91 lines
2.8 KiB
Nix
91 lines
2.8 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.local.services.vpn.wireguard;
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addrsViaDefaultInterface = [
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# cache.nixos.org
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"151.101.86.217/32"
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# tbank.ru
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"178.248.236.218/32"
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];
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in
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{
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options.local.services.vpn.wireguard = with lib; {
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enable = mkEnableOption "Enable wireguard vpn";
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ip = mkOption {
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type = types.str;
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example = "10.100.0.1/24";
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};
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privateKeyFile = mkOption {
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type = types.str;
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};
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server = {
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addr = mkOption {
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type = types.str;
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};
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port = mkOption {
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type = types.int;
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};
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publicKey = mkOption {
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type = types.str;
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};
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};
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};
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config = lib.mkIf cfg.enable {
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networking.firewall = {
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allowedUDPPorts = [ cfg.server.port ]; # Clients and peers can use the same port, see listenport
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};
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# Enable WireGuard
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networking.wg-quick.interfaces = {
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# "wg0" is the network interface name. You can name the interface arbitrarily.
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wg0 = {
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# Determines the IP address and subnet of the client's end of the tunnel interface.
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address = [ cfg.ip ];
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dns = [ "10.20.30.1" ];
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listenPort = cfg.server.port; # to match firewall allowedUDPPorts (without this wg uses random port numbers)
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# Path to the private key file.
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privateKeyFile = cfg.privateKeyFile;
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postUp = ''
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addr=`${pkgs.iproute2}/bin/ip route | ${pkgs.gawk}/bin/awk '/default/ {print $3; exit}'`
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interface=`${pkgs.iproute2}/bin/ip route | ${pkgs.gawk}/bin/awk '/default/ {print $5; exit}'`
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'' + lib.concatLines (map
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(addr: "${pkgs.iproute2}/bin/ip route add ${addr} via $addr dev $interface || true")
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addrsViaDefaultInterface
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);
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preDown = ''
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addr=`${pkgs.iproute2}/bin/ip route | ${pkgs.gawk}/bin/awk '/default/ {print $3; exit}'`
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interface=`${pkgs.iproute2}/bin/ip route | ${pkgs.gawk}/bin/awk '/default/ {print $5; exit}'`
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'' + lib.concatLines (map
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(addr: "${pkgs.iproute2}/bin/ip route del ${addr} via $addr dev $interface || true")
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addrsViaDefaultInterface
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);
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peers = [
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# For a client configuration, one peer entry for the server will suffice.
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{
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# Public key of the server (not a file path).
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publicKey = cfg.server.publicKey;
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# Forward all the traffic via VPN.
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allowedIPs = [ "0.0.0.0/0" ];
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# Or forward only particular subnets
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# allowedIPs = [ "192.168.0.0/24" ];
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# Set this to the server IP and port.
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endpoint = "${cfg.server.addr}:${toString cfg.server.port}";
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# Send keepalives every 25 seconds. Important to keep NAT tables alive.
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persistentKeepalive = 15;
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}
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];
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};
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};
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};
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}
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