Question

An attacker sends double-tagged 802.1Q frames over a trunk link.

This is called _______ ___________.
A) VLAN Spoofing
B) MAC Spoofing
C) Double Tagging
D) Frame Injection

Answer 1

An attacker sending double-tagged 802.1Q frames for VLAN exploitation is engaging in Double Tagging.

Step-by-step explanation:

An attacker sending double-tagged 802.1Q frames over a trunk link to exploit VLAN tagging is referred to as Double Tagging. An attacker sending double-tagged 802.1Q frames for VLAN exploitation is engaging in Double Tagging.

In this type of attack, the attacker adds two VLAN tags to a frame where the first tag is for the native VLAN (which is often untagged on the switch) and the second is for the target VLAN.

This exploit takes advantage of the way some switches handle VLAN tags, allowing the frame to be forwarded to a VLAN that the attacker has not been authorized to access.