nix-bitcoin/modules/nix-bitcoin-services.nix

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{ config, lib, pkgs, ... }:
with lib;
let
defaultHardening = {
PrivateTmp = "true";
ProtectSystem = "full";
ProtectHome = "true";
NoNewPrivileges = "true";
PrivateDevices = "true";
MemoryDenyWriteExecute = "true";
ProtectKernelTunables = "true";
ProtectKernelModules = "true";
ProtectControlGroups = "true";
RestrictAddressFamilies = "AF_UNIX AF_INET AF_INET6";
RestrictNamespaces = "true";
LockPersonality = "true";
IPAddressDeny = "any";
};
in
{
inherit defaultHardening;
# nodejs applications apparently rely on memory write execute
nodejs = { MemoryDenyWriteExecute = "false"; };
# Allow tor traffic. Allow takes precedence over Deny.
allowTor = {
IPAddressAllow = "127.0.0.1/32 ::1/128";
};
# Allow any traffic
allowAnyIP = { IPAddressAllow = "any"; };
enforceTor = mkOption {
type = types.bool;
default = false;
description = ''
"Whether to force Tor on a service by only allowing connections from and
to 127.0.0.1;";
'';
};
}