewall, which also includes logging levels.
• ufw status numbered - Shows UFW rules with numbers, which is helpful when you want to remove rules.
• ufw reject - Reject connection from specific port or service.
• ufw logging Change the logging level of the UFW firewall.
• ufw delete - Delete the UFW firewall rule.
• ufw reload - Reload the UFW firewall.
• ufw disable - Disable the UFW firewall.

List and Delete

gufw