Tag: switch-spoofing

How to prevent VLAN Hopping in Cisco Switches
A malicious user can easily gain access to data on another VLAN to which he is not authorised to access using VLAN hopping. A VLAN Hoping attack can be launched by using a Switch Spoofing or Double Tagging of 802.1q trunking protocol. To have a quick insight into VLAN Hopping, click here.
You can prevent VLAN Hopping in Cisco Switches as follows:
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April 17, 2008
VLAN Hopping – Layer 2 Security exploit bypass Layer 3 security
VLAN Hopping is a Layer 2 security exploit by which a malicous user connected to a switchport on a Switch assigned to a VLAN can hop on and gain access to another VLAN which otherwise is not accessible. This security exploit allows the malicous hacker to bypass the IP Securities implemented at Layer 3.
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April 17, 2008

How to prevent VLAN Hopping in Cisco Switches