Secure remote shell

[Olivier Nicole]

Hi,

Part of (un)registerings users on my system consists in connecting to
various servers to add the user account to some services:

Registering users is done wia a web page, and the web server will
remote execute a script on the mail server to add the users in the
aliases and run newaliases, remote execute a script to the radius
server to add the user in the radius tables and restart radius, etc.

Of course all the remote execution should be done as root :(

So far, one specific user from the web server can rsh -l root to the
various other servers to do what needs to be done. But this is not
quite satisfactory.

What other solution would you suggest to execute a shell remotely as
root, that could be automated in a script (no password required).

Best regards,

Olivier