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Re: General question on rfc1918
From: Joe Abley <jabley () ca afilias info>
Date: Tue, 13 Nov 2007 10:39:47 -0500
On 13-Nov-2007, at 10:35, Robert Bonomi wrote:
On 13-Nov-2007, at 10:08, Drew Weaver wrote:Hi there, I just had a real quick question. I hope this is found to be on topic. Is it to be expected to see rfc1918 src'd packets coming from transit carriers?You should not send packets with RFC1918 source or destination addresses to the Internet. Everybody should follow this advice. Ifeverybody did follow that advice, you wouldn't see the packets you areseeing.Really? What do you do if a 'network internal' device -- a legitimateuse of RFC1918 addresses -- discovers 'host/network unreachable' for anexternal-origin packet transitinng that device? <evil grin>
You drop the packet at your border before it is sent out to the Internet.
This is why numbering interfaces in the data path of non-internal traffic is a bad idea.
Packets which are strictly error/status reporting -- e.g. IMP 'unreachable', 'ttl exceeded', 'redirect', etc. -- should *NOT* be filtered at networkboundaries _solely_ because of an RFC1918 source address.
I respectfully disagree. Joe
Current thread:
- RE: General question on rfc1918, (continued)
- RE: General question on rfc1918 Darden, Patrick S. (Nov 13)
- Re: General question on rfc1918 Justin M. Streiner (Nov 13)
- RE: General question on rfc1918 Drew Weaver (Nov 13)
- Re: General question on rfc1918 Joe Greco (Nov 13)
- Re: General question on rfc1918 Sean Donelan (Nov 13)
- Another question on rfc1918 Michael Painter (Nov 23)
- Re: Another question on rfc1918 Robert E. Seastrom (Nov 23)
- Re: Another question on rfc1918 Randy Bush (Nov 23)
- Re: Another question on rfc1918 Bruce M Simpson (Nov 24)
- Re: General question on rfc1918 Robert Bonomi (Nov 13)
- Re: General question on rfc1918 Joe Abley (Nov 13)
- Re: General question on rfc1918 Phil Regnauld (Nov 13)
- Re: General question on rfc1918 Joe Abley (Nov 13)
- Re: General question on rfc1918 Paul Ferguson (Nov 13)