def rule(event):
    if event.deep_get("destination", "port", default="") in [
        8080,
        21,
        80,
        23,
        50000,
        1521,
        27017,
        1433,
        11211,
        3306,
        15672,
        5900,
        5901,
        5902,
        5903,
        5904,
    ]:
        return True
    return False
