First one must define public address. Meaning public IPs used belonging to the upstream ISP or the WISP owning their own block of public IPs. Owning your own block, you must ask... Is it worth the technical admin headache to manage them, and is the expertise there to do it. And is the benefit there, if the expertise was. The primary benefit for a small ISP is just to be portable between upstrewam providers, any time you want to be. Usually the answer is its not worth owning your own, unless you have scaled large enough to justify a /19 or higher. However, using an upstream's public IPs, costs nothing in most cases. And they do the painful management of it. Using private IPs, is also making it portable between providers, because its very quick and easy to create a new NAT rule to map the private addresses to any new Upstream's shared public IP. So the real question come up as... Is it a benefit to your subscribers to use public IPs, different than every other subscriber. Some VPN protocols require static IPs. Some corporate firewalling requires static IPs. Some VOIP services require public static IPs. Web servers and Mail servers require static IP. Access the subscriber from a remore PC for remote desoktop requires public static IP. Sharing IPs, will mean that if one customer gets blacklisted for sending SPAM, so will all your other subscribers.
It is definately possible to offer services using private IPs to the end users, many residential ISPs have chosen to do so. But doing so, does restrict the services that your subscribers will be able to do. But that may be a benefit. If you are selling $9.99 broadband, you won't want them to ahve the ability to host mail and web servers. IF you are competing against commodity monopolies, you may want the added features to distinguish your self. Step 1 is defining what services that you'd like your subscribers to be able to do. And then you make an IP allocation method that enables that. Tom DeReggi RapidDSL & Wireless, Inc IntAirNet- Fixed Wireless Broadband ----- Original Message ----- From: "Ugo Bellavance" <[EMAIL PROTECTED]> To: <wireless@wispa.org> Sent: Monday, January 28, 2008 4:37 PM Subject: Re: [WISPA] Private vs Public addresses for end-users > Tom DeReggi wrote: >> whether to give private or public address has nothing to do with cost. >> > > Oh, what are the thing to consider exactly? > > Regards, > > Ugo Bellavance > > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
