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Apply tested client configuration 

Adds an additional route, but doesn't enforce it so other apps will remain the same, but smtp can use tunnel for sending. Also sends replies through the tunnel if connection arrives on the tunnel.
Better have something tested and working before I start doing "perfect".

Signed-off-by: Egor Savkin <es@m-labs.hk>
This commit is contained in:
Egor Savkin 2024-09-11 11:04:36 +08:00
parent 367d5a8c4c
commit 7b98b49fcd
1 changed files with 21 additions and 2 deletions
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23
nixbld-etc-nixos/configuration.nix
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@ -281,13 +281,32 @@ in
};
wireguard.interfaces = {
intl0 = {
ips = [ "10.42.0.2/32" ];
ips = [ "10.42.0.2/30" ];
listenPort = 51820;
privateKeyFile = "/path/to/private/key";
privateKeyFile = "/path/to/private/key"; # just `wg-quick genkey > /path/to/private/key`
postUp = ''
${pkgs.iproute2}/bin/ip rule add from all fwmark 1 lookup 51820
${pkgs.iproute2}/bin/ip route add default via 10.42.0.1 dev intl0 table 51820
${pkgs.iptables}/bin/iptables -t mangle -A PREROUTING -i intl0 -p tcp -j MARK --set-mark 1
${pkgs.iptables}/bin/iptables -A OUTPUT -o intl0 -m connmark --mark 1 -j ACCEPT
${pkgs.iptables}/bin/iptables -A INPUT -i intl0 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
${pkgs.iptables}/bin/iptables -t mangle -A PREROUTING -m conntrack --ctstate NEW -i intl0 -p tcp -j CONNMARK --save-mark
${pkgs.iptables}/bin/iptables -t mangle -A OUTPUT -m conntrack --ctstate ESTABLISHED,RELATED -j CONNMARK --restore-mark
'';
preDown = ''
${pkgs.iproute2}/bin/ip rule del from all fwmark 1 lookup 51820
${pkgs.iproute2}/bin/ip route del default via 10.42.0.1 dev intl0 table 51820
${pkgs.iptables}/bin/iptables -t mangle -D PREROUTING -i intl0 -p tcp -j MARK --set-mark 1
${pkgs.iptables}/bin/iptables -D OUTPUT -o intl0 -m connmark --mark 1 -j ACCEPT
${pkgs.iptables}/bin/iptables -D INPUT -i intl0 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
${pkgs.iptables}/bin/iptables -t mangle -D PREROUTING -m conntrack --ctstate NEW -i intl0 -p tcp -j CONNMARK --save-mark
${pkgs.iptables}/bin/iptables -t mangle -D OUTPUT -m conntrack --ctstate ESTABLISHED,RELATED -j CONNMARK --restore-mark
'';
peers = [
{
publicKey = "4RozbGZ9ENCjvJXGMB5aK1oqyZfD4UCarEHjSckwVGI=";
allowedIPs = [ "0.0.0.0/0" ];
allowedIPsAsRoutes = false;
endpoint = "5.78.86.156:51820";
persistentKeepalive = 25;
}