infrastructure/modules/nixos/dgn-firewall/default.nix
Tom Hubrecht 88d9b8c3e3
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chore: Add license and copyright information
Signed-off-by: Tom Hubrecht <tom.hubrecht@dgnum.eu>
Acked-by: Ryan Lahfa <ryan.lahfa@dgnum.eu>
Acked-by: Maurice Debray <maurice.debray@dgnum.eu>
Acked-by: Lubin Bailly <lubin.bailly@dgnum.eu>
Acked-by: Jean-Marc Gailis <jean-marc.gailis@dgnum.eu> as the legal authority, at the time of writing, in DGNum.
Acked-by: Elias Coppens <elias.coppens@dgnum.eu> as a member, at the time of writing, of the DGNum executive counsel.
2024-12-13 12:41:38 +01:00

91 lines
2.4 KiB
Nix

# SPDX-FileCopyrightText: 2024 Tom Hubrecht <tom.hubrecht@dgnum.eu>
#
# SPDX-License-Identifier: EUPL-1.2
{
pkgs,
lib,
name,
...
}:
let
inherit (lib)
concatStringsSep
length
replicate
splitString
;
inherit (lib.lists) map;
c4 = "(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)";
mkV4' = p: concatStringsSep "\\." (p ++ (replicate (4 - (length p)) c4));
mkV4 = s: mkV4' (splitString "." s);
nft = s: [ "nft" ] ++ [ s ];
streams' = import ./streams.nix;
in
{
# Switch to nftables
networking.nftables.enable = true;
services.reaction = {
enable = true;
extraPackages = [ pkgs.nftables ];
runAsRoot = true;
logLevel = "WARN";
settings = {
patterns = {
ip = {
regex = "(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(?:.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}|(?:(?:[0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|(?:[0-9a-fA-F]{1,4}:){1,7}:|(?:[0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|(?:[0-9a-fA-F]{1,4}:){1,5}(?::[0-9a-fA-F]{1,4}){1,2}|(?:[0-9a-fA-F]{1,4}:){1,4}(?::[0-9a-fA-F]{1,4}){1,3}|(?:[0-9a-fA-F]{1,4}:){1,3}(?::[0-9a-fA-F]{1,4}){1,4}|(?:[0-9a-fA-F]{1,4}:){1,2}(?::[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:(?:(?::[0-9a-fA-F]{1,4}){1,6})|:(?:(?::[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(?::[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(?:ffff(?::0{1,4}){0,1}:){0,1}(?:(?:25[0-5]|(?:2[0-4]|1{0,1}[0-9]){0,1}[0-9]).){3,3}(?:25[0-5]|(?:2[0-4]|1{0,1}[0-9]){0,1}[0-9])|(?:[0-9a-fA-F]{1,4}:){1,4}:(?:(?:25[0-5]|(?:2[0-4]|1{0,1}[0-9]){0,1}[0-9]).){3,3}(?:25[0-5]|(?:2[0-4]|1{0,1}[0-9]){0,1}[0-9]))";
ignoreregex = map mkV4 [
"10" # Legacy wireguard
"129.199" # ENS
"100.80" # Netbird internal
];
ignore = [
"127.0.0.1"
"::1"
];
};
};
start = [
(nft ''
table inet reaction {
set ipv4bans {
type ipv4_addr
flags interval
auto-merge
}
set ipv6bans {
type ipv6_addr
flags interval
auto-merge
}
chain input {
type filter hook input priority 0
policy accept
ip saddr @ipv4bans drop
ip6 saddr @ipv6bans drop
}
}
'')
];
stop = [ (nft "delete table inet reaction") ];
streams = streams'.default // (streams'.${name} or { });
};
};
}