ufw-Uncomplicated Firewall

基本指令

Check Status of UFW

sudo ufw status verbose

Enable UFW

sudo ufw enable

Deny Incoming Connections

sudo ufw deny from 123.123.123.123

Allow Specific Incoming Connections

sudo ufw allow http
sudo ufw allow ssh
sudo ufw allow 8080
sudo ufw allow 5060:5061/tcp

Set up Default Policies

sudo ufw default deny incoming
sudo ufw default allow outgoing

Reference

• ufw：簡易防火牆設置