No. The router stays up. The tool I use is very fast. It floods the GIGE to the point that that interface is basically unusable but the router itself stays up only the session is torn down. I did preformed these tests in a lab and did not have full bgp routing tables etc ... so your mileage may vary. Donald.Smith@qwest.com GCIA http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xAF00EDCC pgpFingerPrint:9CE4 227B B9B3 601F B500 D076 43F1 0767 AF00 EDCC kill -13 111.2
-----Original Message----- From: Stephen J. Wilcox [mailto:steve@telecomplete.co.uk] Sent: Wednesday, May 05, 2004 10:16 AM To: Smith, Donald Cc: Steven M. Bellovin; Kurt Erik Lindqvist; kwallace@pcconnection.com; nanog@merit.edu Subject: RE: BGP Exploit
Of more interest.. does the router die (cpu load) before you brute force the sessions down
Steve
On Tue, 4 May 2004, Smith, Donald wrote:
I have seen 3 pubic ally available tools that ALL work. I have seen 2 privately tools that work. A traffic generator can be configured to successfully tear down bgp sessions.
Given src/dst ip and ports : I tested with a cross platform EBGP peering with md5 using
several of
the tools I could not tear down the sessions. I tested both Cisco and juniper BGP peering after code upgrades without md5 I could not tear down the sessions.
Donald.Smith@qwest.com GCIA http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xAF00EDCC pgpFingerPrint:9CE4 227B B9B3 601F B500 D076 43F1 0767 AF00 EDCC kill -13 111.2
-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Steven M. Bellovin Sent: Tuesday, May 04, 2004 11:54 AM To: Kurt Erik Lindqvist Cc: kwallace@pcconnection.com; nanog@merit.edu Subject: Re: BGP Exploit
In message <C4E8C22A-9DA6-11D8-B28B-000A95928574@kurtis.pp.se>, Kurt Erik Lindq vist writes:
Now that the firestorm over implementing Md5 has quieted
down a bit,
is anybody aware of whether the exploit has been used? Feel free to reply off list.
Even more interesting, did anyone manage to reproduce it?
I don't know if it's being used; I know that reimplementations of the idea are out there.
--Steve Bellovin, http://www.research.att.com/~smb