visnetic activeDefense: any comment or feedbacj about it?

hi there

i performed a search but didn't find topics about this product; have you heard of it? feedback?

thanks

tkk

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ref: http://www.deerfield.com/products/visnetic_activedefense/

read on deerfield site:
"VisNetic ActiveDefense is powerful Intrusion Detection for Internet servers, providing an additional layer of defense in an organization's security model. VisNetic ActiveDefense scans open ports to web or email servers for malicious activity, and automatically blocks these attacks.

VisNetic ActiveDefense also includes highly effective Anti-spam filtering for email servers, protection against popular web server viruses (such as NIMDA), SYN flood protection for all services, and automatic banning of intruders.

VisNetic ActiveDefense can be installed on Windows NT4, 2000, or XP based web servers (VisNetic WebSite, IIS, etc.) or email servers (VisNetic MailServer, Exchange, etc.). "