Update NixOS networking configuration

modules/networking.nix

@@ -1,19 +1,10 @@
 { ... }:
 
 {
-  networking.hostName = "nixos"; # Define your hostname.
-  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
-
-  # Configure network proxy if necessary
-  # networking.proxy.default = "http://user:password@proxy:port/";
-  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
-
-  # Enable networking
-  networking.networkmanager.enable = true;
-
-  # Open ports in the firewall.
-  # networking.firewall.allowedTCPPorts = [ ... ];
-  # networking.firewall.allowedUDPPorts = [ ... ];
-  # Or disable the firewall altogether.
-  # networking.firewall.enable = false;
+  networking.hostName = "nixos";
+  networking.wireless = { iwd = { enable = true; }; };
+  networking.firewall = {
+    enable = true;
+    allowedTCPPorts = [ 22 ];
+  };
 }