North American Network Operators Group

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Re: Packet anonymity is the problem?

  • From: Iljitsch van Beijnum
  • Date: Sun Apr 11 06:25:04 2004

On 11-apr-04, at 11:51, Yann Berthier wrote:

Ok, then explain to me how removing bugs from the code I run prevents
me from being the victim of denial of service attacks.

   It's the other way around in fact: if others were to run (more)
   secure code, there would be far less boxen used as zombies to launch
   ddos attacks against your infrastructure, to propagate worms, and to
   be used as spam relays.
You make two assumptions:

1. denial of service requires compromised hosts
2. good code prevents hosts from being compromised

I agree that without zombies launching a significant DoS is much more difficult, but it can still be done. Also, while many hosts run insecure software, the biggest security vulnerability in most systems is the finger resting on the left mouse button.

Also, waiting for others to clean up their act to be safe isn't usually the most fruitful approach.

   While it can sound a bit theorical (to hope that the "others" will
   run secure code), as the vast majority of users run OSs from one
   particular (major) vendor, an amelioration of said family of OSs
   would certainly benefit to all. Just think about all the recent
   network havocs caused by worms propagating on one OS platform ...
I'm not all that interested in plugging individual security holes. (Not saying this isn't important, but to the degree this is solvable things are moving in the right direction.) I'm much more interested in shutting up hosts after they've been compromised. This is something we absolutely, positively need to get a handle on.