104 lines
3.1 KiB
Nix
104 lines
3.1 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.profile.services.wireguard;
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externalInterface = config.profile.networking.externalInterface;
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devices = [
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{
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name = "phone";
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ip = "10.100.0.2";
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secret = "wireguard/private_keys/phone";
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publicKey = "27GSz9iWqtg23sWcwIQI3VglNtE/RWykv+nZUrmHHxA=";
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}
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{
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name = "laptop";
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ip = "10.100.0.3";
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secret = "wireguard/private_keys/laptop";
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publicKey = "5nporvzbJtTQC9Hek8JBJNIF+wGlWUj4En2w9DrvaV0=";
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}
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];
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serverPublicKey = "GDRUvnKUPNzwAloQ5fxvdHoVw4D1YbdCR0GyiOyyB38=";
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sopsFile = ../../secrets/wireguard.yaml;
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inherit (lib) mkIf mergeAttrsList generators;
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in
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{
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config = mkIf cfg.enable {
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sops.secrets = mergeAttrsList ([
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{
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"wireguard/private_keys/server" = { inherit sopsFile; };
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}
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] ++
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(map (device: { ${device.secret} = { inherit sopsFile; }; }) devices)
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);
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sops.templates =
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let
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template = { privateKey, ip }:
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generators.toINI ({ }) {
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Interface = {
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Address = "${ip}/32";
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PrivateKey = privateKey;
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DNS = "192.168.100.3";
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};
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Peer = {
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PublicKey = serverPublicKey;
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Endpoint = "vpn.tigor.web.id:51820";
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AllowedIPs = "0.0.0.0/0, ::/0";
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};
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};
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in
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mergeAttrsList (map
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(device: {
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"wireguard/clients/${device.name}" = {
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content = template {
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privateKey = config.sops.placeholder.${device.secret};
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ip = device.ip;
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};
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path = "/nas/Syncthing/Sync/WireGuard/${device.name}.conf";
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owner = config.profile.user.name;
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};
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})
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devices
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);
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networking = {
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nat = {
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enable = true;
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inherit externalInterface;
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internalInterfaces = [ "wg0" ];
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};
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firewall.allowedUDPPorts = [ 51820 ];
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wireguard.interfaces = {
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wg0 = {
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# Determines the IP address and subnet of the server's end of the tunnel interface.
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ips = [ "10.100.0.1/16" ];
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# The port that WireGuard listens to. Must be accessible by the client.
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listenPort = 51820;
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# This allows the wireguard server to route your traffic to the internet and hence be like a VPN
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# For this to work you have to set the dnsserver IP of your router (or dnsserver of choice) in your clients
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postSetup = ''
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${pkgs.iptables}/bin/iptables -t nat -A POSTROUTING -s 10.100.0.0/16 -o ${externalInterface} -j MASQUERADE
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'';
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# This undoes the above command
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postShutdown = ''
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${pkgs.iptables}/bin/iptables -t nat -D POSTROUTING -s 10.100.0.0/16 -o ${externalInterface} -j MASQUERADE
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'';
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privateKeyFile = config.sops.secrets."wireguard/private_keys/server".path;
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peers = map
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(device: {
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publicKey = device.publicKey;
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allowedIPs = [ device.ip ];
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})
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devices;
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};
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};
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};
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};
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}
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