nanog mailing list archives
Re: traffic filtering
From: Joe Abley <jabley () automagic org>
Date: Tue, 22 Jan 2002 12:34:57 -0500
On Mon, Jan 21, 2002 at 05:53:16PM -0500, Stephen Griffin wrote:
I'm curious about how many networks completely filter all traffic to any ip address ending in either ".0" or ".255".
I heard recently that Windows 2000 will refuse to send packets to addresses with the least-significant octet 255, if the most- significant octet indicates the address lies in a pre-CIDR class C. So, for example, 192.168.0.255 would be unreachable from a windows 2000 machine, regardless of the fact that it might be a legitimate host numbered within 192.168.0.0/23. This seems like a strange design decision for windows 2000, if it's real. But, if it *is* true, the answer to your question "is this kind of filtering common" might be a strong "yes", at least in the Microsoft-populated extreme network edge. Joe
Current thread:
- traffic filtering Stephen Griffin (Jan 21)
- Re: traffic filtering Jared Mauch (Jan 21)
- Re: traffic filtering Jake Khuon (Jan 21)
- Re: traffic filtering Stephen Griffin (Jan 21)
- Re: traffic filtering John Kristoff (Jan 21)
- Re: traffic filtering Stephen Griffin (Jan 21)
- Re: traffic filtering Jim Segrave (Jan 22)
- Re: traffic filtering Avleen Vig (Jan 21)
- Re: traffic filtering Joe Abley (Jan 22)
- Re: traffic filtering E.B. Dreger (Jan 22)
- Re: traffic filtering J.F. Noonan (Jan 22)
- Re: traffic filtering J.F. Noonan (Jan 22)
- Re: traffic filtering Joe Abley (Jan 22)
- Re: traffic filtering Jay Ford (Jan 24)
- Re: traffic filtering Stephen J. Wilcox (Jan 24)
- Re: traffic filtering Jared Mauch (Jan 21)
- Re: traffic filtering Niels Bakker (Jan 27)
- <Possible follow-ups>
- Re: traffic filtering Stephen Griffin (Jan 22)
- Re: traffic filtering E.B. Dreger (Jan 22)