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SBS 2003 - What Firewall to use to protect server after uninstalling ISA

I have sbs 2003 premium technologies. My server has two NICs and I used ISA as a firewall to connect to the internet. Now, I have moved to SonicWALL UTM device. I have disabled second NIC and uninstalled ISA. I have run CEICW Wizard too. It says it can not configure the firewall that comes with SBS as there is no second NIC and I have to configure external firewall. Fine, my sonicwall tz210 is online.

Now, there is no firewall running on the server. What should I do to protect it from attacks from the inside of the LAN? Is it not possible to turn on windows firewall? Is it safe not to have any firewall at all on the server?

Thanks,
Lakshmi Anand K

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Glen Knight

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smtwkla

ASKER

Thanks demazter,

Is this configuration secure and best practice? Is it usual to run 2003 servers with no firewall, to protect it from the inside?

Thanks again.

Glen Knight

You can use the Windows Firewall (Just checked my lab machine)

Goto Control Palen > Windows Firewall

smtwkla

ASKER

Turning it on just shuts off the machine from the rest of the network. Any pointers to guides on how to configure windows firewall properly on a sbs 2003 server?

Glen Knight

Under the exceptions tab ensure file and print sharing is checked.

Glen Knight

There is also a guide here on how to configure the built in fireall: http://technet.microsoft.com/en-us/library/cc672064(WS.10).aspx

smtwkla

ASKER

thanks for the info demazter,

the guide says "In this topology, you cannot use the firewall on the server because that computer is not the gateway between the Internet and the client computers. If you want to use that firewall, you must install a second network adapter in the server and use the topology described in the previous section."

does this mean the guide says to leave the server with no firewall?

File and print sharing is turned on in the exceptions section but still, am unable to access the server properly.

Glen Knight

It certainly does look that way.

I have never enabled the Windows Firewall on an SBS Server and have never experienced any problems :)

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Cliff Galiher

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smtwkla

ASKER

Thanks guys, I will find and install a 3rd party firewall!