My Win2008 R2 server is protected only by Windows Defender. I REALLY doubt its capability. So, what option else do I have?
PS. Win2008 R2 has only 64bit version.
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There are plenty of paid products but if you are looking for free look in to FortiClient. There are a few others out there but this will get you started. http://www.fortinet.com/products/endpoint/