On 6/17/12 10:24 , valdis.kletnieks@vt.edu wrote:
On Sun, 17 Jun 2012 13:10:59 -0400, Arturo Servin said:
Wouldn't BCP38 help?
The mail I'm replying to has as the first Received: line:
Received: from ?IPv6:2800:af:ba30:e8cf:d06f:4881:973a:c68? ([2800:af:ba30:e8cf:d06f:4881:973a:c68]) by mx.google.com with ESMTPS id b8sm25918444anm.4.2012.06.17.10.11.04 (version=TLSv1/SSLv3 cipher=OTHER); Sun, 17 Jun 2012 10:11:06 -0700 (PDT)
Obviously BCP38 doesn't help, as it's an established TCP connection so it can't be spoofed traffic (gotta ACK Google's ISN from the SYN-ACK) - unless Google is silly enough to *still* not be doing RFC1948 properly. I mean, Steve Bellovin wrote that literally last century. ;)
So - who owns 2800:af:ba30:e8cf:4881:973a:c68? And how does an LEO find that info quickly if they need to figure out who to hand a warrant to?
so first of you introduced a typo 2800:af:ba30:e8cf:4881:973a:c68 2800:af:ba30:e8cf:d06f:4881:973a:c68 which like the wrong address in a search warrant can be a problem. jjaeggli@cXX-XX-XX0> show route table inet6.0 2800:af:ba30:e8cf:4881:973a:c68 ^ invalid ip address or hostname: 2800:af:ba30:e8cf:4881:973a:c68 at '2800:af:ba30:e8cf:4881:973a:c68' jjaeggli@cXX-XX-XX0> show route table inet6.0 2800:af:ba30:e8cf:d06f:4881:973a:c68 inet6.0: 9674 destinations, 38494 routes (9674 active, 0 holddown, 19088 hidden) + = Active Route, - = Last Active, * = Both 2800:a0::/28 *[BGP/170] 1w2d 00:00:21, MED 50, localpref 200, from 2620:102:8004::10 AS path: 7922 12956 6057 I XXXX-XXXXX:~ jjaeggli$ whois -h whois.lacnic.net 2800:af:ba30:e8cf:d06f:4881:973a:c68 inetnum: 2800:a0::/28 status: allocated aut-num: N/A owner: Administracion Nacional de Telecomunicaciones ownerid: UY-ANTA-LACNIC responsible: ANTELDATA ANTEL URUGUAY address: Treinta y Tres, 1418, P.3 address: 11000 - Montevideo - country: UY phone: +598 2 9028819 [] owner-c: ANU tech-c: ANU abuse-c: ANU inetrev: 2800:a0::/28 nserver: NS1.ANTELV6.NET.UY nsstat: 20120615 AA nslastaa: 20120615 created: 20070115 changed: 20070115 nic-hdl: ANU person: ANTELDATA ANTEL URUGUAY e-mail: ipadmin@ANTEL.NET.UY address: Mercedes, 876, P. 2 address: 11100 - Montevideo - country: UY phone: +598 2 9002877 [] created: 20020910 changed: 20111014 scopes it to not being a problem you can solve with policy in the arin region.
*THAT* is the problem that needs solving.
(And who *does* own that IP? I admit not knowing. ;)
was trivial enough to find the origin, I have nothing to indicate that any of that information is wrong.