RE: No NetBios share + No Open Port = Safe Win98?

["David Gillett" <gillettdavid () fhda edu>]

> Huh? A DDoS usually means that someone tries to consume the 
> entire bandwidth of your uplink. How could any kind of 
> firewall mitigate that?
> AFAICS this can only be handled upstream by your provider and 
> his peers.

  A DoS -- distributed or otherwise -- usually relies on the 
attacker exhausting some resource.  Bandwidth is a popular choice,
perhaps partly because (as you say) it's hard to mitigate locally,
and partly because it's just really really simple.

  But there *are* other choices, such as a SYN flood which exhausts
session table entries.  Many perimeter security devices now attempt,
with varying degrees of success, to mitigate SYN flood attacks.  And
as additional DDoS methods become common, some of them may also be
amenable to local mitigation.

David Gillett



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