forked from DGNum/infrastructure
Tom Hubrecht
88d9b8c3e3
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.
50 lines
1 KiB
Nix
50 lines
1 KiB
Nix
# SPDX-FileCopyrightText: 2024 Tom Hubrecht <tom.hubrecht@dgnum.eu>
|
|
#
|
|
# SPDX-License-Identifier: EUPL-1.2
|
|
|
|
let
|
|
act = a: [
|
|
"nft46"
|
|
"${a} element inet reaction ipvXbans { <ip> }"
|
|
];
|
|
|
|
journalctl = u: [
|
|
"journalctl"
|
|
"-fn0"
|
|
"-u"
|
|
"${u}.service"
|
|
];
|
|
|
|
ban = after: {
|
|
ban.cmd = act "add";
|
|
unban = {
|
|
inherit after;
|
|
|
|
cmd = act "delete";
|
|
};
|
|
};
|
|
|
|
available = {
|
|
ssh = {
|
|
cmd = journalctl "sshd";
|
|
|
|
filters = {
|
|
failedlogin = {
|
|
regex = [
|
|
"authentication failure;.*rhost=<ip>"
|
|
"Connection reset by authenticating user .* <ip>"
|
|
"Connection closed by invalid user .* <ip> port .*"
|
|
"Failed password for .* from <ip>"
|
|
"Invalid user .* from <ip> port .*"
|
|
"Unable to negotiate with <ip> port .*"
|
|
];
|
|
actions = ban "48h";
|
|
};
|
|
};
|
|
};
|
|
};
|
|
in
|
|
|
|
builtins.mapAttrs (_: builtins.foldl' (a: s: a // { ${s} = available.${s}; }) { }) {
|
|
default = [ "ssh" ];
|
|
}
|