Allow Calibre wireless connections

modules/networking.nix

@@ -69,4 +69,14 @@
     };
     routes = [{ routeConfig.Destination = "10.8.0.1"; }];
   };
+
+  # Firewall configuration
+  networking.firewall = {
+    allowedTCPPorts = [
+      9090 # Calibre Wireless
+    ];
+    allowedUDPPorts = [
+      54982 # Calibre Wireless
+    ];
+  };
 }