From 5c42f3583928f4d609c4e2e6bbafee398745c332 Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@hey.com>
Date: Wed, 16 Jul 2025 16:46:35 -0700
Subject: [PATCH] Install and enable ufw firewall by default

Gotta be safe out there!
---
 install/firewall.sh | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 install/firewall.sh

diff --git a/install/firewall.sh b/install/firewall.sh
new file mode 100644
index 0000000..d8a92ab
--- /dev/null
+++ b/install/firewall.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+if ! command -v ufw &>/dev/null; then
+  yay -Sy --noconfirm --needed ufw ufw-docker
+
+  # Allow nothing in, everything out
+  sudo ufw default deny incoming
+  sudo ufw default allow outgoing
+
+  # Allow ports for LocalSend
+  sudo ufw allow 53317/udp
+  sudo ufw allow 53317/tcp
+
+  # Allow SSH in
+  sudo ufw allow 22/tcp
+
+  # Allow Docker containers to use DNS on host
+  sudo ufw allow in on docker0 to any port 53
+
+  # Turn on the firewall
+  sudo ufw enable
+  sudo ufw reload
+fi