From 4cb18d5b6ff65a397abcde42bc6d2c2d7a0ce746 Mon Sep 17 00:00:00 2001 From: makefu Date: Sat, 3 Jun 2023 15:37:11 +0200 Subject: [PATCH] ma wireguard: ensure correct routing on server --- 2configs/wireguard/server.nix | 1 - 2configs/wireguard/wiregrill.nix | 70 ++++++++++++++++++++------------ 2 files changed, 44 insertions(+), 27 deletions(-) diff --git a/2configs/wireguard/server.nix b/2configs/wireguard/server.nix index bda2507..bb31981 100644 --- a/2configs/wireguard/server.nix +++ b/2configs/wireguard/server.nix @@ -17,7 +17,6 @@ in { # wireguard server externalInterface = ext-if; internalInterfaces = [ "wg0" ]; }; - networking.wireguard.interfaces.wg0 = { ips = [ "10.244.0.1/24" ]; listenPort = 51820; diff --git a/2configs/wireguard/wiregrill.nix b/2configs/wireguard/wiregrill.nix index 070f01e..922dc8c 100644 --- a/2configs/wireguard/wiregrill.nix +++ b/2configs/wireguard/wiregrill.nix @@ -15,12 +15,12 @@ in mkIf (hasAttr "wiregrill" config.krebs.build.host.nets) { "net.ipv6.conf.all.forwarding" = 1; "net.ipv4.conf.all.forwarding" = 1; }; - networking.nat = mkIf isRouter { - enable = true; - enableIPv6 = true; - externalInterface = ext-if; - internalInterfaces = [ "wiregrill" ]; - }; + #networking.nat = mkIf isRouter { + # enable = true; + # enableIPv6 = true; + # externalInterface = ext-if; + # internalInterfaces = [ "wiregrill" ]; + #}; networking.firewall = { allowedUDPPorts = [ self.wireguard.port ]; @@ -40,30 +40,48 @@ in mkIf (hasAttr "wiregrill" config.krebs.build.host.nets) { servers = [ "1.1.1.1" ]; }; - networking.wireguard.interfaces.wiregrill = { - 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 - ${pkgs.iptables}/bin/iptables -A FORWARD -i retiolum -o wiregrill -j ACCEPT + networking.wireguard.interfaces.wiregrill = let + ipt = "${pkgs.iptables}/bin/iptables"; + ip6 = "${pkgs.iptables}/bin/ip6tables"; + in { + postSetup = '' + ${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 - ${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 - ${pkgs.iptables}/bin/ip6tables -A FORWARD -i retiolum -o wiregrill -j ACCEPT - ''; + '' + (optionalString isRouter '' + #${ipt} -t nat -A PREROUTING -s 10.244.245.0/24 -j ACCEPT + #${ipt} -t nat -A POSTROUTING -s 10.244.245.0/24 ! -d 10.244.245.0/24 -j MASQUERADE + + #${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 - 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/iptables -D FORWARD -i wiregrill -o retiolum -j ACCEPT - ${pkgs.iptables}/bin/iptables -D FORWARD -i retiolum -o wiregrill -j ACCEPT + postShutdown = '' + ${ipt} -D FORWARD -i wiregrill -o retiolum -j ACCEPT + ${ipt} -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 - ${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 - '' ; + ${ip6} -D FORWARD -i wiregrill -o retiolum -j ACCEPT + ${ip6} -D FORWARD -i retiolum -o wiregrill -j ACCEPT + ${ip6} -D FORWARD -i wiregrill -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 = (optional (!isNull self.ip4) self.ip4.addr) ++ (optional (!isNull self.ip6) self.ip6.addr);