D-Link DFL-CPG310 Product Manual - Page 279
Using VStream Antivirus, Overview
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Overview Chapter 10 Using VStream Antivirus 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 Point Stateful Inspection and Application Intelligence technologies, which performs virus scanning at the kernel level. VStream Antivirus scans files for malicious content on the fly, without downloading the files into intermediate storage. This means minimal added latency 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 performs 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 263