Traffic like Address Resolution Protocol (ARP ) requests will always be visible on every port, for example. If you are definitely seeing all packets from every device, then adding a switch would provide protection from opportunistic packet sniffing.
Related Q&A from Peter Wood
When sensitive documents are frequently travelling back and forth between a company and its business partners, email security becomes very important.... Continue Reading
In this expert response, Peter Wood explains the difference between database activity monitoring systems and security information and event ... Continue Reading
In this expert response, Peter Wood outlines some alternatives to NAC systems, and explains why, sometimes, NAC systems really are the best choice. Continue Reading