VLAN on Cisco Catalyst

VLAN on Cisco Catalyst

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VLAN on Cisco Catalyst Keme 09-10-2006
Posted by Volker Birk on September 11, 2006, 12:46 pm
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> Any pointers to reputable sources (web or print) for info on the nature
> of the flaws mentioned would be very welcome!

http://www.blackhat.com/presentations/bh-usa-02/bh-us-02-convery-switches.pdf

Yours,
VB.
--
Viel schlimmer als die Implementation von PHP ist jedoch das Design.

Rudolf Polzer in de.comp.security.misc

Posted by Keme on September 11, 2006, 12:54 pm
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Volker Birk wrote:
>
>>Any pointers to reputable sources (web or print) for info on the nature
>>of the flaws mentioned would be very welcome!
>
>
> http://www.blackhat.com/presentations/bh-usa-02/bh-us-02-convery-switches.pdf
>
> Yours,
> VB.

Black hats... of course. Excellent!

Thanks again.

Posted by Keme on September 11, 2006, 3:36 pm
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Volker Birk wrote:
>
>>Any pointers to reputable sources (web or print) for info on the nature
>>of the flaws mentioned would be very welcome!
>
>
> http://www.blackhat.com/presentations/bh-usa-02/bh-us-02-convery-switches.pdf
>
> Yours,
> VB.
Excellent info. Thanks again.

Guess I found a hole. Thought the spurious "network unavailable"
situations were due to something else, but it fits the bill of
intentionally created network loops. I disabled STP, thinking i might
save some overhead...
Will check the logs again when I'm back at the office tomorrow.

I have all the VLAN security precautions already in place, so I am
reassured that it's good enough for my security requirements.

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