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Old 29th July, 2003, 04:31 PM
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cloasters cloasters is offline
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Join Date: September 2001
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Quote:
Originally Posted by Áedán
The cisco hole? Yeah, basically, all that was required was that the IOS device was sent packets with a certain IP ID on them, and that the TTL be 1 or 0. This appears to cause IOS to choke, and fail to remove the packet from the processing queue.

As that packet is stuck at the head of the processing queue, no packets after it could be processed. The workaround was to do some packet filtering, and filter the packets until you could upgrade the version of IOS.
What I've seen about addressing this bug in Cisco routers is opaque to this particular dummy. Cisco lays out this information in a logical, easy to understand manner. Not exactly.
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