Something to add IPs to RouterOS-based router's whitelist. Not generalised, just for a specific purpose.
Should http auth as minimal security layer.
Should run sudo crontab -u www-data -e and add following to www-data's crontab:
*/1 * * * * /home/anthony/whitelister/cli_scripts/save_to_router.php --check_flag >/dev/null 2>&1