[33097] in North American Network Operators' Group
Re: RFC1918 addresses to permit in for VPN?
daemon@ATHENA.MIT.EDU (Andrew Brown)
Fri Dec 29 11:34:16 2000
Date: Fri, 29 Dec 2000 11:31:17 -0500
From: Andrew Brown <twofsonet@graffiti.com>
To: nanog@merit.edu
Message-ID: <20001229113117.A28953@noc.untraceable.net>
Reply-To: Andrew Brown <atatat@atatdot.net>
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In-Reply-To: <20001229072514.4261.cpmta@c004.sfo.cp.net>; from sean@donelan.com on Thu, Dec 28, 2000 at 11:25:14PM -0800
Errors-To: owner-nanog-outgoing@merit.edu
speaking of rfc1918 addresses...one of my machines at home got poked
at, so i did the usual thing which was perhaps waste about five
minutes poking back from some place else if i feel like it. what i
saw piqued my interest:
% traceroute -f12 213.123.76.29
traceroute to 213.123.76.29 (213.123.76.29), 30 hops max, 40 byte packets
12 core1-pos10-0.bletchley.ukcore.bt.net (62.6.196.217) 349.804 ms 391.793 ms 354.819 ms
13 vhsaccess1-pos7-0.bletchley.fixed.bt.net (62.6.197.134) 472.775 ms 413.810 ms 429.770 ms
14 213.120.207.218 (213.120.207.218) 288.801 ms 285.806 ms 376.831 ms
15 172.16.93.125 (172.16.93.125) 348.788 ms 383.831 ms 274.826 ms
16 172.16.93.49 (172.16.93.49) 284.805 ms 426.828 ms 869.717 ms
17 172.16.93.37 (172.16.93.37) 243.793 ms 386.818 ms 394.838 ms
18 172.16.93.1 (172.16.93.1) 399.757 ms 281.851 ms 324.813 ms
19 192.168.250.17 (192.168.250.17) 279.814 ms 315.717 ms 241.842 ms
20 213.123.76.29 (213.123.76.29) 241.812 ms 247.859 ms 193.838 ms
now i've seen people using 10.x.x.x addresses for the endpoints of the
occasional serial link, but this makes it look like most of british
telecom's backbone uses private addressing. i wonder what would
happen to them if someone were to leak a route into them for those
addresses?
--
|-----< "CODE WARRIOR" >-----|
codewarrior@daemon.org * "ah! i see you have the internet
twofsonet@graffiti.com (Andrew Brown) that goes *ping*!"
andrew@crossbar.com * "information is power -- share the wealth."
