How Antivirus works?

What is the best antivirus software?
What is the type of Antivirus Software do you use?

What is the best antivirus software?

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Firewall denying all connections from/to a server/PC)))

Clam is best for preventing the common viruses and with a firewall and ids you will get best protection if you know how to configure them

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Thanks for your comment I really appreciate it.

I guess you'd find more useful information on specialized web-sites:

http://anti-virus-software-review.toptenreviews.com/
http://www.pcmag.com/article2/0,2817,2372364,00.asp
http://www.pcantivirusreviews.com/

the links are from Google top results found with request "What is the best antivirus software?"

As for what antivirus we use... Directadmin officially supports only ClamAV.

Anti-virus works on the basis of specific algorithms.For example "propagation model algorithm". This algorithm is used to track virus according to the propagation across the system as the name suggests.

The best anti-virus available free is Avast according to me.Because it will use less memory and thus its very fast.

The best paid anti-virus I think is Kaspersky. Because its updates regularly.