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feat: got port forwarding working

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Nick 2025-11-27 16:04:45 -06:00
parent 866c074824
commit 70f7fefd71
1 changed files with 19 additions and 8 deletions
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27
modules/nixos/guests/torrent/default.nix
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@ -46,15 +46,19 @@ in
${pkgs.iptables}/bin/iptables -A INPUT -i lo -j ACCEPT ${pkgs.iptables}/bin/iptables -A INPUT -i lo -j ACCEPT
${pkgs.iptables}/bin/iptables -A OUTPUT -o lo -j ACCEPT ${pkgs.iptables}/bin/iptables -A OUTPUT -o lo -j ACCEPT
# Allow established/related connections # Allow established/related connections on VPN interface only
${pkgs.iptables}/bin/iptables -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT ${pkgs.iptables}/bin/iptables -A INPUT -i wg0 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
${pkgs.iptables}/bin/iptables -A OUTPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT ${pkgs.iptables}/bin/iptables -A OUTPUT -o wg0 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
# Allow established/related connections on local network (for management)
${pkgs.iptables}/bin/iptables -A INPUT -i enp0s5 -s ${localNet} -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
${pkgs.iptables}/bin/iptables -A OUTPUT -o enp0s5 -d ${localNet} -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
# Allow SSH on all interfaces (for management) # Allow SSH on all interfaces (for management)
${pkgs.iptables}/bin/iptables -A INPUT -p tcp --dport 22 -j ACCEPT ${pkgs.iptables}/bin/iptables -A INPUT -p tcp --dport 22 -j ACCEPT
${pkgs.iptables}/bin/iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT ${pkgs.iptables}/bin/iptables -A OUTPUT -p tcp --sport 22 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
# Allow local network for management (WebUI, etc) # Allow local network for management (WebUI, etc) - NEW connections
${pkgs.iptables}/bin/iptables -A INPUT -i enp0s5 -s ${localNet} -j ACCEPT ${pkgs.iptables}/bin/iptables -A INPUT -i enp0s5 -s ${localNet} -j ACCEPT
${pkgs.iptables}/bin/iptables -A OUTPUT -o enp0s5 -d ${localNet} -j ACCEPT ${pkgs.iptables}/bin/iptables -A OUTPUT -o enp0s5 -d ${localNet} -j ACCEPT
@ -62,10 +66,17 @@ in
${pkgs.iptables}/bin/iptables -A OUTPUT -o enp0s5 -p udp --dport ${toString torrentPort} -d ${vpnEndpoint} -j ACCEPT ${pkgs.iptables}/bin/iptables -A OUTPUT -o enp0s5 -p udp --dport ${toString torrentPort} -d ${vpnEndpoint} -j ACCEPT
${pkgs.iptables}/bin/iptables -A INPUT -i enp0s5 -p udp --sport ${toString torrentPort} -s ${vpnEndpoint} -j ACCEPT ${pkgs.iptables}/bin/iptables -A INPUT -i enp0s5 -p udp --sport ${toString torrentPort} -s ${vpnEndpoint} -j ACCEPT
# Allow DNS for WireGuard resolution (if needed) # DNS: Only allow through VPN gateway (10.2.0.1) - no local DNS leaks
${pkgs.iptables}/bin/iptables -A OUTPUT -o enp0s5 -p udp --dport 53 -d ${localNet} -j ACCEPT # This rule will only work once WireGuard is up
# If you need DNS before VPN for WireGuard hostname resolution, uncomment below:
# ${pkgs.iptables}/bin/iptables -A OUTPUT -o enp0s5 -p udp --dport 53 -d 192.168.50.1 -j ACCEPT
# Log dropped packets (optional, for debugging) # Block IPv6 completely (defense in depth, even though we disabled it)
${pkgs.iptables}/bin/ip6tables -P INPUT DROP 2>/dev/null || true
${pkgs.iptables}/bin/ip6tables -P OUTPUT DROP 2>/dev/null || true
${pkgs.iptables}/bin/ip6tables -P FORWARD DROP 2>/dev/null || true
# Log dropped packets (optional, for debugging - comment out in production)
${pkgs.iptables}/bin/iptables -A OUTPUT -j LOG --log-prefix "KILLSWITCH-OUT: " --log-level 4 ${pkgs.iptables}/bin/iptables -A OUTPUT -j LOG --log-prefix "KILLSWITCH-OUT: " --log-level 4
${pkgs.iptables}/bin/iptables -A INPUT -j LOG --log-prefix "KILLSWITCH-IN: " --log-level 4 ${pkgs.iptables}/bin/iptables -A INPUT -j LOG --log-prefix "KILLSWITCH-IN: " --log-level 4
''; '';