North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: traffic filtering
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. > [email protected] > > > ------------------------------------------- > > 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:\> > > > > >
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