How to deny all incoming ports except FTP port 20 and 21 on Ubuntu 18.04 Bionic Beaver Linux

Objective

The objective is to enable UFW firewall, deny all incoming ports however only allow FTP port 20 and 21 on Ubuntu 18.04 Bionic Beaver Linux

Operating System and Software Versions

  • Operating System: – Ubuntu 18.04 Bionic Beaver

Requirements

Privileged access to your Ubuntu 18.04 Bionic Beaver will be required.

Difficulty

EASY

Conventions

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