February 2018
Intermediate to advanced
396 pages
9h 38m
English
Content preview from Advanced Infrastructure Penetration Testing
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VLAN double tagging
This attack is sometimes called a double 802.1q encapsulation attack, which is done by sending 802.1q double encapsulated frames. In general, switches only perform one decapsulation operation at a time. Thus, they will strip off the first and send back out the second. This attack is possible, only if the attack and the target are on the same VLAN, even if trunk ports are off:
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