Best Open Source or Freeware Malware/Spyware/Antivirus with centralized management? [closed]

What are the best Malware/Spyware/Antivirus solutions?

Several requirements for the solution:

• Open Source or Freeware
• Centralized Management
• Reporting and Remote Installation

Think spybot / malwarebytes / highjackthis for business.

I am not interested in Symantec, Trend, McAfee, SonicWALL or any other commercial products.

AFAIK, there isn't a package than answers to all your requirements. Best Open Source AV package i know is ClamAV, and it doesn't have much, if any reporting and remote control/installation, and no centralized management. You can circumvent these problems by developing a scripted management and RIS environment. Shouldn't be too hard assuming you already have an infrastructure for some of it.

In general, (musing here) virus databases require constant updates, and it's a lot of boring hard work, I guess - not the ideal grazing field for bored open source developers. I wouldn't trust my corporate infrastructure to an anti virus that's updated by volunteer work, especially as the proprietary AV packages aren't THAT expensive, and the ClamAV antivirus really didn't score that high on any of the AV comparison tests.

Avira Free AV is great and lightweight.

www.avira.com