nanog mailing list archives
RE: Finding asymmetric path
From: "Stefan Fouant" <sfouant () shortestpathfirst net>
Date: Fri, 27 Nov 2009 23:16:29 -0500
-----Original Message----- From: ML [mailto:ml () kenweb org] Sent: Friday, November 27, 2009 10:44 PM I'm reasonable certain a customer of ours who is using one of our netblocks is using a different reverse path to reach us. How might I figure out who is allowing them to source traffic from IPs that belong to us?
It's been my experience that many providers do not care what address is used for sourcing traffic. This is why it is not uncommon to see traffic sourced from RFC1918 space coming across various providers networks. If more providers adopted BCP 38 this wouldn't be a problem, but that doesn't seem to be happening anytime soon... I'd try to identify which providers the customer is connected to and take it from there... Stefan Fouant www.shortestpathfirst.net GPG Key ID: 0xB5E3803D
Current thread:
- Finding asymmetric path ML (Nov 27)
- Re: Finding asymmetric path Randy Bush (Nov 27)
- Re: Finding asymmetric path ML (Nov 27)
- Re: Finding asymmetric path Randy Bush (Nov 27)
- Re: Finding asymmetric path Christopher Morrow (Nov 27)
- Re: Finding asymmetric path Joe Greco (Nov 28)
- Re: Finding asymmetric path Joe Provo (Nov 28)
- Re: Finding asymmetric path Joe Greco (Nov 28)
- Re: Finding asymmetric path ML (Nov 27)
- Re: Finding asymmetric path Randy Bush (Nov 27)
- Re: Finding asymmetric path ML (Nov 28)
- Re: Finding asymmetric path Brielle Bruns (Nov 28)
- Re: Finding asymmetric path Duane Waddle (Nov 28)
- Re: Finding asymmetric path Arie Vayner (Nov 29)