Re: Vlan hopping

Hi,

Sherlock Holmes schrieb:
Hi All,

Does anyone know of Vlan Hopping? Can anyone explain how it works?

Yes I can.
Lets start that way. You have two switches with a trunk link between them.
On both side you have vlan v1 and vlan v2.

He creates a package with a vlan v2 packet header and puts this in a
vlan v1 packet. The Switch then transports that packet to the ports. On
the trunk port it removes the v1 header and what a surprise there is v2
header. Now it transports the Package to v2 port.

I'm currently didn't remember what the hacker has to do to bring the
switch to extract. I only remember something about switchport mode and
not set so access. There is a protocol a cisco switch use to find out
the port is a trunk or a access port.

When you have still questions left, send me an mal.

So long Alexander
.

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