mirror of
https://gitlab.com/upRootNutrition/dotfiles.git
synced 2025-12-06 21:17:14 -06:00
feat: got port forwarding working
This commit is contained in:
Nick
parent
7107fb77a1
commit
866c074824
1 changed files with 111 additions and 57 deletions
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@ -12,6 +12,8 @@ let
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dns0 = instances.web.dns.provider0;
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dns0Path = "dns/${dns0}";
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torrentPort = 51820;
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vpnEndpoint = "185.111.110.1";
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localNet = "192.168.50.0/24";
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in
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{
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microvm.vms.${serviceCfg.name} = {
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@ -19,18 +21,64 @@ in
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config = {
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system.stateVersion = "25.05";
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# VPN Killswitch - configured BEFORE networking starts
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boot.kernel.sysctl = {
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"net.ipv4.ip_forward" = 1;
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};
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networking = {
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# Disable default firewall - we're doing it manually
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firewall.enable = false;
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# Configure iptables killswitch at boot, before any services
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localCommands = ''
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# Default DROP everything
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${pkgs.iptables}/bin/iptables -P INPUT DROP
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${pkgs.iptables}/bin/iptables -P OUTPUT DROP
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${pkgs.iptables}/bin/iptables -P FORWARD DROP
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# Flush existing rules
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${pkgs.iptables}/bin/iptables -F
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${pkgs.iptables}/bin/iptables -t nat -F
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${pkgs.iptables}/bin/iptables -X
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# Allow loopback
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${pkgs.iptables}/bin/iptables -A INPUT -i lo -j ACCEPT
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${pkgs.iptables}/bin/iptables -A OUTPUT -o lo -j ACCEPT
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# Allow established/related connections
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${pkgs.iptables}/bin/iptables -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
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${pkgs.iptables}/bin/iptables -A OUTPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
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# Allow SSH on all interfaces (for management)
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${pkgs.iptables}/bin/iptables -A INPUT -p tcp --dport 22 -j ACCEPT
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${pkgs.iptables}/bin/iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT
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# Allow local network for management (WebUI, etc)
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${pkgs.iptables}/bin/iptables -A INPUT -i enp0s5 -s ${localNet} -j ACCEPT
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${pkgs.iptables}/bin/iptables -A OUTPUT -o enp0s5 -d ${localNet} -j ACCEPT
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# CRITICAL: Only allow WireGuard endpoint before VPN is up
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${pkgs.iptables}/bin/iptables -A OUTPUT -o enp0s5 -p udp --dport ${toString torrentPort} -d ${vpnEndpoint} -j ACCEPT
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${pkgs.iptables}/bin/iptables -A INPUT -i enp0s5 -p udp --sport ${toString torrentPort} -s ${vpnEndpoint} -j ACCEPT
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# Allow DNS for WireGuard resolution (if needed)
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${pkgs.iptables}/bin/iptables -A OUTPUT -o enp0s5 -p udp --dport 53 -d ${localNet} -j ACCEPT
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# Log dropped packets (optional, for debugging)
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${pkgs.iptables}/bin/iptables -A OUTPUT -j LOG --log-prefix "KILLSWITCH-OUT: " --log-level 4
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${pkgs.iptables}/bin/iptables -A INPUT -j LOG --log-prefix "KILLSWITCH-IN: " --log-level 4
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'';
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wg-quick.interfaces = {
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wg0 = {
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address = [
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"10.2.0.2/32"
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];
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address = [ "10.2.0.2/32" ];
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dns = [ "10.2.0.1" ];
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privateKeyFile = "/run/secrets/wireguard-pass";
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peers = [
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{
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publicKey = "QPfiwJQmt5VLEOh1ufLbi1lj6LUnwQY0tgDSh3pWx1k=";
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endpoint = "185.111.110.1:${builtins.toString torrentPort}";
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endpoint = "${vpnEndpoint}:${toString torrentPort}";
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allowedIPs = [
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"0.0.0.0/0"
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"::/0"
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@ -38,33 +86,43 @@ in
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persistentKeepalive = 25;
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}
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];
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# Now we can safely open the VPN tunnel for all traffic
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postUp = ''
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# Allow all traffic through VPN interface
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${pkgs.iptables}/bin/iptables -A INPUT -i wg0 -j ACCEPT
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${pkgs.iptables}/bin/iptables -A OUTPUT -o wg0 -j ACCEPT
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# NAT for VPN
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${pkgs.iptables}/bin/iptables -t nat -A POSTROUTING -o wg0 -j MASQUERADE
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# Allow forwarding through VPN
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${pkgs.iptables}/bin/iptables -A FORWARD -i wg0 -j ACCEPT
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${pkgs.iptables}/bin/iptables -A FORWARD -o wg0 -j ACCEPT
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'';
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preDown = ''
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# Remove VPN-specific rules (killswitch rules stay!)
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${pkgs.iptables}/bin/iptables -D INPUT -i wg0 -j ACCEPT 2>/dev/null || true
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${pkgs.iptables}/bin/iptables -D OUTPUT -o wg0 -j ACCEPT 2>/dev/null || true
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${pkgs.iptables}/bin/iptables -t nat -D POSTROUTING -o wg0 -j MASQUERADE 2>/dev/null || true
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${pkgs.iptables}/bin/iptables -D FORWARD -i wg0 -j ACCEPT 2>/dev/null || true
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${pkgs.iptables}/bin/iptables -D FORWARD -o wg0 -j ACCEPT 2>/dev/null || true
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'';
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};
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};
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firewall = {
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enable = true;
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allowedTCPPorts = [
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22
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torrentPort
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serviceCfg.ports.port0
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];
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allowedUDPPorts = [
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torrentPort
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];
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};
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dhcpcd.enable = false;
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useNetworkd = true;
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};
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# imports = [
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# ./rqbit.nix
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# ];
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services = {
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qbittorrent = {
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enable = true;
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webuiPort = serviceCfg.ports.port0;
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torrentingPort = torrentPort;
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openFirewall = true;
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openFirewall = false; # We're managing firewall manually
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serverConfig = {
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LegalNotice.Accepted = true;
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@ -85,14 +143,13 @@ in
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Preferences = {
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WebUI = {
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Username = "user";
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# generate new passwords with this:
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# https://codeberg.org/feathecutie/qbittorrent_password
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Password_PBKDF2 = "@ByteArray(1bJKXLVSLU6kgCHbCS2lDg==:BmyrMaod6dbJqEe7Ud/JgKAxRMqzsAuEjHcTvLzIBgc5rc5Z7J2X9mbH0cDEAhXqc+O3gQxrckt8S2Gf+zlO9w==)";
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};
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General = {
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Locale = "en";
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};
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Downloads = {
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SavePath = "${serviceCfg.varPaths.path0}/downloads";
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TempPathEnabled = false;
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@ -126,9 +183,20 @@ in
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];
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services = {
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# Ensure qBittorrent ONLY starts after VPN is up
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qbittorrent = {
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after = [ "wg-quick-wg0.service" ];
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after = [
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"wg-quick-wg0.service"
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"network-online.target"
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];
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requires = [ "wg-quick-wg0.service" ];
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wants = [ "network-online.target" ];
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bindsTo = [ "wg-quick-wg0.service" ]; # Stop if VPN stops
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serviceConfig = {
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Restart = "on-failure";
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RestartSec = "10s";
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};
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};
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natpmp-portforward = {
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@ -142,63 +210,48 @@ in
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"qbittorrent.service"
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];
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Type = "simple";
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Restart = "always";
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RestartSec = "10s";
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};
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script = ''
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PASSWORD=$(cat /run/secrets/qbittorrent-pass)
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# Wait for qBittorrent to be ready
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echo "Waiting for qBittorrent to start..."
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sleep 10
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# Enable IP forwarding
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echo 1 > /proc/sys/net/ipv4/ip_forward
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while true; do
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echo "Requesting port forwarding from VPN..."
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# Get the forwarded port for UDP
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UDP_OUTPUT=$(${pkgs.libnatpmp}/bin/natpmpc -a 1 0 udp 60 -g 10.2.0.1 2>&1)
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UDP_PORT=$(echo "$UDP_OUTPUT" | ${pkgs.gnugrep}/bin/grep "Mapped public port" | ${pkgs.gawk}/bin/awk '{print $4}' | head -1)
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# Get the forwarded port for TCP
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TCP_OUTPUT=$(${pkgs.libnatpmp}/bin/natpmpc -a 1 0 tcp 60 -g 10.2.0.1 2>&1)
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TCP_PORT=$(echo "$TCP_OUTPUT" | ${pkgs.gnugrep}/bin/grep "Mapped public port" | ${pkgs.gawk}/bin/awk '{print $4}' | head -1)
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if [ -n "$UDP_PORT" ] && [ -n "$TCP_PORT" ]; then
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echo "Port forwarding successful: UDP=$UDP_PORT, TCP=$TCP_PORT"
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# Clear old PREROUTING rules to avoid duplicates
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${pkgs.iptables}/bin/iptables -t nat -D PREROUTING -i enp0s5 -p tcp -j DNAT --to-destination 10.2.0.2 2>/dev/null || true
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${pkgs.iptables}/bin/iptables -t nat -D PREROUTING -i enp0s5 -p udp -j DNAT --to-destination 10.2.0.2 2>/dev/null || true
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# Clean up old dynamic rules
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${pkgs.iptables}/bin/iptables -t nat -D PREROUTING -i enp0s5 -s ${localNet} -p tcp -j DNAT 2>/dev/null || true
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${pkgs.iptables}/bin/iptables -t nat -D PREROUTING -i enp0s5 -s ${localNet} -p udp -j DNAT 2>/dev/null || true
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${pkgs.iptables}/bin/iptables -D FORWARD -i enp0s5 -o wg0 -p tcp -j ACCEPT 2>/dev/null || true
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${pkgs.iptables}/bin/iptables -D FORWARD -i enp0s5 -o wg0 -p udp -j ACCEPT 2>/dev/null || true
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${pkgs.iptables}/bin/iptables -D FORWARD -i wg0 -o enp0s5 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT 2>/dev/null || true
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# Forward traffic from enp0s5 (VM's main interface) to wg0 (WireGuard interface)
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${pkgs.iptables}/bin/iptables -t nat -A PREROUTING -i enp0s5 -p tcp --dport "$TCP_PORT" -j DNAT --to-destination 10.2.0.2:$TCP_PORT
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${pkgs.iptables}/bin/iptables -t nat -A PREROUTING -i enp0s5 -p udp --dport "$UDP_PORT" -j DNAT --to-destination 10.2.0.2:$UDP_PORT
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# DNAT: Forward LAN traffic to qBittorrent on WireGuard interface
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${pkgs.iptables}/bin/iptables -t nat -A PREROUTING -i enp0s5 -s ${localNet} -p tcp --dport "$TCP_PORT" -j DNAT --to-destination 10.2.0.2:"$TCP_PORT"
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${pkgs.iptables}/bin/iptables -t nat -A PREROUTING -i enp0s5 -s ${localNet} -p udp --dport "$UDP_PORT" -j DNAT --to-destination 10.2.0.2:"$UDP_PORT"
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# Enable masquerading for responses
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${pkgs.iptables}/bin/iptables -t nat -C POSTROUTING -o wg0 -j MASQUERADE 2>/dev/null || \
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${pkgs.iptables}/bin/iptables -t nat -A POSTROUTING -o wg0 -j MASQUERADE
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# Allow forwarding between interfaces
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${pkgs.iptables}/bin/iptables -C FORWARD -i enp0s5 -o wg0 -j ACCEPT 2>/dev/null || \
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${pkgs.iptables}/bin/iptables -A FORWARD -i enp0s5 -o wg0 -j ACCEPT
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${pkgs.iptables}/bin/iptables -C FORWARD -i wg0 -o enp0s5 -m state --state RELATED,ESTABLISHED -j ACCEPT 2>/dev/null || \
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${pkgs.iptables}/bin/iptables -A FORWARD -i wg0 -o enp0s5 -m state --state RELATED,ESTABLISHED -j ACCEPT
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# Allow forwarding for these specific ports
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${pkgs.iptables}/bin/iptables -A FORWARD -i enp0s5 -o wg0 -d 10.2.0.2 -p tcp --dport "$TCP_PORT" -j ACCEPT
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${pkgs.iptables}/bin/iptables -A FORWARD -i enp0s5 -o wg0 -d 10.2.0.2 -p udp --dport "$UDP_PORT" -j ACCEPT
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${pkgs.iptables}/bin/iptables -A FORWARD -i wg0 -o enp0s5 -s 10.2.0.2 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
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echo "Firewall forwarding rules updated for ports: UDP=$UDP_PORT, TCP=$TCP_PORT"
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# Open the ports in the firewall dynamically (INPUT chain)
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${pkgs.iptables}/bin/iptables -C INPUT -p udp --dport "$UDP_PORT" -j ACCEPT 2>/dev/null || \
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${pkgs.iptables}/bin/iptables -A INPUT -p udp --dport "$UDP_PORT" -j ACCEPT
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${pkgs.iptables}/bin/iptables -C INPUT -p tcp --dport "$TCP_PORT" -j ACCEPT 2>/dev/null || \
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${pkgs.iptables}/bin/iptables -A INPUT -p tcp --dport "$TCP_PORT" -j ACCEPT
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echo "Firewall INPUT rules updated for ports: UDP=$UDP_PORT, TCP=$TCP_PORT"
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# Update qBittorrent listening port via API
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echo "Logging into qBittorrent API..."
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COOKIE=$(${pkgs.curl}/bin/curl -s -i \
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@ -206,6 +259,7 @@ in
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--data "username=user&password=$PASSWORD" \
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"http://localhost:${toString serviceCfg.ports.port0}/api/v2/auth/login" | \
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${pkgs.gnugrep}/bin/grep -i "set-cookie" | ${pkgs.gawk}/bin/awk -F'SID=|;' '{print $2}')
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if [ -n "$COOKIE" ]; then
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echo "Authentication successful, updating port..."
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${pkgs.curl}/bin/curl -s \
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@ -221,7 +275,6 @@ in
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echo "ERROR: Failed to get forwarded ports"
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echo "UDP output: $UDP_OUTPUT"
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echo "TCP output: $TCP_OUTPUT"
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exit 1
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fi
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sleep 45
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@ -282,6 +335,7 @@ in
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environment.systemPackages = builtins.attrValues {
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inherit (pkgs)
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bottom
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conntrack-tools
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gawk
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iptables
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libnatpmp
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@ -292,6 +346,7 @@ in
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};
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};
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# Host configuration remains the same
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services = {
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caddy = {
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virtualHosts = {
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@ -325,7 +380,6 @@ in
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owner = "root";
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mode = "0400";
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};
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};
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security.acme.certs."${host}" = {
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@ -342,6 +396,7 @@ in
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EnvironmentFile = config.sops.secrets."caddy/share-auth".path;
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};
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};
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tmpfiles.rules = [
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"d ${serviceCfg.mntPaths.path0} 0755 microvm wheel - -"
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"d ${serviceCfg.secretPaths.path0}/caddy 755 caddy caddy -"
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@ -359,5 +414,4 @@ in
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torrentPort
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];
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};
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}
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