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ma wiregrill: allow masquerading between wiregrill/retiolum

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makefu 2023-03-23 01:10:21 +01:00
parent 1d1eb043d1
commit 55b00f7139
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1 changed files with 34 additions and 9 deletions
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43
makefu/2configs/wireguard/wiregrill.nix
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@ -15,30 +15,55 @@ in mkIf (hasAttr "wiregrill" config.krebs.build.host.nets) {
"net.ipv6.conf.all.forwarding" = 1;
"net.ipv4.conf.all.forwarding" = 1;
};
networking.nat = {
networking.nat = mkIf isRouter {
enable = true;
enableIPv6 = true;
externalInterface = ext-if;
internalInterfaces = [ "wiregrill" ];
};
networking.firewall = {
allowedUDPPorts = [ self.wireguard.port ];
extraCommands = ''
${pkgs.iptables}/bin/iptables -A FORWARD -i wiregrill -o wiregrill -j ACCEPT
interfaces.wiregrill = mkIf isRouter {
allowedUDPPorts = [ 53 ];
allowedTCPPorts = [ 53 ];
};
};
services.dnsmasq = mkIf isRouter {
enable = true;
resolveLocalQueries = false;
extraConfig = /* dnsmasq */ ''
bind-interfaces
interface=retiolum,wiregrill
'';
servers = [ "1.1.1.1" ];
};
networking.wireguard.interfaces.wiregrill = {
postSetup = ''
${pkgs.iptables}/bin/iptables -t nat -A POSTROUTING -s 10.220.245.0/24 -o ${ext-if} -j MASQUERADE
${pkgs.iptables}/bin/ip6tables -t nat -A POSTROUTING -s 42::/16 -o ${ext-if} -j MASQUERADE
postSetup = optionalString isRouter ''
${pkgs.iptables}/bin/iptables -t nat -A PREROUTING -s 10.244.245.0/24 -j ACCEPT
${pkgs.iptables}/bin/iptables -t nat -A POSTROUTING -s 10.244.245.0/24 ! -d 10.244.245.0/24 -j MASQUERADE
${pkgs.iptables}/bin/iptables -A FORWARD -i wiregrill -o retiolum -j ACCEPT
${pkgs.iptables}/bin/iptables -A FORWARD -i retiolum -o wiregrill -j ACCEPT
${pkgs.iptables}/bin/ip6tables -t nat -A PREROUTING -s 42:1::/32 -j ACCEPT
${pkgs.iptables}/bin/ip6tables -t nat -A POSTROUTING -s 42:1::/32 ! -d 42:1::/48 -j MASQUERADE
${pkgs.iptables}/bin/ip6tables -A FORWARD -i wiregrill -o retiolum -j ACCEPT
${pkgs.iptables}/bin/ip6tables -A FORWARD -i retiolum -o wiregrill -j ACCEPT
'';
# This undoes the above command
postShutdown = ''
postShutdown = optionalString isRouter ''
${pkgs.iptables}/bin/iptables -t nat -D POSTROUTING -s 10.244.245.0/24 -o ${ext-if} -j MASQUERADE
${pkgs.iptables}/bin/ip6tables -t nat -D POSTROUTING -s 42::/16 -o ${ext-if} -j MASQUERADE
'';
${pkgs.iptables}/bin/iptables -D FORWARD -i wiregrill -o retiolum -j ACCEPT
${pkgs.iptables}/bin/iptables -D FORWARD -i retiolum -o wiregrill -j ACCEPT
${pkgs.iptables}/bin/ip6tables -t nat -D PREROUTING -s 42:1::/32 -j ACCEPT
${pkgs.iptables}/bin/ip6tables -t nat -D POSTROUTING -s 42:1::/32 ! -d 42:1::/48 -j MASQUERADE
${pkgs.iptables}/bin/ip6tables -D FORWARD -i wiregrill -o retiolum -j ACCEPT
${pkgs.iptables}/bin/ip6tables -D FORWARD -i retiolum -o wiregrill -j ACCEPT
'' ;
ips =
(optional (!isNull self.ip4) self.ip4.addr) ++
(optional (!isNull self.ip6) self.ip6.addr);