diff --git a/flake.nix b/flake.nix
index 8c86668..4afb27a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -44,7 +44,6 @@
           ./machines
           ./routers
           ./inventories
-          ./overlays
           ./modules/clan/flake-module.nix
           ./modules/nixos/flake-module.nix
         ];
diff --git a/lib/default.nix b/lib/default.nix
deleted file mode 100644
index d370082..0000000
--- a/lib/default.nix
+++ /dev/null
@@ -1,11 +0,0 @@
-final: prev:
-let
-  callLibs = file: import file { lib = prev; };
-in
-{
-  lib = prev.lib.extend (
-    finalLib: prevLib: {
-      getInterface = callLibs ./zerotier-interface.nix { };
-    }
-  );
-}
diff --git a/modules/clan/phonebox/default.nix b/modules/clan/phonebox/default.nix
index 815a854..d97328b 100644
--- a/modules/clan/phonebox/default.nix
+++ b/modules/clan/phonebox/default.nix
@@ -25,6 +25,7 @@
           {
             lib,
             config,
+            pkgs,
             ...
           }:
           let
@@ -183,8 +184,11 @@
             ];
             networking.firewall.interfaces =
               let
+                matchAll = if !config.networking.nftables.enable then "zt+" else "zt*";
               in
-              { };
+              {
+                "${matchAll}".allowedTCPPorts = [ 80 ];
+              };
 
             services.asterisk = {
               enable = lib.mkDefault true;
diff --git a/overlays/default.nix b/overlays/default.nix
deleted file mode 100644
index d0d24c1..0000000
--- a/overlays/default.nix
+++ /dev/null
@@ -1,6 +0,0 @@
-{ ... }:
-{
-  flake.overlays = {
-    libsOverlay = import ../lib/default.nix;
-  };
-}