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Networking

Misconfigured Open DNS Resolvers Key To Massive DDoS Attacks 179

msm1267 writes with an excerpt From Threat Post: "While the big traffic numbers and the spat between Spamhaus and illicit webhost Cyberbunker are grabbing big headlines, the underlying and percolating issue at play here has to do with the open DNS resolvers being used to DDoS the spam-fighters from Switzerland. Open resolvers do not authenticate a packet-sender's IP address before a DNS reply is sent back. Therefore, an attacker that is able to spoof a victim's IP address can have a DNS request bombard the victim with a 100-to-1 ratio of traffic coming back to them versus what was requested. DNS amplification attacks such as these have been used lately by hacktivists, extortionists and blacklisted webhosts to great success." Running an open DNS resolver isn't itself always a problem, but it looks like people are enabling neither source address verification nor rate limiting.

Comment Re:Discovery and limitations (Score 1) 205

The more important fundamental laws and facts of physical science have all been discovered, and these are so firmly established that the possibility of their ever being supplanted in consequence of new discoveries is exceedingly remote.

I'm not saying you're wrong. Just that people who have said similar things in the past have all been wrong.

Comment Re:The Invisible Unicorn Argument. (Score 1) 238

The argument there gets a bit more complex, but you can get the basic point by looking at entropy. An unordered system is not likely to become ordered over time, and it cannot do so over an infinite time, which it would need to (it would eventually degenerate into a final stable state, unlike the universe we see around us with non-homogeneous elements).

Why can't it do so over an infinite time-period? If it's unlikely to become ordered over [a finite] time, then over an infinite time-period it's a certainty. Why would there be a final stable state? No thermodynamic system has one.

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