I like that it is more secure than other solutions i have used in past years (like McAfee). It provides better insight into what my network looks for so we know when there are issues ahead before they happen. The price can be prohibitive to some companies but if you want something thats affordable this will do! There isn't much else about dbns as far as complaints go besides cost or lack thereof which may change depending who/what product one uses - most everyone knows how effective these products tend towards being very good at protecting computers from viruses etc..