ICMP weirdness
Alon Tirosh
j0keralpha at gmail.com
Mon Oct 18 21:19:28 UTC 2004
Comcast uses parts of 10/8 for cable modem addressing, and these are
pingable from within the comcast network. Could this be some other
internal equipment address as well?
On Mon, 18 Oct 2004 17:01:39 -0400, Jim Popovitch <jimpop at yahoo.com> wrote:
>
> On Mon, 2004-10-18 at 15:54, Stephen J. Wilcox wrote:
> > why not that seems ok to me.. ?
> >
> > assuming you accept the 1918 assignment to your cable then its not unreasonable
> > that you can get to other end users on that network
>
> Across other non-private IP space? I am not all that familiar w/
> RFC1918, but I would think that this goes against it, or should I assume
> that Insight Broadband is part of Comcast?
>
> -Jim P.
>
> >
> > Steve
>
>
> >
> > On Mon, 18 Oct 2004, Jim Popovitch wrote:
> >
> > >
> > > >From Comcast Cable, at my home in Atlanta, I can ping 10.10.1.1....
> > > which is pong'ed from a private client network hanging somewhere off of
> > > Insight Broadband's network in the North Central part of the US. Why on
> > > god's green earth do network operators allow such nonsense as this?
> > >
> > > -Jim P.
> > >
> > > Traceroute -I 10.10.1.1 produces the following:
> > >
> > > traceroute to 10.10.1.1 (10.10.1.1), 30 hops max, 38 byte packets
> > > 1 10.238.10.1 (10.238.10.1) 29.089 ms 25.387 ms 28.574 ms
> > > 2 66.56.22.66 (66.56.22.66) 30.923 ms 31.305 ms 33.142 ms
> > > 3 66.56.22.70 (66.56.22.70) 35.945 ms 35.874 ms 36.832 ms
> > > 4 c-66-56-23-38.atl.client2.attbi.com (66.56.23.38) 34.740 ms 35.041
> > > ms 37.537 ms
> > > 5 12.118.184.41 (12.118.184.41) 41.967 ms 45.584 ms 43.997 ms
> > > 6 gbr2-p70.attga.ip.att.net (12.123.21.6) 44.988 ms 44.706 ms
> > > 43.033 ms
> > > 7 tbr2-p013602.attga.ip.att.net (12.122.12.37) 49.353 ms 44.010 ms
> > > 45.244 ms
> > > 8 12.122.10.138 (12.122.10.138) 62.244 ms 62.269 ms 62.148 ms
> > > 9 gbr1-p40.sl9mo.ip.att.net (12.122.11.114) 60.922 ms 67.005 ms
> > > 60.264 ms
> > > 10 gar1-p360.sl9mo.ip.att.net (12.123.24.209) 59.572 ms 64.013 ms
> > > 60.198 ms
> > > 11 12-220-0-69.client.insightBB.com (12.220.0.69) 77.000 ms 76.050
> > > ms 77.926 ms
> > > 12 12-220-7-198.client.insightBB.com (12.220.7.198) 95.437 ms 80.068
> > > ms 84.076 ms
> > > 13 10.10.1.1 (10.10.1.1) 93.612 ms 97.280 ms 192.994 ms
> > >
> > >
> > >
>
>
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