nanog mailing list archives
Re: AS PATH limits
From: Ken Chase <math () sizone org>
Date: Sat, 30 Sep 2017 12:47:26 -0400
I dont see that as the solution. Someone else will offend again. However, I also don't see trusting major backbones as our filters (for many other reasons). Our software should be handling what's effectively a buffer overflow or equivalent (beware long paths that are actually shellcode). Quagga among others seems to be subject to this bug, pre 0.99.23 or so (.99.24+ seems ok). So upgrading is a solution. There was also some chatter on the quagga mailing list on how it's more pleasant to stab your eyeballs out rather than constructing extremely long regexp's that might work as a filter. https://lists.quagga.net/pipermail/quagga-users/2017-September/thread.html /kc On Sat, Sep 30, 2017 at 05:30:03PM +0200, Niels Raijer said: >My message to NANOG about this from 12:31 UTC today is still in the moderation queue. I had opened a support case with Cogent before writing my message to NANOG and Cogent has let me know approximately 40 minutes ago that they have contacted their customer. > >Niels > > > >On 30 Sep 2017, at 17:09, sthaug () nethelp no wrote: > >>> If you're on cogent, since 22:30 UTC yesterday or so this has been happening >>> (or happened). >> >> Still happening here. I count 562 prepends (563 * 262197) in the >> advertisement we receive from Cogent. I see no good reason why we >> should accept that many prepends. >> >> Steinar Haug, Nethelp consulting, sthaug () nethelp no > -- Ken Chase - math () sizone org Guelph Canada
Current thread:
- Re: AS PATH limits, (continued)
- Re: AS PATH limits valdis . kletnieks (Sep 20)
- Re: AS PATH limits Tim Evens (Sep 20)
- Re: AS PATH limits Randy Bush (Sep 20)
- Re: AS PATH limits jim deleskie (Sep 20)
- Re: AS PATH limits Randy Bush (Sep 20)
- Re: AS PATH limits Tom Beecher (Sep 20)
- Re: AS PATH limits craig washington (Sep 22)
- RE: AS PATH limits Jakob Heitz (jheitz) (Sep 21)
- Re: AS PATH limits Ken Chase (Sep 30)
- Re: AS PATH limits sthaug (Sep 30)
- Re: AS PATH limits jim deleskie (Sep 30)
- Message not available
- Re: AS PATH limits Ken Chase (Sep 30)
- Re: AS PATH limits Christopher Morrow (Sep 30)
- Re: AS PATH limits Ken Chase (Sep 30)
- Re: AS PATH limits William Herrin (Sep 30)
- Re: AS PATH limits Hank Nussbacher (Sep 30)
- Re: AS PATH limits Mikael Abrahamsson (Sep 30)
- Re: AS PATH limits sthaug (Sep 30)