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IP Telephony pen-test and VLAN's
From: "Frank Bussink" <frank_bussink () hotmail com>
Date: Tue, 16 May 2006 06:28:51 +0000


I'm trying to do a pen-test on a Cisco IPT system.

Cisco IP telephone are connected on the same network cable as the PC, but
are working on another vlan.
The access switches have a configuration like :
switchport mode access
switchport access vlan 123
switchport voice vlan 124

I think the negotation with the access switch is done by CDP but I'm not sure.

Does anyone have a tool that emulates the PC as a voice device in order to receive a dhcp lease on vlan 124, so I can start to inject ARP MITM with Cain for example ?

Kind regards

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