[ Robin Becker wrote: ]

Is there any way to distinguish between anonymous users from the same ip?

I'm planning on using zope to allow schoolkids to access a tax planning model. Most machines have their own ip, but some may allow multiple simultaneous access (eg Linux boxes).

I don't think that's a good way to differentiate between actual users. For instance, if two different users from our company were to participate, you would see the same IP address originate from both parties, by virtue of our firewall proxy. This may not apply in your case, where it appears everything functions over the local network, but it sets a bad precedent for building a user session model that you may wish to later extend.

An alternative might be to allow some kind of user login.

Much better, IMO. Best regards, Jeff Bauer Rubicon, Inc.