At 01:27 PM 2/27/02 +0000, [EMAIL PROTECTED] wrote:
>I have the opportunity to setup a firewall for a local 
>non-profit organization.  They want Internet access for 
>their office.  Both Cable and DSL are available in their 
>area.  Prices and speed seem comparable.  I have been 
>using Eiger and Dach 'steins for years with a cable 
>connection.  I have not used DLS or PPPoE.  Are there 
>any advantages/disadvantages with either option?  Thanks 
>for your opinions!  I am mostly concerned with ease of 
>administration.

Before you can recommend a solution to them, you need to find out more about
what they want. "They want Internet access for their office" has too many
meanings to serve as a guide.

The important question is whether they want to make services (like an onsite
Web server) available on the Internet. If they do, you want to recommend
that they get either (a) a service that offers static addresses -OR- (b) one
that offers dynamic addresses that don't change very often (making use of
dynamic-DNS service easier and more reliable). The first is better, but the
second will be cheaper, and since non-profits rarely have more monry than
they know what to do with, cost may be a big issue for them.

If you need to opt for (b) above, this *probably* means going with cable. My
experience is that cable/DHCP leases change relatively rarely, while
DSL/PPPoE leases change multiple times per day. But those observations are
generalizations, and you need to find out what is true in your area.

If they only need outgoing service, this consideration does not apply. LEAF
variants now support both DHCP addressing (used by cable-modem providers)
and PPPoE addressing (used by most DSL providers), but do allow for the fact
that PPPoE requires a bit higher level of hardware than true Ethernet-based
connections.

The last thing to think about is service quality, both the frequency of
interruptions and the actual speed delivered. Cable connections use shared
bandwidth (they are functionally like a hub-based LAN in this respect), so
the actual speed delivered can be much lower (or, occasionally, higher) than
the service's nominal speed. DSL is point to point, so the promised speed
will be the real speed ... between the client site and the ISP. But
bandwidth is shared *after* that point, and can be underprovisioned by a DSL
ISP as easily as by a cable ISP. There is no general answer to this one; you
need to ask around locally to find out what the specific providers you are
considering actually do.

Aside from that, the only advantage I can see to DSL is that you are likely
to have multiple DSL-based ISPs in your area, but only one cable-based ISP.
My observation is that this is an advantage of DSL only in theory, though,
as the low-price DSL provider always seems to be the telco.


--
------------------------------------"Never tell me the odds!"---
Ray Olszewski                                        -- Han Solo
Palo Alto, CA                                    [EMAIL PROTECTED]        
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