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nixformat + firewall rules to port forward qbittorrent

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This commit is contained in:
Danilo Reyes
2026-04-01 20:32:31 -06:00
parent 1877ad159e
commit 645b022bcf
7 changed files with 127 additions and 22 deletions
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73
hosts/server/configuration.nix
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@@ -7,6 +7,9 @@
}:
let
lidarrMbGapId = 968;
qbittorrentRouteTable = 200;
serverInterface = config.my.interfaces.server;
jawzUid = config.users.users.jawz.uid;
in
{
imports = [
@@ -70,7 +73,11 @@ in
};
networking = {
hostName = "server";
iproute2.rttablesExtraConfig = ''
${toString qbittorrentRouteTable} qbittorrent
'';
wireguard.interfaces.wg0 = lib.mkIf config.my.secureHost {
allowedIPsAsRoutes = false;
ips = [ "${config.my.ips.wg-server}/32" ];
privateKeyFile = config.sops.secrets."server/private".path;
peers = [
@@ -78,6 +85,7 @@ in
publicKey = "dFbiSekBwnZomarcS31o5+w6imHjMPNCipkfc2fZ3GY=";
endpoint = "${config.my.ips.vps}:51820";
allowedIPs = [
"0.0.0.0/0"
"${config.my.ips.wg-vps}/32"
config.my.subnets.wg-homelab
config.my.subnets.wg-friends
@@ -92,6 +100,71 @@ in
interfaces.wg0.allowedTCPPorts = [ config.my.servers.nextcloud.port ];
};
};
systemd.services.qbittorrent-vpn-routing = lib.mkIf config.my.secureHost {
description = "Route qBittorrent user traffic through the VPS WireGuard tunnel";
wantedBy = [ "multi-user.target" ];
after = [ "network-online.target" ];
wants = [ "network-online.target" ];
path = with pkgs; [
coreutils
gnugrep
iproute2
];
script = ''
for _ in $(seq 1 30); do
if ip -4 addr show dev wg0 >/dev/null 2>&1; then
break
fi
sleep 1
done
if ! ip -4 addr show dev wg0 >/dev/null 2>&1; then
echo "wg0 is not available"
exit 1
fi
ip -4 route replace ${config.my.subnets.wg-homelab} dev wg0 src ${config.my.ips.wg-server}
ip -4 route replace ${config.my.subnets.wg-friends} dev wg0 src ${config.my.ips.wg-server}
ip -4 route replace ${config.my.subnets.wg-guests} dev wg0 src ${config.my.ips.wg-server}
ip -4 route replace table ${toString qbittorrentRouteTable} ${config.my.subnets.wg-homelab} dev wg0 src ${config.my.ips.wg-server}
ip -4 route replace table ${toString qbittorrentRouteTable} ${config.my.subnets.wg-friends} dev wg0 src ${config.my.ips.wg-server}
ip -4 route replace table ${toString qbittorrentRouteTable} ${config.my.subnets.wg-guests} dev wg0 src ${config.my.ips.wg-server}
ip -4 route replace table ${toString qbittorrentRouteTable} 10.88.0.0/16 dev podman0 src 10.88.0.1
ip -4 route replace table ${toString qbittorrentRouteTable} 192.168.100.0/24 dev ${serverInterface} src ${config.my.ips.server}
ip -4 route replace table ${toString qbittorrentRouteTable} ${config.my.ips.vps}/32 via ${config.my.ips.router} dev ${serverInterface} src ${config.my.ips.server}
ip -4 route replace table ${toString qbittorrentRouteTable} default via ${config.my.ips.wg-vps} dev wg0 src ${config.my.ips.wg-server}
while ip -4 rule show | grep -q 'uidrange ${toString jawzUid}-${toString jawzUid} lookup ${toString qbittorrentRouteTable}'; do
ip -4 rule del uidrange ${toString jawzUid}-${toString jawzUid} lookup ${toString qbittorrentRouteTable}
done
while ip -4 rule show | grep -q 'from ${config.my.ips.wg-server} lookup ${toString qbittorrentRouteTable}'; do
ip -4 rule del from ${config.my.ips.wg-server}/32 lookup ${toString qbittorrentRouteTable}
done
ip -4 rule add from ${config.my.ips.wg-server}/32 lookup ${toString qbittorrentRouteTable} priority 9999
ip -4 rule add uidrange ${toString jawzUid}-${toString jawzUid} lookup ${toString qbittorrentRouteTable} priority 10000
'';
preStop = ''
while ip -4 rule show | grep -q 'from ${config.my.ips.wg-server} lookup ${toString qbittorrentRouteTable}'; do
ip -4 rule del from ${config.my.ips.wg-server}/32 lookup ${toString qbittorrentRouteTable} || true
done
while ip -4 rule show | grep -q 'uidrange ${toString jawzUid}-${toString jawzUid} lookup ${toString qbittorrentRouteTable}'; do
ip -4 rule del uidrange ${toString jawzUid}-${toString jawzUid} lookup ${toString qbittorrentRouteTable} || true
done
ip -4 route del ${config.my.subnets.wg-homelab} dev wg0 || true
ip -4 route del ${config.my.subnets.wg-friends} dev wg0 || true
ip -4 route del ${config.my.subnets.wg-guests} dev wg0 || true
ip -4 route flush table ${toString qbittorrentRouteTable} || true
'';
serviceConfig = {
RemainAfterExit = true;
Type = "oneshot";
};
};
users.users.jawz.packages = builtins.attrValues {
inherit (pkgs) podman-compose attic-client;
};