F-Secure Internet Gatekeeper for Linux/Administrator’s Guide
10
Anti-Virus
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Uses the award-winning and proven F-Secure engine
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Can handle practically all existing viruses
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Can handle viruses for Windows, DOS, Microsoft Office, VBS, Linux, and other environments
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Combined use of multiple engines (FS-Engine (Hydra) and Aquarius) allows for a quick response
to new types of virus
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Low level of misdetection and false alarms
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Supports various file archive formats (ZIP, ARJ, LZH, CAB, RAR, TAR, GZIP, BZIP2 up to six
levels of nesting)
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Virus definition files can be updated automatically
Spam Blocking
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Supports spam detection for both SMTP and POP
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Uses a prioritized black list and white list to scan designated headers and the e-mail body to detect
spam by using customized conditions
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Uses the Spam detection engine
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Can use a RBL (Realtime Black List) to detect spam from the sender’s e-mail address
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Can use a SURBL (SPAM URL Realtime Black List) to detect spam that contains spam domain
URLs in the e-mail body
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Adds a spam identification header (“X-Spam-Status: Yes”) to spam e-mail to allow easy sorting
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Adds predefined text (such as "[[SPAM]]") to the e-mail subject to allow easy sorting
Other Features
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Can specify whether to block or allow files based on conditions such as the file extension,
User-Agent, and file size
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Can block ActiveX and script (JavaScript or VBScript) content
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Can generate access statistics in a Squid compatible log
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Can output to external logs such as syslog
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Includes an HTTPS (encrypted HTTP) proxy function. However, because communication is
encrypted, HTTPS (SSL) is not scannded for viruses.
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A virus identification header (X-Virus-Status: infected) can be added to virus detection notification
e-mails to allow easy sorting