Bugtraq mailing list archives
Re: UDP packet handling weird behaviour of various operating systems
From: Niels Bakker <niels=bugtraq () bakker net>
Date: Fri, 27 Jul 2001 12:21:12 +0200
* stefan () mail allianztiriac ro (Stefan Laudat) [Fri 27 Jul 2001, 00:10 CEST]:
I have managed to kill a 7513 Cisco Router with DCEF enabled and loads of other speed hacks. Try it for yourself :)
This is documented behaviour for cisco routers. Packets addressed to the box itself are always process switched. The limit in a 7500 series router then becomes the RSP, not the CyBus bandwidth or amount of memory on the VIP2 cards. Taking cpu cycles away from the RSP will make the box fall over. Just don't let packets near your network if this is unacceptable behaviour for you. ObPlug: HAL2001 <URL:http://www.hal2001.org/> will host a dDoS discussion panel. As a possible title "dDoS: You ain't seen nothin' yet" was coined... Regards, -- Niels. -- "IP assumes non-hostile, non-lazy, and non-clueless nodes." -- Mark Mentovai
Current thread:
- UDP packet handling weird behaviour of various operating systems Stefan Laudat (Jul 25)
- Re: UDP packet handling weird behaviour of various operating systems Michal Zalewski (Jul 26)
- Re: UDP packet handling weird behaviour of various operating systems Kevin Day (Jul 26)
- Re: UDP packet handling weird behaviour of various operating systems Cade Cairns (Jul 26)
- Re: UDP packet handling weird behaviour of various operating systems Michal Zalewski (Jul 26)
- Re: UDP packet handling weird behaviour of various operating systems Cade Cairns (Jul 27)
- Re: UDP packet handling weird behaviour of various operating systems aland (Jul 27)
- Re: UDP packet handling weird behaviour of various operating systems Stefan Laudat (Jul 26)
- Re: UDP packet handling weird behaviour of various operating systems Michal Zalewski (Jul 26)
- Re: UDP packet handling weird behaviour of various operating systems Stefan Laudat (Jul 26)
- Re: UDP packet handling weird behaviour of various operating systems Niels Bakker (Jul 27)
- RE: UDP packet handling weird behaviour of various operating systems David LeBlanc (Jul 26)
- Re: UDP packet handling weird behaviour of various operating systems Radu-Adrian Feurdean (Jul 27)
- Re: UDP packet handling weird behaviour of various operating systems Michal Zalewski (Jul 26)
- Re: UDP packet handling weird behaviour of various operating systems trop (Jul 26)
- Re: UDP packet handling weird behaviour of various operating systems Paul Sack (Jul 26)
- Re: UDP packet handling weird behaviour of various operating systems Stefan Laudat (Jul 26)
- Re: UDP packet handling weird behaviour of various operating systems Sean Hunter (Jul 27)
- Re: UDP packet handling weird behaviour of various operating systems Sean Hunter (Jul 28)
- Re: UDP packet handling weird behaviour of various operating systems Adrian Chadd (Jul 27)
- Re: UDP packet handling weird behaviour of various operating systems Jarno Huuskonen (Jul 27)
- solaris in.lpd patch where/when? Jake Luck (Jul 28)
- Re: UDP packet handling weird behaviour of various operating systems Stefan Laudat (Jul 26)