unwanted dial-out

Caspar von Seckendorff Alphatec_GbR at t-online.de
Fri Nov 28 15:18:49 GMT 1997


I am using a Linux Unix system as my gateway to the internet. When a user requests information from the internet it auomatically establishes an ISDN connection to the ISP. Now there some computers that should'nt be allowed to use the internet. So I installed a firewall with masquerading excluding these IP-numbers.
You cannot access the Interenet from these machines, but when there is a request from one of these computers my gateway still estalishes an ISDN connection.
Why is that?


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