dotfiles/modules/nixos/services/sshd.nix
2024-01-09 23:11:11 -05:00

44 lines
1.2 KiB
Nix

# SSHD service for allowing SSH access to my machines.
{ config, pkgs, lib, ... }: {
options = {
publicKey = lib.mkOption {
type = lib.types.nullOr lib.types.str;
description = "Public SSH key authorized for this system.";
default = null;
};
permitRootLogin = lib.mkOption {
type = lib.types.str;
description = "Root login settings.";
default = "no";
};
};
config = lib.mkIf config.services.openssh.enable {
services.openssh = {
ports = [ 22 ];
allowSFTP = true;
settings = {
GatewayPorts = "no";
X11Forwarding = false;
PasswordAuthentication = false;
PermitRootLogin = config.permitRootLogin;
};
};
users.users.${config.user}.openssh.authorizedKeys.keys =
lib.mkIf (config.publicKey != null) [ config.publicKey ];
# Implement a simple fail2ban service for sshd
services.sshguard.enable = true;
# Add terminfo for SSH from popular terminal emulators
# Fix: terminfo now installs contour, which is broken on ARM
# - https://github.com/NixOS/nixpkgs/pull/253334
# - Will disable until fixed
environment.enableAllTerminfo = pkgs.stdenv.isLinux && pkgs.stdenv.isx86_64;
};
}