Netgear STM150 User Manual download pdf (Page 14)

ProSecure Web/Email Security Threat Management Appliance STM150 Reference Manual

1-2 Introduction

v1.1, March 2009

About Stream Scanning

Stream scanning is based on the simple observation that network traffic travels in streams. The

STM150 scan engine starts receiving and analyzing traffic as the stream enters the network. As

soon as a number of bytes are available, scanning commences. The scan engine continues to scan

more bytes as they become available, while at the same time another thread starts outputting the

bytes that have been scanned.

This multi threaded approach, in which the receiving, scanning, and outputting processes occur

concurrently, ensures that network performance remains unimpeded. The result is that the time to

scan a file is up to five times faster than traditional antivirus solutions – a performance advantage

that is easily noticeable to the end user.

Stream scanning also enables organizations to withstand massive spikes in traffic, as in the event

of a malware outbreak.

Key Features and Capabilities

The STM150 is a true appliance that provides comprehensive protection against malware and uses

real-time scanning technology to stop spyware, viruses, and other types of malware at the gateway,

without stopping the Internet. This section highlights the STM150’s primary features as a Web and

Email security solution:

• Real-time Protection – The patent-pending stream scanning technology enables scanning of

previously undefended real-time protocols, such as HTTP. Network activities susceptible to

latency (for example, Web browsing) are no longer brought to a standstill.

• Comprehensive Protection – Provides both Web and email security, covering six major

network protocols: HTTP, HTTPS, FTP, SMTP, POP3, and IMAP. The STM uses enterprise-

class scan engines employing both signature-based and heuristic detection to stop both known

and unknown threats. Malware database contains millions of signatures of spyware, viruses,

and other malware.

• Automatic Signature Updates – Malware signatures are automatically updated on an hourly

basis. Critical new signatures are typically deployed hours before they are available from other

security vendors.

• True Appliance – Deploys in-line in a matter of minutes, anywhere in the network. Runs

automatically and unobtrusively. Simply set and forget.

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Netgear STM150 User Manual Page 14