> -----Original Message-----
> From: Tony Rall [mailto:[EMAIL PROTECTED]]
> Sent: 30. apríla 2002 19:59
> To: [EMAIL PROTECTED]
> Subject: Re: Large ISPs doing NAT?
>
>
>
>
> On Monday, 2002-04-29 at 08:43 MST, Beckmeyer
> <[EMAIL PROTECTED]> wrote:
> > Is anybody here doing NAT for their customers?
>
> I hope not.
>
> If you're NATing your customers you're no longer an ISP.
> You're a sort-of-tcp-service-provider (maybe a little udp
> too). NAT (PAT even more
> so) breaks so many things that it would be unconscionable to
> advertise as an ISP. Even some tcp apps fail under NAT. The
> NAT box may include a number of "fix-ups" but such will never
> be equivalent to giving the customer a public address.
well.. yes and no.
depends on definition and how you set the services. i don't know how you treat this in
u.s. but in europe gprs is mostly considered being a value-added service to gsm
instead of a real internet connectivity replacement.
if you think of gprs a bit it will never have enough capabilities to serve as a
full-time inet service. it's a great solution for accessing your data remotely but
it's very limited in means of capacity
and then you have those 'pdp-contexts' or how they call it. it's just another acronym
for a vpn... if a corporate user requires full ip connectivity then why not give him a
vpn uplink directly to their hq and the users can safely use private addresses
according to corporate policy. in this way gprs is very similar to mpls. i have worked
on gprs-mpls vpn integration and it works just fine.
> An Internet Service Provider gives the customer a full
> connection to the Internet. All IP protocols should work.
you also may give the [common] user an opportunity to have 'limited' service set (so
you can use private addresses + nat/pat) for lower price or pay a bit more for 'full'
service. i think the 'limited' in real life can safely cover requirements of 95% of
the customers. do you think they will download mp3's and avi's via gprs? how? :)) from
my point of view if you cover http, e-mail and various similar services you will
provide most user with more than they ever would expect, wouldn't you?
> I'm in favor of using NAT only where there is a good argument
> for it and the customers are given the straight story about
> what they're buying and what it won't be able to do. Don't
> call yourself an ISP.
...
> Tony Rall
>
>
deejay
--
Tomas Daniska
systems engineer
Tronet Computer Networks
Plynarenska 5, 829 75 Bratislava, Slovakia
tel: +421 2 58224111, fax: +421 2 58224199
A transistor protected by a fast-acting fuse will protect the fuse by blowing first.