nanog mailing list archives
Re: traffic filtering
From: "J.F. Noonan" <jfn () msc com>
Date: Tue, 22 Jan 2002 14:47:15 -0600 (CST)
Never mind. Brain several iterations behind keyboard. It was kindly pointed out to me offlist. I will now return to lurking where I belong. thx, On Tue, 22 Jan 2002 at 1:57pm J.F. Noonan wrote:
On Tue, 22 Jan 2002 at 12:34pm Joe Abley wrote: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.Not true. M$ is guilty of many evil things, but not this one. -- Joseph F. Noonan Rigaku/MSC Inc. jfn () msc com ------------------------------------------- Microsoft Windows 2000 [Version 5.00.2195] (C) Copyright 1985-2000 Microsoft Corp. C:\>tracert o2 Tracing route to o2.msc.com [12.110.0.218] over a maximum of 30 hops: 1 <10 ms <10 ms <10 ms netb.msc.com [192.246.38.10] 2 <10 ms <10 ms <10 ms 172.16.16.2 3 <10 ms 10 ms <10 ms 12.124.26.249 4 <10 ms 10 ms <10 ms gbr2-p51.hs1tx.ip.att.net [12.123.134.18] 5 <10 ms <10 ms 10 ms gbr3-p40.dlstx.ip.att.net [12.122.2.97] 6 10 ms 10 ms 10 ms gbr4-p60.dlstx.ip.att.net [12.122.1.138] 7 30 ms 30 ms 30 ms gbr4-p50.dvmco.ip.att.net [12.122.2.102] 8 30 ms 30 ms 30 ms gbr1-p20.dvmco.ip.att.net [12.122.5.22] 9 40 ms 40 ms 40 ms ar1-p3110.slkut.ip.att.net [12.123.207.5] 10 40 ms 40 ms 40 ms 12.127.107.26 11 50 ms 40 ms 60 ms fw-utah.msc.com [12.110.0.130] 12 40 ms 40 ms 60 ms o2.msc.com [12.110.0.218] Trace complete. C:\>
Current thread:
- Re: traffic filtering, (continued)
- 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)
- Re: traffic filtering E.B. Dreger (Jan 22)
- Re: traffic filtering Matthew S. Hallacy (Jan 23)