Hi, I've the problem that I need some rules for a temporary ppp0 interface. This interface is only active then the admin has made a dial-up on the server and has activated a ppp-daemon. In the time the ppp0-Interface is up the connections should be able completely in both directions and through to clients. But this should only alowed for connections via ppp0. Connections via the normal isdn0 should be protected by the normal firewallroules (iptables). How have I to configure. Regards, Ruprecht ------------------------------------------------------------------------------------------ Ruprecht Helms IT-Service & Softwareentwicklung Tel./Fax +49[0]7621 16 99 16 Web: htp://www.rheyn.de