What they do, why they're useful, and how to get started A virtual local area network is a logical subnetwork that groups a collection of devices from different physical LANs. Large business computer ...

Four vulnerabilities in the widely adopted 'Stacked VLAN' Ethernet feature allows attackers to perform denial-of-service (DoS) or man-in-the-middle (MitM) attacks against network targets using ...

VLANs break a physical LAN into several logical broadcast domains. Each LAN station hears traffic sent by its own VLAN but receives nothing from stations in other VLANs -- not even from those ...

In the IP based Ethernet networks, data and voice services are often transmitted simultaneously over the network. Voice traffic, in particular, requires a higher forwarding priority than data traffic.

Question: When is a network switch not really a switch? Answer: When you’ve configured a Virtual LAN. Then it’s a router…sort of. Don’t worry. Your networking equipment doesn’t need psychotherapy. But ...

The IEEE’s 802.1Q standard was developed to address the problem of how to break large networks into smaller parts so broadcast and multicast traffic wouldn’t grab more bandwidth than necessary. The ...

Network vendors have fallen prey to vulnerabilities in Ethernet VLAN protocol implementations. While only Cisco and Juniper Networks are confirmed to have vulnerable products at this stage, a notice ...

A VLAN, or virtual local area network, works in the same way as a physical LAN with the exception that the hosts don't need to be located on the same physical network to be linked. Segmentation is the ...

I can easily enough get into the switch and setup a VLAN with several ports, and I think I'm doing everything correctly in pfSense to get that VLAN up and running, but nothing is working. Is there a ...

Buying a router for a business isn’t as simple as picking a consumer product with the best ratings from an online merchant or the best price on the shelf at a local electronics superstore. Your ...