nanog mailing list archives
Re: Managing ACL exceptions (was Re: Filter NTP traffic by packet size?)
From: Jay Ashworth <jra () baylink com>
Date: Fri, 28 Feb 2014 11:09:09 -0500 (EST)
----- Original Message -----
From: "Ray Soucy" <rps () maine edu>
When I was looking at the website before I didn't really see any mention of uRPF, just the use of ACLs, maybe I missed it, but it's not encouraging if I can't spot it quickly. I just tried a search and the only thing that popped up was a how-to for a Cisco 7600 VXR.
Well, I do mention it, right there on the home page: """ BCP38 filtering to block these packets is most easily handled right at the very edge of the Internet: where customer links terminate in the first piece of provider 'aggregation' gear, like a router, DSLAM, or CMTS. Much to most of this gear already has a 'knob' which can be turned on, which simply drops these packets on the floor as they come in from the customer's PC. """ I simply didn't *name* the knob, cause the detail seemed out-of-scope for that context. Where it would get named would be on the "information for Audience" pages relevant to access providers, which I have not written because -- not being a provider -- I have insufficient background to be accurate. We welcome contributions from people in those positions... you, perhaps? Be bold! :-) Cheers, -- jra -- Jay R. Ashworth Baylink jra () baylink com Designer The Things I Think RFC 2100 Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274
Current thread:
- RE: Filter NTP traffic by packet size?, (continued)
- RE: Filter NTP traffic by packet size? Staudinger, Malcolm (Feb 25)
- Re: Filter NTP traffic by packet size? Nick Hilliard (Feb 25)
- Re: Filter NTP traffic by packet size? Blake Hudson (Feb 25)
- Re: Filter NTP traffic by packet size? Keegan Holley (Feb 26)
- Re: Filter NTP traffic by packet size? Brandon Galbraith (Feb 26)
- Managing ACL exceptions (was Re: Filter NTP traffic by packet size?) Jay Ashworth (Feb 26)
- Re: Managing ACL exceptions (was Re: Filter NTP traffic by packet size?) Keegan Holley (Feb 27)
- Re: Managing ACL exceptions (was Re: Filter NTP traffic by packet size?) Ray Soucy (Feb 28)
- Re: Managing ACL exceptions (was Re: Filter NTP traffic by packet size?) Jay Ashworth (Feb 28)
- Re: Managing ACL exceptions (was Re: Filter NTP traffic by packet size?) Ray Soucy (Feb 28)
- Re: Managing ACL exceptions (was Re: Filter NTP traffic by packet size?) Jay Ashworth (Feb 28)
- Re: Managing ACL exceptions (was Re: Filter NTP traffic by packet size?) Christopher Morrow (Feb 28)
- Re: Filter NTP traffic by packet size? Valdis . Kletnieks (Feb 26)
- Re: Filter NTP traffic by packet size? Jared Mauch (Feb 26)
- Re: Filter NTP traffic by packet size? Randy Bush (Feb 26)
- Re: Filter NTP traffic by packet size? Frank Habicht (Feb 26)
- Re: Filter NTP traffic by packet size? Jimmy Hess (Feb 26)
- Re: Filter NTP traffic by packet size? Niels Bakker (Feb 28)
- Re: Filter NTP traffic by packet size? Randy Bush (Feb 28)
- Re: Filter NTP traffic by packet size? Niels Bakker (Feb 28)
- Re: Filter NTP traffic by packet size? Robert Drake (Feb 26)