I just use /sbin/ifup ppp0 or /sbin/ifup <name_of_dialup_connection).For dial-up networking I use kppp. I want to start it from the KDE-panel without having to type the root-password all the time. I use Redhat 8.0. I have examined 2 different solutions:
1) change PAM-authentication configuration file for kppp 2) create a group that is allowed to use kppp (e.g. 'dialout')...