North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Get as much IP space as you ever dreamed of, was: Re: Looking to buy IPv4 addresses from class C swamp
On Mon, 28 Apr 2003, Jack Bates wrote: > > Kai Schlichting wrote: > > An example covering this exact case: 9.0.0.0/8 is such a space, owned by IBM. > > > > Some illicit use documented at www.ris.ripe.net : > > > > 9.184.112.0/20 > > 9.186.144.0/20 , both from AS 3786 (dacom.co.kr, bora.net) , since at > > least 2002/12/26. > > > > IBM confirmed the bogosity of these announcements on 04/07, the routes > > got withdrawn on 04/14. > > Actually, IBM confirmed that any announcements from 9/8 were guaranteed > to be bogus. IBM uses 9/8 internally. They use NAT to convert 9/8 > addresses back to routed addresses. One can imagine that IBM has a large > internal network globally with interconnects to various partners. Yet > many companies have found that utilization of NAT when communicating > with the public networks is a sound addition to security. Further to my earlier post.. a large global private network requiring unique space at many sites, they use 9/8 .. why not use 10/8 ??? (renumbering reasons aside that is!) Recall the counter argument from Stephen Sprunk was that it needed a per site allocation from a registry, and yet these guys are managing just fine without it! Steve > > Private peering follows different rulesets than public. Many respectable > organizations still don't understand that you can Peer privately without > exporting each others advertisements in order to save expenditures to > third parties when transiting traffic between the two networks. Security > percautions are also treated different. What you would offer a partner > sometimes exceeds the access you'd allow the public. > > While there are benefits to registering space that isn't routed on the > public network, such space needs to be declared as such. Until that > time, people will continue to hijack those networks and use them for > their own ends. > > -Jack > >
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