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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: how to protect name servers against cache corruption
On Wed, 30 Jul 1997, Thomas H. Ptacek wrote: > I suppose the operations context to this is, "hey, you realize DNS is > COMPLETELY BROKEN? What are your plans for dealing with the possibility > of someone posting exploits?" Do we simply stop using DNS? The same could be said of IP. If you forge packets and ICMP or UDP attack someone, as long as your packets cross a busy enough NAP (say one of the MAE's) you can do it with impunity and effectively knock entire ISP's off the internet. "And how do I configure my router for that?" Use access-lists to prevent your networks from accepting spoofed packets from your customers, or insist that they use such filters on their routers. ------------------------------------------------------------------ Jon Lewis <[email protected]> | Unsolicited commercial e-mail will Network Administrator | be proof-read for $199/message. Florida Digital Turnpike | ________Finger [email protected] for PGP public key_______
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