Firewall on SBS 2003 single-homed

SBS 2003 machine has only one NIC. Its Windows firewall cannot protect the LAN, by design.
So now it's off (by SBS install).

My question is,
can Windows firewall, if started, protect the SBS host machine itself?  (the host only, not the entire LAN)

If so, is it safe to start it directly (Configure Firewall under Internet and E-mail), of should I run again the internet wizard.
campinamAsked:
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Cliff GaliherCommented:
Unfortunately no. The windows firewall in the 2003 era had some odd dependencies and won't properly start on SBS without breaking other features. You have to go 3rd-party or a 2-NIC configuration (which I do not recommend for other reasons.)
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campinamAuthor Commented:
I wanted to install a tool that blocks IPs of fraudulent logon attempts. However, it makes use of the firewall... There seems to be no way to do it?
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Cliff GaliherCommented:
Not on SBS 2003.
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