diff --git a/modules/tailscale.nix b/modules/tailscale.nix
index fb79ec7..c8540d5 100644
--- a/modules/tailscale.nix
+++ b/modules/tailscale.nix
@@ -1 +1,9 @@
-# TODO: Define Tailscale settings.
+{ ... }:
+
+{
+  services.tailscale.enable = true;
+
+  networking.firewall.trustedInterfaces = [
+    "tailscale0"
+  ];
+}