Manual Registration Comcast High Speed Internet in Fedora 4
Neil Cherry
ncherry at comcast.net
Thu Jan 5 22:44:32 UTC 2006
Chasecreek Systemhouse wrote:
> On 1/5/06, Neil Cherry <ncherry at comcast.net> wrote:
>> Chasecreek Systemhouse wrote:
>>> On 1/4/06, Min Chen <mcfreemind at gmail.com> wrote:
>>>
>>>> Is this advice for using hub so that more than one computers can connect
>>>> to the internet via hub? I only had the cable connection setup for one
>>>> computer now.
>>> Yes. The cable modem is the dns and default path for the Internet.
>> ???
>>
>> A cable modem is a layer 2 device, it is not the DNS it simply
>> bridges the Ethernet to the cable modem termination system (CMTS).
>> Some cable modems have routers built in, these may have the ability
>> to act as DNS proxy.
>
>
> My DSL router acts as the default route AND dns server -- comcast
> can't do that?!?
Comcast's DNS is in the middle of their network. The default route
is usually the CMTS (it's the next hop). When Comcast puts in
a router then the user has a similar setup to yours but I think
that's a more expensive service. Most users drop a hardware NAT/
Firewall/Router in to do this. My setup is a bit more extreme, I
need a local DNS for my devices (I can't remember every IP address
and names are easier). I think most consumer DSL is PPPoE and
needs to have that router (I'm not 100% sure of that). The cable
setup doesn't need one (but many recommend the hardware NAT/
Firewall/Router anyway). I've heard of a few cable modems that are
built in a router but I've not seen them. That would also be like
your setup.
--
Linux Home Automation Neil Cherry ncherry at linuxha.com
http://www.linuxha.com/ Main site
http://linuxha.blogspot.com/ My HA Blog
http://home.comcast.net/~ncherry/ Backup site
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