This still shouldn't be online. They can be networked, if you need remote monitoring, but that's different from being online (at least in my definition).
Obviously it's a question of cost and convenience, and just dumping your appliance on the internet and make it phone home is going to be the cheaper option. If you want security those appliances goes on a separate network, which cannot reach the internet.
Obviously it's a question of cost and convenience, and just dumping your appliance on the internet and make it phone home is going to be the cheaper option. If you want security those appliances goes on a separate network, which cannot reach the internet.