Security updates

configuration.nix

@@ -14,6 +14,7 @@
     ./modules/packages.nix
     ./modules/hardware.nix
     ./modules/services.nix
+    ./modules/security.nix
     ./modules/aliases.nix
   ];
 

modules/networking.nix

@@ -6,10 +6,17 @@ in
 {
   networking.hostName = settings.hostname;
 
-  # Enable networking
   networking.networkmanager.enable = true;
 
-  # Open ports in the firewall.
+  networking.firewall.enable = true;
-  # networking.firewall.allowedTCPPorts = [ ... ];
+
-  # networking.firewall.allowedUDPPorts = [ ... ];
+  networking.firewall.allowedTCPPorts = [ 
+    # Sunshine
+    47984 47989 48010 
+  ];
+
+  networking.firewall.allowedUDPPorts = [ 
+    # Sunshine
+    47998 47999 48000 48010 
+  ];
 }

modules/packages.nix

@@ -41,16 +41,19 @@
       nodePackages."pnpm"
       openssl
       ffmpeg
-      beta.zed-editor
+      zed-editor
       usbutils
       qmk-udev-rules
       qmk
       ghostty
+      beta.dbeaver-bin
+      neofetch
 
       # Desktop applications
       bitwarden-desktop
       vlc
       streamrip
+      cider-2
       zotero
       prismlauncher
       lrcget

modules/security.nix

@@ -0,0 +1,27 @@
+{ config, pkgs, ... }:
+
+{
+  security.sudo.execWheelOnly = true;
+  
+  nix.settings.allowed-users = [ "@wheel" ];
+
+  security.apparmor.enable = true;
+
+  security.audit.enable = true;
+  security.auditd.enable = true;
+
+  services.fail2ban.enable = true;
+
+  boot.kernel.sysctl = {
+    "kernel.dmesg_restrict" = 1;
+    "net.ipv4.conf.all.log_martians" = 1;
+    "net.ipv4.conf.default.log_martians" = 1;
+    "net.ipv4.icmp_echo_ignore_broadcasts" = 1;
+    "net.ipv4.conf.all.accept_redirects" = 0;
+    "net.ipv4.conf.default.accept_redirects" = 0;
+    "net.ipv6.conf.all.accept_redirects" = 0;
+    "net.ipv6.conf.default.accept_redirects" = 0;
+    "net.ipv4.conf.all.send_redirects" = 0;
+    "net.ipv4.conf.default.send_redirects" = 0;
+  };
+}

modules/services.nix

@@ -2,7 +2,12 @@
 
 {
   # Enable the OpenSSH daemon
-  services.openssh.enable = true;
+  services.openssh = {
+    enable = true;
+    settings = {
+      PermitRootLogin = "no";
+    };
+  };
 
   # Tailscale
   services.tailscale.enable = true;