Using Vstream Antivirus; Overview - D-Link NetDefend DFL-CP310 User Manual

Chapter 10
This chapter explains how to use the VStream Antivirus engine to block security
threats before they reach your network.
This chapter includes the following topics:

Overview ..................................................................................................263

Enabling/Disabling VStream Antivirus....................................................265
Viewing VStream Signature Database Information .................................266
Configuring VStream Antivirus ...............................................................267
Updating VStream Antivirus ....................................................................279
Overview
The NetDefend firewall includes VStream Antivirus, an embedded stream-based
antivirus engine based on Check Poin
Int elligence technologies, which performs virus scanning
VStream Antivirus scans files for malicious content on the fly, without
downloading the files into intermediate storage. This means minimal added laten
and support for unlimited file sizes; and since VStream Antivirus stores only
minimal state information per connection; it can scan thousands of connections
concurrently. In order to scan archive files on the fly, VStream Antivirus perfo
real-time decompression and scanning of ZIP, TAR, and GZ archive files, with
support for nested archive files.
When VStream Antivirus detects malicious content, the action it takes depends on
the protocol in which the virus was found. See the table below. In each case,
VStream Antivirus blocks the file and writes a log to the Event Log.
Chapter 10: Using VStream Antivirus

Using VStream Antivirus

t Stateful Inspection and Application
at the kernel level.
Overview
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263