North American Network Operators Group

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Re: BCP38 making it work, solving problems

  • From: Patrick W Gilmore
  • Date: Wed Oct 20 02:38:30 2004

On Oct 19, 2004, at 1:14 PM, JP Velders wrote:

jacking the connection is in a completely different class as someone
bombarding you with a bunch of forged BGP packets to close down a
session. Without that MD5 checksum you are quite vulnerable to that. I
haven't seen a vendor come up with a solution to that, because the
problem is on a much more vendor-neutral level...
We haven't talked about this in a few months, so what the hell....

Have you actually done the work to see how many packets it takes to shut down a session with and without MD5 enabled? (The question is rhetorical, since your post shows that you have not.)

Back on topic, the MD5 debate is not an exact apples-to-apples comparison of BCP38. Stopping people from shutting down your BGP sessions is not the same as letting your customer hurt me while claiming to be a third party.

Put another way, MD5 on BGP sessions is a personal choice per network. I made my decision. You are welcome and encouraged to make your own. Neither will effect the other, except where our two networks meet. (And then I am positive we can come to some mutual understanding.)

BCP38 is not a personal decision. Not implementing it hurts the whole Internet, not just your little corner.