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nixos/shill: Replicate port forwards for internal routing
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Jack O'Sullivan 2023-12-11 16:53:09 +00:00
parent 20a3873d25
commit 5686aa1a01
1 changed files with 14 additions and 2 deletions
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16
nixos/boxes/colony/vms/shill/default.nix
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@ -1,7 +1,7 @@
{ lib, ... }:
let
inherit (lib.my) net;
inherit (lib.my.c.colony) domain prefixes;
inherit (lib.my) net nft;
inherit (lib.my.c.colony) domain prefixes firewallForwards;
in
{
imports = [ ./containers ];
@ -151,6 +151,7 @@ in
firewall = {
tcp.allowed = [ 19999 ];
trustedInterfaces = [ "ctrs" ];
nat.forwardPorts."${allAssignments.estuary.internal.ipv4.address}" = firewallForwards allAssignments;
extraRules = ''
table inet filter {
chain forward {
@ -158,6 +159,17 @@ in
iifname vms oifname ctrs accept
}
}
table inet nat {
# Hack to fix our NAT situation with internal routing
# We need to snat to our public IP, otherwise on the return path from e.g. middleman it will
# try to forward packet directly with its own IP, bypassing our carefully crafted DNAT...
chain ${nft.dnatChain allAssignments.estuary.internal.ipv4.address} {
ct mark set 0x1337
}
chain postrouting {
ct mark 0x1337 snat ip to ${assignments.internal.ipv4.address}
}
}
'';
};