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Re: key change for TCP-MD5

  • From: Steven M. Bellovin
  • Date: Mon Jun 19 09:54:39 2006 
On Mon, 19 Jun 2006 08:59:45 -0400, Joe Maimon <[email protected]> wrote:

> 
> 
> Steven M. Bellovin wrote:
> 
> > I just submitted an I-D on TCP-MD5 key change.  Until it shows up in the
> > official repository, see
> > http://www.cs.columbia.edu/~smb/papers/draft-bellovin-keyroll2385-00.txt
> > Here's the abstract:
> > 
> >                 The TCP-MD5 option is most commonly used to secure
> >                 BGP sessions between routers.  However, changing
> >                 the long-term key is difficult, since the change
> >                 needs to be synchronized between different
> >                 organizations.
> >                 We describe single-ended strategies that will permit
> >                 (mostly) unsynchronized key changes.
> > 
> > 
> > Comments welcome.
> > 
> > 		--Steven M. Bellovin, http://www.cs.columbia.edu/~smb
> > 
> > 
> 
> This I-D says BGP implementations should be able to be configured with 
> multiple keys for peers and should do the Intelligent Thing with them.
> 
> Makes sense to me.
> 
> Did I read it right?
> 
Yes.

		--Steven M. Bellovin, http://www.cs.columbia.edu/~smb