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Network Security Pen-Test
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Re: VoIP Hopper: New test tool

Subject: Re: VoIP Hopper: New test tool
Date: 12 Sep 2007 18:54:59 -0000
OMG this is music to my ears... For the last month I have been testing the 
Voice VLAN Vulnerability W/CDP in a lab at my job. I figured if you currently 
have a data vlan configured with Mac Sticky and 802.1x Authentication you might 
be setting your self back by adopting a voice VLAN that only requires a phone 
to send a CDP packet to basically "Authenticate or place it on the Voice side"  
I have been using Yersinia and CDP to spoof CDP packets of what would resemble 
a Cisco Phone. I noticed that the switch is seeing this traffic and placing me 
onto the voice VLAN instead of the data side but I could not for the life of me 
figure out how to communicate with the DHCP server and/or any other service for 
that matter. I am definately going to check this tool out to see I can finally 
close this chapter. Thanks!

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