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Re: Re: Can A Web Site Be Reliably Defended Against DoS Attack

• To: 'Liam Quin' <liam@w...>
• Subject: Re: Re: Can A Web Site Be Reliably Defended Against DoS Attacks?
• From: Rich Salz <rsalz@d...>
• Date: Fri, 06 Feb 2004 12:28:29 -0500
• Cc: "Bullard, Claude L (Len)" <clbullar@i...>, 'XML DEV' <xml-dev@l...>
• In-reply-to: <15725CF6AFE2F34DB8A5B4770B7334EE03F9F2B4@h...>
• References: <15725CF6AFE2F34DB8A5B4770B7334EE03F9F2B4@h...>
• User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4b) Gecko/20030507

>There were people who said the ISO networking stack was
>much better than TCP/IP

I asked Marshall Rose about this.  He is one of the best "protocol 
wonks" in the world.  As one of his accomplishments, he did a very 
comprehensive open source implementation of the ISO protocols known as 
ISODE; here's one of the release announcements (note the date of the 
announcement) 
http://www-mice.cs.ucl.ac.uk/multimedia/misc/tcp_ip/8808.mm.www/0096.html

I asked him about denial of service attacks and he said "clnp/tp4 
doesn't contain any security advances over ip/tcp."  He then added
"in one sense, an OSI-based Internet would be more secure against DDoS:
there would certainly be fewer servers, desktops, and routers, and they
would be running much, much slower..."

BTW, the Internet's end-to-end principal makes it architecturally 
possible to have mutually authenticated communicating endpoints. Search 
for "RSVP IETF" and you can see that years ago real time delivery 
guarantees and QoS was possible, too.  If TCP/IP is 80/20, then it's at 
least an 80/20 unlike most others in that: *its architecture allows the 
last 20% to be done.*  VoIP might be a driver for real QoS.

I don't know what GE engineers you spoke with, but it appears to me that 
they were showing off and deriding something they didn't fully understand.

"Once the rockets go up
who cares where they come down?
That's not my department,"
says Werner von Braun.
    --Tom Lehrer

	/r$

-- 
Rich Salz, Chief Security Architect
DataPower Technology                           http://www.datapower.com
XS40 XML Security Gateway   http://www.datapower.com/products/xs40.html
XML Security Overview  http://www.datapower.com/xmldev/xmlsecurity.html

• Follow-Ups:
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    • From: Bob Foster <bob@o...>

• References:
  • RE: Re: Can A Web Site Be Reliably Defended Against DoS Attacks?
    • From: "Bullard, Claude L (Len)" <clbullar@i...>

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