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Firewall/Lan modem

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8 replies

by bfeltus

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I have a 3com 56k lan modem connected to a windows 2000 pro workstation. The lan modem is shared by other windows 2000 workstations on our windows 2000 network. I will be using zonealarm for the firewall. Will I need to put the fire wall on the other workstations that will be using the internet or only on the workstation connected to the lan modem?

8 replies

by thechas

Do the users have to go through the work station to access the modem?
Or can they access it directly from the LAN?

If any user can access the modem directly, then you need to install the firewall on all systems.

by some guy in seattle

If the other users are attaching to the internet through the w2k machine hosting the LAN modem (using ICS or something), then only the LAN modem machine needs zonealarm. If they can attach to the internet by themselves, then each machine would needit.

Sounds to me like the former, though.

by bfeltus

The other workstations are not connected directly to the lan modem. In their tcp/ip settings, the default gateway and the dns server is the lan modems address. I can click the browser from any workstation and the modem dials out.

by techkid

all machines that connect to the inet need zonealarm. That means the win2k pro machine with the lan modem connected directly, and the mahcines that dial the modem through the win2k machine. This is because the win2k machine is simply acting as a gateway and forwards inet traffic out the modem interface. The ports that are used are still on the local machines.

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