feature(ssh): add more security to the ssh config

Reviewed-on: #20

flake.lock

@@ -28,11 +28,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1771037579,
-        "narHash": "sha256-NX5XuhGcsmk0oEII2PEtMRgvh2KaAv3/WWQsOpxAgR4=",
+        "lastModified": 1771519029,
+        "narHash": "sha256-H59Qf82wv5kBXVoyXsmUKW+9J3o8FqgY4uKaLdsLdLg=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "05e6dc0f6ed936f918cb6f0f21f1dad1e4c53150",
+        "rev": "167e0b6837115e672ec5f58e2b0ea39093abe807",
         "type": "github"
       },
       "original": {
@@ -43,11 +43,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1771008912,
-        "narHash": "sha256-gf2AmWVTs8lEq7z/3ZAsgnZDhWIckkb+ZnAo5RzSxJg=",
+        "lastModified": 1771369470,
+        "narHash": "sha256-0NBlEBKkN3lufyvFegY4TYv5mCNHbi5OmBDrzihbBMQ=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "a82ccc39b39b621151d6732718e3e250109076fa",
+        "rev": "0182a361324364ae3f436a63005877674cf45efb",
         "type": "github"
       },
       "original": {
@@ -66,11 +66,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1771023756,
-        "narHash": "sha256-sTj1hrPT7D4oGHaQQzwDeqyZBwnxYc+T7yceyQc4sy4=",
+        "lastModified": 1771135771,
+        "narHash": "sha256-wyvBIhDuyCRyjB3yPg77qoyxrlgQtBR1rVW3c9knV3E=",
         "owner": "nix-community",
         "repo": "nixvim",
-        "rev": "4c63aa76be59b49ae89892ae803005afd4a400cd",
+        "rev": "ed0424f0b08d303a7348f52f7850ad1b2704f9ba",
         "type": "github"
       },
       "original": {
@@ -86,11 +86,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1771070710,
-        "narHash": "sha256-YXlzszEiGisJzsy5SlB3kURJO2c8LEN8lOjABOa1L0o=",
+        "lastModified": 1771513929,
+        "narHash": "sha256-dPeHevAT1Cb2w/Wrfz/d5i6RfO8bvbGl/KrTPxU2l3w=",
         "owner": "noctalia-dev",
         "repo": "noctalia-shell",
-        "rev": "0647a12e2ef0aed8a135c60d6e4da612580a7cf8",
+        "rev": "9c47ce03f200e0b8fc515d973440d5bc3e359785",
         "type": "github"
       },
       "original": {

modules/nixos/openssh.nix

@@ -5,5 +5,15 @@
   services.openssh = {
     enable = true;
     openFirewall = true;
+    ports = [ 666 ];
+
+    settings = {
+      AuthenticationMethods = "publickey";
+      KbdInteractiveAuthentication = false;
+      MaxAuthTries = 5;
+      PasswordAuthentication = false;
+      PermitRootLogin = "no";
+      X11Forwarding = false;
+    };
   };
 }