My problem: when I turn on the firewall of my server, the domain clients cant log-in anymore. Already logged in users can still access their shares, but if someone tries to log in, the PDC isn't reachable. I opened the Ports: 137-139&445 with no success. My system has the following configuration: Suse 8.2 Linux Samba 2.2.8 A single Network adapter (the server isn't the gateway) Regards Stefan Parzer