couple of questions regarding 'lifeline' and large scale nat...
joe at nethead.com
Fri Feb 10 19:36:44 CST 2012
On Fri, Feb 10, 2012 at 1:19 PM, Eric J Esslinger <eesslinger at fpu-tn.com>wrote:
> We're toying with the idea of a low bitrate 'lifeline' internet on our
> cable system, maybe even bundled with a certain level of cable service.
> First question, if you happen to be doing something like this, what bit
> rates are you providing.
Well, a lifeline telephone is effectively 64kb/s, up and down. Makes me
remember when I had my first ISDN line and was happy to get beyond dial-up
> Second question, though 'real' internet customers all get real IP's, what
> would you think of doing something like this with 'large scale' nat
> instead. Understand, we're only talking about basic internet, something
> like a 256k/96k (or similar) connect, not something that would be used by a
> serious user. (One thing we are looking at is some older dial up users we
> still have, most of which could go onto cable just fine but don't want to
> pay the price).
Force SMTP to something sane, block all the 139, etc. MS ports. Basic web,
telnet, and ssh. Set it up like a coffee house. Use a proxy and make them
register. It's not like they are chatting 911, ya know. If they have NAT
issues, then they need a real account. If they can get to google,
wikimedia, or what ever a high school student needs to research papers,
then they have what they need for a life-line. Let chat protocols through,
that's low bandwidth. I'm guessing that this is done as a favor to the
customer that won't/can't pay for a real account. But let them know it's
not a real account. This is just to give them a taste of real IP and not a
solution to all their problems. Shove them a NATted DHCP address and if
they can't figure that out then refer them to the local wizkid or a better
plan with support. Let them know up front that this is a basic service and
don't expect phone support. If you're a cable company then they can call
and say the cable is out.
Joe Hamelin, W7COM, Tulalip, WA, 360-474-7474
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