Introduction
Spam filtering
FortiGate-100A Administration Guide
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To prevent unintentionally blocking legitimate web pages, you can add URLs to an
exempt list that overrides the URL blocking and content blocking lists. The exempt list
also exempts web traffic this address from virus scanning.
Web content filtering also includes a script filter feature that can block unsecure web
content such as Java applets, cookies, and ActiveX.
Spam filtering
FortiGate spam filtering can scan all POP3, SMTP, and IMAP email content for spam.
You can configure spam filtering to filter mail according to IP address, email address,
mime headers, and content. Mail messages can be identified as spam or clear.
You can also add the names of known Real-time Blackhole List (RBL) and Open
Relay Database List (ORDBL) servers. These services contain lists of known spam
sources.
If an email message is found to be spam, the FortiGate adds an email tag to the
subject line of the email. The recipient can use the mail client software to filter
messages based on the email tag. Spam filtering can also be configured to delete
SMTP email messages identified as spam.
Firewall
The FortiGate ICSA-certified firewall protects your computer networks from Internet
threats. ICSA has granted FortiGate firewalls version 4.0 firewall certification,
providing assurance that FortiGate firewalls successfully screen and secure corporate
networks against a range of threats from public or other untrusted networks.
After basic installation of the FortiGate unit, the firewall allows users on the protected
network to access the Internet while blocking Internet access to internal networks. You
can configure the firewall to put controls on access to the Internet from the protected
networks and to allow controlled access to internal networks.
FortiGate policies include a range of options that:
• control all incoming and outgoing network traffic,
• control encrypted VPN traffic,
• apply antivirus protection and web content filtering,
• block or allow access for all policy options,
• control when individual policies are in effect,
• accept or deny traffic to and from individual addresses,
• control standard and user defined network services individually or in groups,
• require users to authenticate before gaining access,
• include traffic shaping to set access priorities and guarantee or limit bandwidth for
each policy,
• include logging to track connections for individual policies,
• include Network Address Translation (NAT) mode and Route mode policies,
• include mixed NAT and Route mode policies.
The FortiGate firewall can operate in NAT/Route mode or Transparent mode.
Summary of Contents for FortiGate FortiGate-100A
Page 24: ...24 01 28006 0068 20041105 Fortinet Inc FortiLog documentation Introduction...
Page 72: ...72 01 28006 0068 20041105 Fortinet Inc Transparent mode VLAN settings System network...
Page 80: ...80 01 28006 0068 20041105 Fortinet Inc DHCP IP MAC binding settings System DHCP...
Page 114: ...114 01 28006 0068 20041105 Fortinet Inc Access profile options System administration...
Page 232: ...232 01 28006 0068 20041105 Fortinet Inc CLI configuration Firewall...
Page 244: ...244 01 28006 0068 20041105 Fortinet Inc peergrp Users and authentication...
Page 320: ...320 01 28006 0068 20041105 Fortinet Inc service smtp Antivirus...
Page 366: ...366 01 28006 0068 20041105 Fortinet Inc syslogd setting Log Report...
Page 380: ...380 01 28006 0068 20041105 Fortinet Inc Glossary...
Page 388: ...388 01 28006 0068 20041105 Fortinet Inc Index...
