How to set up a Comcast cable modem?

I looked at the Linux cable modem howto, but it is just a collection
of notes for specific vendors that does not include Comcast. Where
can I find instructions for Comcast, or at least generic instructions?

Thanks,

irv

In article <bjinsq$8mu$(E-Mail Removed)>, Irving Kimura wrote:
> can I find instructions for Comcast, or at least generic instructions?

Set up your external interface to use DHCP. Your distro probably has a
tool to do this for you, but the command line using dhcpcd is this:
dhcpcd -d eth1 # change eth1 to your external interface
That's it! It's that simple.
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Irving Kimura <(E-Mail Removed)> writes:

> I looked at the Linux cable modem howto, but it is just a collection
> of notes for specific vendors that does not include Comcast. Where
> can I find instructions for Comcast, or at least generic
> instructions?

Here it is
1) Get some kind of ethernet card. 10baseT is enough as this what
cablemodems usually talk. And in any event it will be vastly
faster than the actual cable speeds (fast though it is compared to
dial-up).
2) Batten down your system
a) remove daemons and services that you do use/need
b) stateful packet firewall (using iptables) everything
3) Set up your machine to get IP via DHCP.
4) Get any security updates you need.
[optional] 5) Open hole in the firewall for any service you really
must provide.

Aternative:

Probably the easiest thing to do is buy a router/firewall box.
Linksys makes BFSR41 and Netgear, SMC &c also make similar devices.
They cost about $50-100 and provide typically 4 (depends upon model)
port switch for your local network. They will handle the DHCP stuff
with the cable modem and that side of the network. In addition, they
give some firewall protection. Just NAT alone is a poor man's
firewall and many boxen have firewalls in them.

With NAT/firewall/router box, you can just set some kind of static
unroutable address like 192.168.1.100.

Even if you have just one machine they can be worth it. Not only do
they provide room for expansion to more than one machine. The
firewall aspect can be critical in buffering your machine from the
latest internet exploit during the time it takes to get create your
own packet firewall and download security patches. This can be
especially important if you dual boot to a window OS. Some people
report being cracked during the time it takes to download the security
updates immediately after getting it onto the net.

--
Johan KULLSTAM <kullstj-(E-Mail Removed)> sysengr

On Mon, 8 Sep 2003 20:13:14 +0000 (UTC),
Irving Kimura in <bjinsq$8mu$(E-Mail Removed)> wrote:
>
>
>
> I looked at the Linux cable modem howto, but it is just a collection
> of notes for specific vendors that does not include Comcast. Where
> can I find instructions for Comcast, or at least generic instructions?
>
> Thanks,
>
> irv

For comcast all you need to do is set up DHCP.


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