refactor, ssh changes

host/roam/services/networking.nix

@@ -0,0 +1,28 @@
+{ ... }:
+{
+  networking = {
+    enableIPv6 = true;
+
+    interfaces = {
+      "ens3".ipv6.addresses = [
+        {
+          address = "2a03:4000:3b:f99::";
+          prefixLength = 64;
+        }
+      ];
+    };
+
+    defaultGateway6 = {
+      address = "fe80::1";
+      interface = "ens3";
+    };
+
+    firewall = {
+      enable = true;
+      allowedTCPPorts = [
+        80
+        443
+      ];
+    };
+  };
+}

host/roam/services/security.nix

@@ -0,0 +1,9 @@
+{ ... }:
+{
+  security = {
+    acme = {
+      acceptTerms = true;
+      defaults.email = "acme@henri-dohmen.de";
+    };
+  };
+}

host/roam/services/services.nix

@@ -0,0 +1,40 @@
+{ config, ... }:
+let
+  headscale-domain = "headscale.hdohmen.de";
+in
+{
+  services = {
+    # TODO: maybe just use wireguard...
+    headscale = {
+      enable = true;
+      address = "127.0.0.1";
+      port = 8080;
+      settings = {
+        server_url = "https://${headscale-domain}";
+        prefixes.v4 = "100.10.11.0/24";
+        prefixes.v6 = "fd7a:115c:1011::/48";
+        dns = {
+          magic_dns = true;
+          base_domain = "net.hdohmen.de";
+        };
+      };
+    };
+
+    nginx = {
+      enable = true;
+      virtualHosts.${headscale-domain} = {
+        forceSSL = true;
+        enableACME = true;
+        locations."/" = {
+          proxyPass = "http://127.0.0.1:${toString config.services.headscale.port}";
+          proxyWebsockets = true;
+        };
+      };
+    };
+
+    openssh = {
+      enable = true;
+      settings.PasswordAuthentication = false;
+    };
+  };
+}