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RE: IP announce DOS

From: "Burton Strauss" <BStrauss3 () comcast net>
Date: Thu, 9 Jun 2005 12:41:05 -0500
Contact the upstream provider of the original ISP.They should care - since they're aggregating the routes and announcing themto other tier 1 ISPs, the upstream provider is the one going to be taggedwith bogus routes or route flap in the statistics.-----Burton -----Original Message-----From: Micheal Espinola Jr [mailto:michealespinola () gmail com] Sent: Thursday, June 09, 2005 10:41 AMTo: security-basics () securityfocus comSubject: Re: IP announce DOSI don't think there is anyone you can report them to that will take anytimely action against them.How have you attempted to escalate the issue with the old ISP?Have you contacted your new ISP to try to resolve the issue through them?On 6/8/05, Alex Thurlow <buddychrist () gmail com> wrote:
I'm not positive this is the correct list to ask, but it is a security concern, so I thought I would.  The company I work for had T1 lines running to our office provided by a local provider.  We had our own C block of IPs being announced by them and routed to us over those T1s.Our relationship with them went sour (for many reasons I won't get into here), and we had to move to a different provider.  We had the routing switched over to them.  Everything was fine.  Here it is a few weeks later, and suddenly our old provider starts announcing these IPs
again.
The end result is a partial DOS attack (hence writing to this list) as some people can't reach us.  They won't stop the announcement.  I don't know all the details on what they've said there as it's now gone to executives and legal people dealing with them.  Is there anything we can do here from a network standpoint?  Someone we can report them to?  How do people protect themselves from just anyone announcing IPs that aren't theirs?Thanks in advance,Alex Thurlow________________________________________SKYLISTEmail Marketing Solutions that Deliver Service You Can TrustYou are receiving this email messagefrom a representative of SKYLIST, Inc.13171 Pond Springs Road, Austin, TX 78729 Toll Free: 877.250.2922To cease all communication with SKYLIST, visithttp://www.skylist.net/unsubscribeor send an email to unsubscribe () skylist com
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