F-SECURE INTERNET GATEKEEPER FOR LINUX 4.01 Administrator's Manual page 10

Anti-Virus
• Uses the award-winning and proven F-Secure engine
• Can handle practically all existing viruses
• Can handle viruses for Windows, DOS, Microsoft Office, VBS, Linux, and other environments
• Combined use of multiple engines (FS-Engine (Hydra) and Aquarius) allows for a quick response
to new types of virus
• Low level of misdetection and false alarms
• Supports various file archive formats (ZIP, ARJ, LZH, CAB, RAR, TAR, GZIP, BZIP2 up to six
levels of nesting)
• Virus definition files can be updated automatically
Spam Blocking
• Supports spam detection for both SMTP and POP
• Uses a prioritized black list and white list to scan designated headers and the e-mail body to detect
spam by using customized conditions
• Uses the Spam detection engine
• Can use a RBL (Realtime Black List) to detect spam from the sender's e-mail address
• Can use a SURBL (SPAM URL Realtime Black List) to detect spam that contains spam domain
URLs in the e-mail body
• Adds a spam identification header ("X-Spam-Status: Yes") to spam e-mail to allow easy sorting
• Adds predefined text (such as "[[SPAM]]") to the e-mail subject to allow easy sorting
Other Features
• Can specify whether to block or allow files based on conditions such as the file extension,
User-Agent, and file size
• Can block ActiveX and script (JavaScript or VBScript) content
• Can generate access statistics in a Squid compatible log
• Can output to external logs such as syslog
• Includes an HTTPS (encrypted HTTP) proxy function. However, because communication is
encrypted, HTTPS (SSL) is not scannded for viruses.
• A virus identification header (X-Virus-Status: infected) can be added to virus detection notification
e-mails to allow easy sorting
F-Secure Internet Gatekeeper for Linux/Administrator's Guide
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