Re: Who is my router talking to?

Dave Hall wrote:
> On Tue, Jun 19, 2007 at 01:20:25PM -0600, Les Klassen Hamm wrote:
>> Am I missing something simple or obvious? Who is between the router and
>> Shaw? Should I be suspicious or what am I missing?
>
> My guess would be that some idiot has their own "firewall" applicance
> incorrectly connected (ie the cable modem is plugged in to a LAN port).
>
> If you can speak to someone knowledgeable at Shaw support who gives a crap,
> they might be interested in getting the problem fixed. It would likely
> affect everyone on your network segment. If you do some detective work,
> you could find the MAC address of the offending device which should give
> Shaw enough information to trace it to a particular cable modem which they
> could shut off until it's fixed.
>
> If you can do it, you should consider doing ingress filtering on the RFC1918
> networks so then you would just ignore this junk.

Thanks. After I restarted the modem and the router yesterday, I haven't
since seen that happen again, so I don't think I can do a lot more
snooping. I wish now I had thought quickly when I first saw it. But I'll
keep watching.
        Les...
Received on Tue Jun 19 13:43:37 2007