North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: Large ISPs doing NAT?
> -----Original Message----- > From: Tony Rall [mailto:[email protected]] > Sent: 30. apr�la 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.
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