We have a few legacy servers that shortly will no longer be covered by Critical updates. These wont be able to be updated to a newer OS for a little while. We have a solid AV on them and they sit behind a decent friewall. Is there anything else we need to do to further protect these servers until we can upgrade them. None of them bar one touches the internet in any way.
Our reseller has suggested Trend Deep Security. Is this a good path to take / has anyone any experience with this product?