nanog mailing list archives

BGP filtering study resources (Was: CloudFlare issues?)


From: Job Snijders <job () ntt net>
Date: Tue, 25 Jun 2019 16:25:05 +0200

Dear Stephen,

On Tue, Jun 25, 2019 at 07:04:12AM -0700, Stephen Satchell wrote:
On 6/25/19 2:25 AM, Katie Holly wrote:
Disclaimer: As much as I dislike Cloudflare (I used to complain
about them a lot on Twitter), this is something I am absolutely
agreeing with them. Verizon failed to do the most basic of network
security, and it will happen again, and again, and again...

I used to be a quality control engineer in my career, so I have a
question to ask from the perspective of a QC guy:  what is the Best
Practice for minimizing, if not totally preventing, this sort of
problem?  Is there a "cookbook" answer to this?

(I only run edge networks now, and don't have BGP to worry about.  If
my current $dayjob goes away -- they all do -- I might have to get
back into the BGP game, so this is not an idle query.)

Somehow "just be careful and clueful" isn't the right answer.

Here are some resources which maybe can serve as a starting point for
anyone interested in the problem space:

presentation: Architecting robust routing policies
pdf: https://ripe77.ripe.net/presentations/59-RIPE77_Snijders_Routing_Policy_Architecture.pdf
video: https://ripe77.ripe.net/archive/video/Job_Snijders-B._BGP_Policy_Update-20181017-140440.mp4

presentation: Practical Everyday BGP filtering "Peerlocking"
pdf: http://instituut.net/~job/NANOG67_NTT_peerlocking_JobSnijders.pdf
video: https://www.youtube.com/watch?v=CSLpWBrHy10

RFC 8212 ("EBGP default deny") and why we should ask our vendors like
Cisco IOS, IOS XE, NX-OS, Juniper, Arista, Brocade, etc... to be
compliant with this RFC:
slides 2-14: http://largebgpcommunities.net/presentations/ITNOG3-Job_Snijders_Recent_BGP_Innovations.pdf
skip to the rfc8212 part: https://youtu.be/V6Wsq66-f40?t=854
compliance tracker: http://github.com/bgp/RFC8212

The NLNOG Day in Fall 2018 has a wealth of RPKI related presentations
and testimonies: https://nlnog.net/nlnog-day-2018/

Finally, there is the NLNOG BGP Filter Guide: http://bgpfilterguide.nlnog.net/
If you spot errors or have suggestions, please submit them via github
https://github.com/nlnog/bgpfilterguide

Please let me or the group know should you require further information,
I love talking about this topic ;-)

Kind regards,

Job


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