There are very little virus that have targeted Linux based operating systems in the past. There for the requirement of a Virus Guard isn't felt badly. But there are Open Source virus guards that are available for download. CLAMTK is one such virus guard and is available for download from http://clamtk.sourceforge.net. I have heard that there is no necessarily to have a virus guard if you are on Linux.There for just enjoy your time with Linux. You are much safe with Open Source than with Bill.
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