MicroNugget: Private VLANs

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In this video, Keith Barker covers private VLANs (virtual local area networks). He’ll walk through the process of gaining entry through a universal access point and then how traffic is separated into isolated or community VLANs. A key part of this video is understanding various port types, including promiscuous, isolated, and community ports.

Private VLANs allow you to control what traffic is allowed to be seen between two different ports on the same Cisco switch. Creating an effective structure here gives sysadmins quite a bit of influence over what users can access. Keith explains the difference between primary and secondary VLANs and how they interact, which includes an understanding of the variations between isolated and community VLANs. Traffic enters and exits the switch through a universal access point known as a promiscuous port, which is often the default gateway. Two other port types are isolated and community, each of which has unique capabilities that work together to create a private VLAN.

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• Cisco CCNA Security (210-260 IINS) | https://courses.cbt.gg/r6n
• Cisco CCNP Security | https://courses.cbt.gg/6t4
• Real-World VLAN Design and Implementation | https://courses.cbt.gg/b8z
• Information Security | https://courses.cbt.gg/463