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ma wireguard: ensure correct routing on server

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makefu 2023-06-03 15:37:11 +02:00
parent 1216191a10
commit c0c9a93295
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GPG Key ID: 36F7711F3FC0F225
2 changed files with 44 additions and 27 deletions
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1
makefu/2configs/wireguard/server.nix
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@ -17,7 +17,6 @@ in { # wireguard server
externalInterface = ext-if; externalInterface = ext-if;
internalInterfaces = [ "wg0" ]; internalInterfaces = [ "wg0" ];
}; };
networking.wireguard.interfaces.wg0 = { networking.wireguard.interfaces.wg0 = {
ips = [ "10.244.0.1/24" ]; ips = [ "10.244.0.1/24" ];
listenPort = 51820; listenPort = 51820;

70
makefu/2configs/wireguard/wiregrill.nix
View File

@ -15,12 +15,12 @@ in mkIf (hasAttr "wiregrill" config.krebs.build.host.nets) {
"net.ipv6.conf.all.forwarding" = 1; "net.ipv6.conf.all.forwarding" = 1;
"net.ipv4.conf.all.forwarding" = 1; "net.ipv4.conf.all.forwarding" = 1;
}; };
networking.nat = mkIf isRouter { #networking.nat = mkIf isRouter {
enable = true; # enable = true;
enableIPv6 = true; # enableIPv6 = true;
externalInterface = ext-if; # externalInterface = ext-if;
internalInterfaces = [ "wiregrill" ]; # internalInterfaces = [ "wiregrill" ];
}; #};
networking.firewall = { networking.firewall = {
allowedUDPPorts = [ self.wireguard.port ]; allowedUDPPorts = [ self.wireguard.port ];
@ -40,30 +40,48 @@ in mkIf (hasAttr "wiregrill" config.krebs.build.host.nets) {
servers = [ "1.1.1.1" ]; servers = [ "1.1.1.1" ];
}; };
networking.wireguard.interfaces.wiregrill = { networking.wireguard.interfaces.wiregrill = let
postSetup = optionalString isRouter '' ipt = "${pkgs.iptables}/bin/iptables";
${pkgs.iptables}/bin/iptables -t nat -A PREROUTING -s 10.244.245.0/24 -j ACCEPT ip6 = "${pkgs.iptables}/bin/ip6tables";
${pkgs.iptables}/bin/iptables -t nat -A POSTROUTING -s 10.244.245.0/24 ! -d 10.244.245.0/24 -j MASQUERADE in {
${pkgs.iptables}/bin/iptables -A FORWARD -i wiregrill -o retiolum -j ACCEPT postSetup = ''
${pkgs.iptables}/bin/iptables -A FORWARD -i retiolum -o wiregrill -j ACCEPT ${ipt} -A FORWARD -i wiregrill -o retiolum -j ACCEPT
${ipt} -A FORWARD -i wiregrill -o wiregrill -j ACCEPT
${ipt} -A FORWARD -o wiregrill -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
${ip6} -A FORWARD -i wiregrill -o retiolum -j ACCEPT
${ip6} -A FORWARD -i retiolum -o wiregrill -j ACCEPT
${ip6} -A FORWARD -i wiregrill -o wiregrill -j ACCEPT
${ip6} -A FORWARD -o wiregrill -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
${pkgs.iptables}/bin/ip6tables -t nat -A PREROUTING -s 42:1::/32 -j ACCEPT '' + (optionalString isRouter ''
${pkgs.iptables}/bin/ip6tables -t nat -A POSTROUTING -s 42:1::/32 ! -d 42:1::/48 -j MASQUERADE #${ipt} -t nat -A PREROUTING -s 10.244.245.0/24 -j ACCEPT
${pkgs.iptables}/bin/ip6tables -A FORWARD -i wiregrill -o retiolum -j ACCEPT #${ipt} -t nat -A POSTROUTING -s 10.244.245.0/24 ! -d 10.244.245.0/24 -j MASQUERADE
${pkgs.iptables}/bin/ip6tables -A FORWARD -i retiolum -o wiregrill -j ACCEPT
''; #${ip6} -t nat -A PREROUTING -s 42:1::/32 -j ACCEPT
#${ip6} -t nat -A POSTROUTING -s 42:1::/32 ! -d 42:1::/48 -j MASQUERADE
'');
# This undoes the above command # This undoes the above command
postShutdown = optionalString isRouter '' postShutdown = ''
${pkgs.iptables}/bin/iptables -t nat -D POSTROUTING -s 10.244.245.0/24 -o ${ext-if} -j MASQUERADE ${ipt} -D FORWARD -i wiregrill -o retiolum -j ACCEPT
${pkgs.iptables}/bin/iptables -D FORWARD -i wiregrill -o retiolum -j ACCEPT ${ipt} -D FORWARD -i retiolum -o wiregrill -j ACCEPT
${pkgs.iptables}/bin/iptables -D FORWARD -i retiolum -o wiregrill -j ACCEPT ${ipt} -D FORWARD -i wiregrill -o wiregrill -j ACCEPT
${ipt} -D FORWARD -i wiregrill -o wiregrill -j ACCEPT
${ipt} -D FORWARD -o wiregrill -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
${pkgs.iptables}/bin/ip6tables -t nat -D PREROUTING -s 42:1::/32 -j ACCEPT ${ip6} -D FORWARD -i wiregrill -o retiolum -j ACCEPT
${pkgs.iptables}/bin/ip6tables -t nat -D POSTROUTING -s 42:1::/32 ! -d 42:1::/48 -j MASQUERADE ${ip6} -D FORWARD -i retiolum -o wiregrill -j ACCEPT
${pkgs.iptables}/bin/ip6tables -D FORWARD -i wiregrill -o retiolum -j ACCEPT ${ip6} -D FORWARD -i wiregrill -o wiregrill -j ACCEPT
${pkgs.iptables}/bin/ip6tables -D FORWARD -i retiolum -o wiregrill -j ACCEPT ${ip6} -D FORWARD -o wiregrill -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
'' ;
'' + (optionalString isRouter ''
${ipt} -t nat -D PREROUTING -s 10.244.245.0/24 -j ACCEPT
${ipt} -t nat -D POSTROUTING -s 10.244.245.0/24 -j MASQUERADE
#${ip6} -t nat -D PREROUTING -s 42:1::/32 -j ACCEPT
#${ip6} -t nat -D POSTROUTING -s 42:1::/32 ! -d 42:1::/48 -j MASQUERADE
'' );
ips = ips =
(optional (!isNull self.ip4) self.ip4.addr) ++ (optional (!isNull self.ip4) self.ip4.addr) ++
(optional (!isNull self.ip6) self.ip6.addr); (optional (!isNull self.ip6) self.ip6.addr);