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North American Network Operators Group

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Re: Cisco says attacks are due to operational practices

  • From: Chris Cappuccio
  • Date: Thu Feb 10 21:38:52 2000

I wasn't talking about filtering IPs, I'm talking about filtering by port.
I have no problem with IP based filtering ;)

On Thu, 10 Feb 2000, Paul Ferguson wrote:

 | At 06:13 PM 02/10/2000 -0800, Chris Cappuccio wrote:
 | 
 | >Filtering incoming our outgoing ports for anybody's network but your own (not
 | >your customer's) is wrong.  You know specifically what apps you are running.
 | >How can you know what your customer is running or what they want to do ?
 | 
 | Excuse me, but can you please tell me what "application" a downstream
 | customer might be running which originates packets for traffic with
 | source addresses which they are not advertising (or you are advertising
 | for them)?
 | 
 | - paul
 | 
 | 

---
Gates' Law: Every 18 months, the speed of software halves.






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