restricting port access

From: Thomas.Voegeli@access.unizh.ch
Date: Wed May 12 2004 - 05:05:35 EDT


Dear managers,

we have a Alpha (Tru64, 5.1B) with 2 ethernet-interfaces.

One of the interfaces is connected to a common LAN
the other interface is connected to a private LAN.

The alpha is not used as a gateway/router.

How can I ensure that hosts on the common LAN can only access port 80 and
port 443?
Any host on the common LAN should not be allowed to access any other service
exept http and https.

I know a hardware firewall in between common LAN and alpha would be best,
but...

Thank your for any suggestions

Thomas



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