[pptp-server] Newbee Question...

James Cameron cameron at fax.sno.cpqcorp.net
Tue Mar 19 16:52:31 CST 2002

Spuky wrote:
> James wrote:
> > Use a central server to maintain the list of IP addresses as they
> > change.
> is there any software available to do this?

Yes, I've seen such software to record the new IP for a dynamic IP user,
but I have no specific recommendations.  Dynamic DNS servers with a web
page script front end seem to be popular.

If a DNS server isn't used, all that is needed is a script that collects
the latest known IP address for a client.  This could be via HTTP and a
scripting language, or something else.

An alternative and secure means of collecting the IPs; grant a special
purpose account on the server to each user, and require them to provide
their ssh host key to you, then insert it into the .ssh/authorized_keys
file along with a command that saves the value of environment variable
$SSH_CLIENT ... but this might require a lot of research and effort on
your part.

I know of no software that will automate the whole thing for you.
But that just means I haven't found it yet.

James Cameron                                 (james.cameron at compaq.com)

OpenVMS, Linux, Firewalls, Software Engineering, CGI, HTTP, X, C, FORTH,
COBOL, BASIC, DCL, csh, bash, ksh, sh, Electronics, Microcontrollers,
Disability Engineering, Netrek, Bicycles, Pedant, Farming, Home Control,
Remote Area Power, Greek Scholar, Tenor Vocalist, Church Sound, Husband.

"Specialisation is for insects." -- Robert Heinlein.

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