[Samba] samba & gateway

[Marko Herold]

My samba-server (SUSE 8.0) is used also as an internet gateway via
a dsl-modem. The modem is connected with the second ethernet
interface of the server (auto dial-up).

The problem: Everytime when I mount a share or browse the network
the server is dialing up. When I disconnect the modem, it's also
possible to mount the shares but it takes a long time.

How can I find out why the server is establishing a connection to
the internet and how can I prevent the server from dialing up ?

Marko