diff --git a/common/default.nix b/common/default.nix
index c1935e7..9a0b251 100644
--- a/common/default.nix
+++ b/common/default.nix
@@ -7,6 +7,7 @@ in {
     ../modules
     ./users.nix
     (sources.home-manager + "/nixos")
+    (sources.pbb-nixfiles + "/modules/nftables")
   ];
 
   boot.kernelPackages = lib.mkDefault pkgs.linuxPackages_latest;
@@ -77,4 +78,6 @@ in {
   services.nginx.appendHttpConfig = ''
     access_log off;
   '';
+
+  petabyte.nftables.enable = true;
 }
diff --git a/hosts/hainich/services/codimd.nix b/hosts/hainich/services/codimd.nix
index 55ed5dd..c60f2df 100644
--- a/hosts/hainich/services/codimd.nix
+++ b/hosts/hainich/services/codimd.nix
@@ -7,7 +7,7 @@
     localAddress = "192.168.100.3";
     autoStart = true;
     config = { config, lib, pkgs, ... }: {
-      networking.firewall.allowedTCPPorts = [ 3000 ];
+      networking.firewall.enable = false;
       services.coredns = {
         enable = true;
         config = ''
diff --git a/hosts/hainich/services/lantifa.nix b/hosts/hainich/services/lantifa.nix
index 06746af..4fd1eed 100644
--- a/hosts/hainich/services/lantifa.nix
+++ b/hosts/hainich/services/lantifa.nix
@@ -11,7 +11,7 @@ in {
 
     config = {config, pkgs, ... }: {
       networking.hosts."::1" = [ "wiki.lantifa.org" ];
-      networking.firewall.allowedTCPPorts = [ 80 ];
+      networking.firewall.enable = false;
       users.users.mediawiki.extraGroups = [ "keys" ];
 
       services.mediawiki = {
diff --git a/nix/sources.json b/nix/sources.json
index 3c43a43..9cadc80 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -67,5 +67,11 @@
         "type": "tarball",
         "url": "https://github.com/hexchen/nixpkgs/archive/b5f7683f8d7f99186dd4232f233d17ce1abd4e17.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
+    "pbb-nixfiles": {
+        "ref": "main",
+        "repo": "https://git.petabyte.dev/petabyteboy/nixfiles.git",
+        "rev": "0720c5dba283d782f2f887bf97aad339137d95dc",
+        "type": "git"
     }
 }