Re: [gentoo-user] [OT] Interrogate network for devices

[Hal Martin]

Perhaps you need a cross over cable between the modem and the router?

-Hal


reader@×××××××.com wrote:
> Sorry for the OT, but unable to raise anyone at comcast right now.
>
> I think I recall having read somewhere that one can do something to
> discover what devices are on a network (Home lan). And what there
> addresses are.
>
> I've recently switched from DSL to Cable connection but still have
> both working currently.
>
> I had assumed my netgear-firewall/router would find the Cable modem and
> be able to talk to it, but that isn't happening.
>
> I can connect the cable modem direct to a pc and using the software
> that comes with it establish a connection to the internet, but I
> wanted to have that firewall/router in between the cable modem and home
> pcs.
>
> But that is only on a windows machine.
>
> The help file that comes with the modem provides no information about
> how one talks to the modem.  No ethernet address is supplied.  However
> it is an ethernet device and connects to the pc with ethernet cable.
>
> Apparently comcast felt it wiser to provide no details and let its
> software do the connecting.
>
> But can't I learn the IP address (inward facing) of the modem?  The IP
> from outside is of course visible to ipconfig, when connecting to
> internet from a windows machine thru the cable modem, but I see
> nothing that indicates what its lanside ethernet address is.
>
> Its obviously connecting to the pc with dhcp so setting the netgear to
> listen for dhcp seemed like it should work... but doesn't.
>
> I thought I would be able to connect to the cable modem with a browser
> and maybe learn enough to make the netgear router/firewall connect to
> it, or one of my gentoo boxes, so have tried a few of the
> semi-standard addresses  other ethernet hubs/routers etc default to, like
> 192.168.0.1, 192.168.1.1 and a few more.
>
>

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