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Anonymous access to Voice VLAN using CDP
From: jpecou () gmail com
Date: 21 Jul 2006 16:56:56 -0000

Hey guys .. I Will try to make this short and sweet. At my job we are looking to implement a VOIP infrastructure. A 
typical infrastructure with voice and date usually will have both voice and data on a seperate VLAN. The phone will 
then plug into the ethernet port and the PC plug into the phone. Basically The phone becomes a trunk port for the PC) I 
have read that the way the phone gets place on the voice VLAN is through CDP. Appearently upon connecting to the switch 
the phone sends a CDP packet identifying it self and then gets placed on the Voice VLAN. I would love to attempt to put 
a pc on our voice VLAN. I know that yersinia has options for crafting CDP packets. Has anyone accomplished this and 
could some one give me a breif explanation of how I could do this. 

Thanks!

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