4.2 VLAN Hopping

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7 Terms

1
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Why do we define different VLANs?

Keept different parts of the network separate.

2
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What are two primary methods to hop to another VLAN?

Switch spoofing and double tagging.

3
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What is switch spoofing?

Pretend to be a switch, send trunk negotiation, an you can info to other switches.

4
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How can switch administration prevent switch spoofing?

Diable auto trunk negotiation and manually configure these trunks.

5
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What is double tagging?

Craft a packet that includes two VLAN tags.

6
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What is first tag of double tagging?

First native VLAN tag is removed by the first switch.

7
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What is the second VLAN tag in double tagging?

Second “fake” tag is now visible to the second switch and forwarded to target.