75 lines
1.9 KiB
Nix
75 lines
1.9 KiB
Nix
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{config, ...}: {
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# iptables needs to permit forwarding from wg0 to wg0
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networking.firewall.extraCommands = ''
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iptables -A FORWARD -i wg0 -o wg0 -j ACCEPT
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# This ensures that we send messages with the correct MTU to any
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# connecting host; without it, the weirdest errors occur
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iptables -A FORWARD -i wg0 -o wg0 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
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'';
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systemd.network = {
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netdevs = {
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"20-wg0" = {
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netdevConfig = {
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Name = "wg0";
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Kind = "wireguard";
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Description = "wg0 - wireguard tunnel";
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};
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wireguardConfig = {
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ListenPort = 51820;
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PrivateKeyFile = config.sops.secrets."wireguard/server-key".path;
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# Public key: 73z3Pga/2BCxETYM/qCT2FM1JUCUvQ+Cp+8ROxjhu0w=
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};
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wireguardPeers = [
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{
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# yui
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wireguardPeerConfig = {
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AllowedIPs = ["10.45.249.2/32"];
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PublicKey = "5mlnqEVJWks5OqgeFA2bLIrvST9TlCE81Btl+j4myz0=";
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};
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}
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{
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# yuanyuan
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wireguardPeerConfig = {
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AllowedIPs = ["10.45.249.10/32"];
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PublicKey = "0UsFE2atz/O5P3OKQ8UHyyyGQNJbp1MeIWUJLuoerwE=";
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};
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}
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];
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};
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};
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networks = {
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"20-wg0" = {
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matchConfig.Name = "wg0";
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networkConfig = {
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Address = [
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"10.45.249.1/32"
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# TODO(tlater): Add IPv6 whenever that becomes relevant
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];
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IPForward = "yes";
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IPv4ProxyARP = "yes";
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};
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routes = [
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{
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routeConfig = {
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Source = "10.45.249.0/24";
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Destination = "10.45.249.0/24";
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Gateway = "10.45.249.1";
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GatewayOnLink = "no";
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};
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}
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];
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linkConfig.RequiredForOnline = "no";
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};
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};
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};
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}
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