diff --git a/common/pc/default.nix b/common/pc/default.nix
index a240a0d..0c26ffa 100644
--- a/common/pc/default.nix
+++ b/common/pc/default.nix
@@ -53,6 +53,7 @@ in
       joplin-desktop
       config.inputs.deploy-rs.packages.${config.currentSystem}.deploy-rs
       lxqt.pavucontrol-qt
+      barrier
 
       # For Nix IDE
       nixpkgs-fmt
diff --git a/machines/ray/default.nix b/machines/ray/default.nix
index b3c80b1..701f320 100644
--- a/machines/ray/default.nix
+++ b/machines/ray/default.nix
@@ -56,4 +56,9 @@
 
   de.enable = true;
   de.touchpad.enable = true;
+
+  networking.firewall.allowedTCPPorts = [
+    # barrier
+    24800
+  ];
 }