Question Convention: VLAN 1 Vulnerability to VLAN Hopping

Packet Life has a great reminder why we shouldn’t automatically accept “conventional wisdom” and “best practices” in our work, using the long-held conventional nugget that VLAN 1 and user traffic don’t mix because it leaves the network vulnerable to VLAN hopping attacks as a prime example.

Specifically, network engineers have been preaching for years that allowing user [...]