Antivirus Tasks - Fortinet FortiGate Series Administration Manual

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Antivirus tasks

Figure 301: Order of operation

FTP, NNTP, SMTP,

POP3, or IMAP traffic

after web filter spam

The antivirus tasks work in sequence to efficiently scan incoming files and offer your

network unparalleled antivirus protection. The first four tasks have specific functions, the

fifth, the heuristics, is to cover any new, previously unknown, virus threats. To ensure that

your system is providing the most protection available, all virus definitions and signatures

are updated regularly through the FortiGuard antivirus services. The tasks will be

discussed in the order that they are applied followed by FortiGuard antivirus.

This task checks if files and email messages exceed configured thresholds. It is enabled

by setting the Oversized File/Email option under Firewall > Protection Profile > Antivirus to

For more information, see

File or message

file pattern

"Anti-Virus options" on page

FortiGate Version 4.0 MR1 Administration Guide

01-410-89802-20090903

http://docs.fortinet.com/