{ config, lib, pkgs, ... }: { kw.fw.public.udp.ranges = [{ from = 60000; to = 61000; }]; kw.fw.private.udp.ranges = [{ from = 60000; to = 61000; }]; services.openssh = { enable = true; ports = lib.mkDefault [ 62954 ]; passwordAuthentication = false; challengeResponseAuthentication = false; permitRootLogin = lib.mkDefault "prohibit-password"; kexAlgorithms = [ "curve25519-sha256@libssh.org" ]; extraConfig = '' StreamLocalBindUnlink yes LogLevel VERBOSE ''; }; programs.mosh.enable = true; }