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VLAN Hopping is an exploitation method used to attack a network with multiple VLANs. VLAN hopping operates at which layer of the OSI model?
Layer 2 - Data Link
Layer 4 - Transport
Layer 5 - Session
Layer 3 - Network
VLAN hopping is a computer security exploit, a method of attacking networked resources on a Virtual LAN. It is a layer 2 network based attack where the user injects frames into VLAN that they are not part of. The basic concept behind all VLAN hopping attacks is for an attacking host on a VLAN to gain access to traffic on other VLANs that would normally not be accessible. There are two primary methods of VLAN hopping: switch spoofing and double tagging. Both attack vectors can be easily mitigated with proper switchport configuration. Yersinia is a GNU/Linux framework that takes advantage of some of the weaknesses in different network protocols. It can be used for analyzing and testing deployed networks and systems
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