Re: [vox-tech] networking
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Re: [vox-tech] networking
Up spake Jim on Mon, Jan 20, 2003 at 11:19:40AM -0800:
> Thanx Mr. Salzman for helping me with my posting woes.
*having difficulty thinking of Peter as "Mr. Salzman"*
> I am very new to computers let alone the linux operating
>system. I am very interested in buying some new hardware,
>suse linux professional 8.1 software, and some other
>things to make a local area network in my house for my
>family and me.
I feel like saying, as a preface to all of this, that you
have some learning ahead of you. Don't panic--there's
tons of online help out there, and we're certainly here to
help--the absolute LAST thing I want to do is put you off
this project, but I want to be clear about the scope of
your undertaking. You're making a transition from "new to
computers" to, frankly, expert-level competence. You'll
do it, we want you to do it, but it will not be a weekend
or even a two-weekend project.
For hardware, you'll need, in addition to everyone's desktop
systems, 1) a computer to be your firewall, and 2) a separate
computer to be your router. These can be old machines. In
fact, it's a great use for old machines.
> I am going to get cable broadband very soon and want to
>have linux as my server. My family uses another OS besides
>linux. Can I still run these non linux systems off of my
>future linux server via LAN?
Yes. The language that computers speak to each other (TCP/IP)
is the same for all systems.
> Does linux have easily
>configurable firewalls? Can I easily adjust settings so
>my teenage daughter can't log on the internet at 2:30 in
(Let me commend you on your easy acceptance of good security
procedures. Your implicit assumption that a firewall is
essential is absolutely correct.)
Depends on what you mean by "easily configurable". Linux
makes very *powerful* firewalls, by which I mean that you
can do pretty much anything you want. Alas, as is
common in life, the tradeoff is frequently ease of use.
Many people use a special Linux distro called "LEAF",
which is designed to be a firewall. Other people will
roll their own, often using an application called iptables.
The daughter thing sounds fairly straightforward to me (not
that I've tested this, you understand); selectively block
access to device eth0 (Linux's internal name for the ethernet
port) based on user name and time of day.
>Do I have to worry about what modem I can or can not use?
Yes, unfortunately. You want to avoid the whole class of what
are called "Winmodems". These are very inexpensive l'il
modems that farm out all their computations to the main CPU.
The manufacturers don't tell us how they work, so it's tough
to get them to work.
As a rule of thumb, external modems are usually OK while
internal modems are usually not OK.
But you won't need modems for what you're describing; modems
are used to dial other modems (e.g. for dial-up Internet
access). After you get high-speed access, you'll have a
"Say you decide to call it quits after the first exam. <draws stick
figure atop a building on the board> Down here <draws more stick
figures> are all your friends, laughing and mocking you as you fall.
That's the important part. All mocking you as you fall."--former math
professor, lecturing on air resistance
Visit www.nicolopolis.com ... digital nonsense for a weary world.
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