43 lines
1.1 KiB
Nix
43 lines
1.1 KiB
Nix
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.syscfg.net.wg;
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in
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{
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config = lib.mkIf (config.syscfg.net.wg.server.enable) {
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boot.kernel.sysctl = {
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"net.ipv4.ip_forward" = 1;
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"net.ipv6.conf.all.forwarding" = 1;
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};
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networking.nftables.enable = true;
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networking.nftables.ruleset = ''
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table inet nat {
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chain prerouting {
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type nat hook prerouting priority 0; policy accept;
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${concatMapStringsSep "\n" (ports:
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let
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src = builtins.elemAt ports 0;
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dst = builtins.elemAt ports 1;
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in ''
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iifname "${cfg.inInterface}" tcp dport ${toString src} counter dnat to ${cfg.toAddr}:${toString dst}
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iifname "${cfg.inInterface}" udp dport ${toString src} counter dnat to ${cfg.toAddr}:${toString dst}
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''
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) cfg.forwarding.ports}
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}
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chain postrouting {
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type nat hook postrouting priority 100; policy accept;
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oifname { "wg0", "ens3" } masquerade
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}
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}
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'';
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};
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} |