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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: If you’re new here, you may want to subscribe to my RSS feed. Thanks for visiting!Read More →