Cable Modem Setup

[Tony Hammitt]

1: You don't have to run a proxy server, but if you want to run Junkbuster
or Squid (or both), they'll help speed things up by either blocking ads,
or remembering content locally.  I can help offline with junkbuster
proxy-ing.  I've never used Squid...

2: 'dhcpcd eth1'  Much easier than setting up windoze...

3. Gateway will be defined through eth1 for the firewall unless you want
to have a gateway into the internal network, but having everything on the
same subnet is usually much easier.  I use 10.1.X.X/16 (don't want to run
out =-)

You may want to set up some kind of caching DNS on the firewall, too.
Cable modem companies tend to use flaky OS's like windoze which crap
out once or twice a day.  Keeping your personal DNS preferences locally
can save a lot of headaches.

Hope you have fun with your new setup.

Regards,

Tony Hammitt

tony at hammitt.com

Gene and Amy Dascher wrote:
> 
> I am getting ready to have Comcast come out and install a cable modem at
> my house. I have a p5-133 set up as my firewall/router.  I am running
> RedHat 6.1 with ipchains for the basic firewall & IP masquerading.  Here
> are a couple of questions I have about that whole process (and yes, I
> have read most of the HOW-TOs out there):
> 
> 1.  Do I Have to run a proxy server like squid to be able to access the
> Internet from my Windows machines on the same network?  From what I can
> make of the ipchains stuff, I don't need to, but I could be overlooking
> something.
> 
> 2.  From what I understand, all I have to do is set my default gateway
> on my main user box (not the firewall) to the IP address of the firewall
> (eth0 that points to the internal network), and the nameserver addresses
> to the ones given to me by Comcast, and everything should work.  What I
> can't see is where I tell ipchains to use eth1 (that is connected to the
> cable modem) as the internet connection.
> 
> 3.  What do I set as the gateway for eth0 on the firewall machine(or do
> I need to set it to anything?)
> 
> Thanks,
> 
> Gene Dascher