From 9ec2a403905b34d872f332cc7fb0aec305faa5f2 Mon Sep 17 00:00:00 2001
From: sinanmohd <sinan@sinanmohd.com>
Date: Sat, 3 Feb 2024 16:25:15 +0530
Subject: hosts/lia: init

---
 flake.nix                             |  2 +-
 hosts/lia/configuration.nix           | 11 ++++++++
 hosts/lia/hardware-configuration.nix  | 29 +++++++++++++++++++++
 hosts/lia/modules/network/default.nix | 19 ++++++++++++++
 hosts/lia/modules/network/router.nix  | 47 +++++++++++++++++++++++++++++++++++
 hosts/lia/modules/users.nix           |  5 ++++
 6 files changed, 112 insertions(+), 1 deletion(-)
 create mode 100644 hosts/lia/configuration.nix
 create mode 100644 hosts/lia/hardware-configuration.nix
 create mode 100644 hosts/lia/modules/network/default.nix
 create mode 100644 hosts/lia/modules/network/router.nix
 create mode 100644 hosts/lia/modules/users.nix

diff --git a/flake.nix b/flake.nix
index 7b865fb..2749aed 100644
--- a/flake.nix
+++ b/flake.nix
@@ -26,6 +26,6 @@
     );
   in
   {
-    nixosConfigurations = makeX86 [ "cez" "kay" "fscusat" "dspace" ];
+    nixosConfigurations = makeX86 [ "cez" "kay" "lia" "fscusat" "dspace" ];
   };
 }
diff --git a/hosts/lia/configuration.nix b/hosts/lia/configuration.nix
new file mode 100644
index 0000000..1b5a926
--- /dev/null
+++ b/hosts/lia/configuration.nix
@@ -0,0 +1,11 @@
+{ ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+    ../../common.nix
+    ./modules/network
+    ./modules/users.nix
+  ];
+}
+
diff --git a/hosts/lia/hardware-configuration.nix b/hosts/lia/hardware-configuration.nix
new file mode 100644
index 0000000..6f4c6a4
--- /dev/null
+++ b/hosts/lia/hardware-configuration.nix
@@ -0,0 +1,29 @@
+{ modulesPath, ... }:
+
+{
+  imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
+
+  boot = {
+    loader.grub = {
+      enable = true;
+      device = "/dev/sda";
+    };
+
+    kernelModules = [ "kvm-intel" ];
+    initrd.availableKernelModules = [
+      "uhci_hcd"
+      "ehci_pci"
+      "ata_piix"
+      "hpsa"
+      "usb_storage"
+      "usbhid"
+      "sd_mod"
+      "sr_mod"
+    ];
+  };
+
+  fileSystems."/" = {
+    device = "/dev/disk/by-uuid/99fc38a8-9003-4ae2-98f4-e08afd9b4114";
+    fsType = "ext4";
+  };
+}
diff --git a/hosts/lia/modules/network/default.nix b/hosts/lia/modules/network/default.nix
new file mode 100644
index 0000000..927b2b5
--- /dev/null
+++ b/hosts/lia/modules/network/default.nix
@@ -0,0 +1,19 @@
+{ ... }: let
+  wan = "enp4s0f2";
+in
+{
+  imports = [
+    ./router.nix
+  ];
+
+  networking = {
+    interfaces.${wan}.ipv4.addresses = [{
+      address = "172.16.148.20";
+      prefixLength = 22;
+    }];
+    defaultGateway = {
+      address = "172.16.148.1";
+      interface = wan;
+    };
+  };
+}
diff --git a/hosts/lia/modules/network/router.nix b/hosts/lia/modules/network/router.nix
new file mode 100644
index 0000000..a6aef80
--- /dev/null
+++ b/hosts/lia/modules/network/router.nix
@@ -0,0 +1,47 @@
+{ ... }: let
+  wanInterface = "enp4s0f2";
+  lanInterfaces = [ "enp4s0f1" "enp4s0f3" ];
+
+  prefix = 24;
+  subnet = "192.168.1.0";
+  host = "192.168.1.1";
+
+  leaseRangeStart = "192.168.1.100";
+  leaseRangeEnd = "192.168.1.254";
+  nameServer = [ "10.0.0.2" "10.0.0.3" ];
+in
+{
+  networking = {
+    bridges."lan".interfaces = lanInterfaces;
+
+    nat = {
+      enable = true;
+      externalInterface = wanInterface;
+      internalInterfaces = [ "lan" ];
+    };
+
+    interfaces.lan = {
+      ipv4.addresses = [{ 
+        address = host;
+        prefixLength  = prefix;
+      }];
+    };
+
+    firewall = {
+      allowedUDPPorts = [ 53 67 ];
+      allowedTCPPorts = [ 53 ];
+      extraCommands = 
+        "iptables -t nat -I POSTROUTING 1 -s ${subnet}/${toString prefix} -o ${wanInterface} -j MASQUERADE";
+    };
+  };
+
+  services.dnsmasq = {
+    enable = true;
+
+    settings = {
+      server = nameServer;
+      dhcp-range = [ "${leaseRangeStart},${leaseRangeEnd}" ];
+      interface = [ "lan" ];
+    };
+  };
+}
diff --git a/hosts/lia/modules/users.nix b/hosts/lia/modules/users.nix
new file mode 100644
index 0000000..0161e0b
--- /dev/null
+++ b/hosts/lia/modules/users.nix
@@ -0,0 +1,5 @@
+{ ... }: {
+  users.users."rohit" = {
+    isNormalUser = true;
+  };
+}
-- 
cgit v1.2.3