===== UFW (Uncomplicated Firewall) =====

**Installation:**
<code bash>sudo apt install ufw</code>

**Enable firewall:**
<code bash>ufw enable</code>

**Reload firewall:**
<code bash>ufw reload</code>

**Set default rules:**
<code bash>sudo ufw default deny incoming</code>
<code bash>sudo ufw default allow outgoing</code>

**Allow Port x via TCP/UDP:**
<code bash>ufw allow x/tcp</code>
<code bash>ufw allow x/udp</code>

**Allow several ports (from x to y via TCP):**
<code bash>ufw allow x:y/tcp</code>

**Allow application/service traffic:**
<code bash>ufw allow ssh</code>
<code bash>ufw allow http</code>

**Allow specific IP to specific port:**
<code>ufw allow from <IP address> to any port <port number></code>

**Show status:**
<code bash>ufw status verbose</code>

**Show status with numbered rules:**
<code bash>ufw status numbered</code>

//Sourced from [[https://phoenixnap.com/kb/configure-firewall-with-ufw-on-ubuntu|phoenixnap.com]]//