Understanding Dot1x Port-based Authentication What is Dot1x Port-based Authentication IEEE 802.1x (802.1x) is a standards-based approach for providing port-based network access. 802.1x is a layer2 protocol that defines how Extensible Authentication Protocol (EAP) frames are encapsulated. 802.1x also defines hardware components, such as the figure below: Supplicant: PCs, laptops, other devices that support 802.1x standard.… [Read more…]
February 11, 2010
VLAN Hoping Attack VLAN Hopping Attack allows traffic from one Vlan to pass into another VLAN, without first being route. VLAN hopping can disable any security measures users may have in place on the device which maps routes between the VLAN’s. Hackers use VLAN hopping to capture sensitive information such as bank account details and… [Read more…]
August 26, 2009
So, it has been awhile since I’ve actually put some technical stuff out on my blog. Well, I interviewed a guy today and he was asked about HSRP. Essentially he was asked…what can you tell me about HSRP? The guy didn’t know. So this is for you, Mr. Interview Guy. It’s something that you need to know… [Read more…]
February 24, 2010
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