Re: [PLUG] New Comcast wireless modem with old Buffalo wireless router

[Walt Mankowski <waltman@pobox.com>]

I hooked up the new modem this morning and I've got it mostly working,
but there's still one thing I can't figure out. I setup port
forwarding on the modem so that ports like ssh, imap and http forward
to DD-WRT, which in turn forwards to my linux box. This works fine
from the outside, and I can ssh from my linode into my home linux box
without a problem. But if I try to connect from inside it just
hangs. This is the case both over wifi (via my ipad) and wired (via my
laptop).

I'm at a loss for even how to debug this. Maybe the modem only
forwards external packets? How can I tell? The only way I can find to
configure it is via their web interface, and it's pretty minimal.

Anyone have any advice?

Walt

On Sun, Dec 17, 2017 at 07:36:46PM -0500, Walt Mankowski wrote:
> I've been a Comcast internet customer since 2012.  Recently they told
> me my old modem will longer be supported after January, and a few days
> ago they sent me a brand new XB3 modem.
> 
> Currently I've got my old modem plugged into a Buffalo WZR-600DHP
> AirStation running DD-WRT.  I've got a desktop and a laptop plugged
> into its RJ-45 ports, and it also handles a bunch of wireless devices.
> 
> I'm concerned because this new modem is also a wireless router.  If I
> just replace the old modem with the new one, will everything still
> work?  Or do I need to consolidate and move all my settings from the
> Buffalo router onto the Comcast device?  Has anyone tried this before?
> I'm also concerned that if I mess anything up, the old modem will have
> been deactivated and I won't easily be able to fall back once I start.
> 
> Thanks.
> 
> Walt



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Philadelphia Linux Users Group         --        http://www.phillylinux.org
Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
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