fix groups/default.nix should be groups/all/default.nix

groups/server/default.nix

@@ -1,19 +1,8 @@
 {lib, ...}: {
-  networking = {
-    networkmanager.enable = true;
-
-    # Use CloudFlare's WARP+ 1.1.1.1 DNS service
-    nameservers = [
-      "1.1.1.1"
-      "1.0.0.1"
+  networking.firewall = {
+    allowedTCPPorts = [
+      22
     ];
-
-    firewall = {
-      enable = lib.mkDefault true;
-      allowedTCPPorts = [
-        22
-      ];
-    };
   };
 
   security = {
@@ -29,7 +18,7 @@
     };
     # allow SSH keys for passwordless auth
     pam = {
-      enableSSHAgentAuth = true;
+      sshAgentAuth.enable = true;
       services.sudo.sshAgentAuth = true; # pam_ssh_agent_auth module
     };
   };
@@ -41,7 +30,7 @@
       settings = {
         PasswordAuthentication = false;
         PermitRootLogin = "no";
-        # AllowUsers = ["cry"]; # DO NOT ALLOW ALL
+        AllowUsers = ["cry"]; # DO NOT ALLOW ALL
         UseDns = true;
         X11Forwarding = false;
       };