Fortinet 800/800F manual Web filtering

Page 35

 

 

 

Advanced configuration

Web filtering

Banned word lists are specific words that may be typically found in email. The FortiGate unit searches for words or patterns in email messages. If matches are found, values assigned to the words are totalled. If the defined threshold value is exceeded, the message is marked as spam. If no match is found, the email message is passed along to the next filter.

You configure banned words by going to Antispam > Banned Word.

While FortiGuard services maintain a large list of known spammers, it is not perfect. In some cases, some mail tagged as spam is an individual you want to receive mail from, while email that is not caught by the spam filters or users you don’t want to receive email from gets through to your inbox.

White lists and black lists enable you to maintain a list of email addresses that you want (white list) or don’t want (black list) to receive email from. You can add or remove addresses from lists as required. The FortiGate unit uses both an IP address list and an email address list to filter incoming email, if enabled in the protection profile.

When performing an IP address list check, the FortiGate unit compares the IP address of the message's sender to the IP address list in sequence. If a match is found, the action associated with the IP address is taken. If no match is found, the message is passed to the next enabled spam filter.

When performing an email list check, the FortiGate unit compares the email address of the message's sender to the email address list in sequence. If a match is found, the action associated with the email address is taken. If no match is found, the message is passed to the next enabled antispam filter.

To configure black/white lists, go to AntiSpam > Black/White List.

You enable antispam options for each mail service (POP3, IMAP and SMTP) in the protection profile. To configure antispam protection profile settings, go to Firewall > Protection Profile. Select edit for a profile and select the Spam Filtering options.

For details on the antispam features and settings, see the FortiGate Administration Guide or the FortiGate Online Help.

Web filtering

Web filtering is a method of controlling what web sites are viewable by users. There are three main sections to web filtering: the Web Filter Content Block, the URL Filter, and the FortiGuard Web filter. Each interact with each other in such a way as to provide maximum control and protection for the Internet users.

Web filtering options are enabled and configured in the protection profile settings by going to Firewall > Protection Profile. Select edit for a profile and selecting either the FortiGuard Web Filtering options or the Web Filtering options. You need to register your FortiGate unit and purchase FortiGuard services to use FortiGuard Web Filtering.

Content blocking enables you to specify file types and words that the FortiGate unit should block when encountered. With web content block enabled, every requested web page is checked against the content block list. The score value of each pattern appearing on the page is added, and if the total is greater than the threshold value set in the protection profile, the page is blocked.

FortiGate-800 and FortiGate-800F FortiOS 3.0 MR6 Install Guide

 

01-30006-0455-20080910

35

Image 35
Contents Install G U I D E Regulatory compliance TrademarksContents FortiGate Firmware Advanced configurationIndex Installing firmware from a system reboot using the CLITesting new firmware before installing Page Register your FortiGate unit IntroductionDocument conventions About the FortiGate-800/800FAbout this document Typographic conventions Further ReadingComments on Fortinet technical documentation Customer service and technical supportFortinet Knowledge Center Environmental specifications InstallingRack mount instructions GroundingMounting To install the FortiGate unit into a rackPlugging in the FortiGate Connecting to the networkTo power on the FortiGate unit To power off the FortiGate unitNAT mode NAT vs. Transparent modeTo connect to the web-based manager Connecting to the FortiGate unitTransparent mode Connecting to the web-based managerTo connect to the CLI Connecting to the CLITo configure interfaces Go to System Network Interface Configuring NAT modeUsing the web-based manager Configure the interfacesAdding a default route and gateway Configure a DNS serverAdding firewall policies To modify the default gateway Go to Router StaticTo set an interface to use Dhcp addressing Using the CLITo set an interface to use a static address To set an interface to use PPPoE addressing To configure DNS server settingsTo add an outgoing traffic firewall policy To modify the default gatewayTo switch to Transparent mode Go to System Status Configuring Transparent modeSwitching to Transparent mode Source Address All Destination Interface To switch to Transparent mode Backing up the configuration Verify the configurationSet the time and date Restoring a configurationAdditional configuration Set the Administrator passwordUpdating antivirus and IPS signatures Configure FortiGuardAdditional configuration Protection profiles Advanced configurationFirewall policies Firewall policiesAntivirus options Configuring firewall policiesAntiSpam options Web filtering Logging Downloading firmware FortiGate FirmwareReverting to a previous version Using the web-based managerUpgrading the firmware To revert to a previous firmware version Backup and Restore from a USB keyUsing the USB Auto-Install To upgrade the firmware using the CLI Using the CLITo revert to a previous firmware version using the CLI Execute restore image namestr tftpip4Execute restore image namestr tftpipv4 Installing firmware from a system reboot using the CLIPress any key to display configuration menu To install firmware from a system rebootTo backup configuration using the CLI Restoring the previous configurationTo configure the USB Auto-Install using the CLI Additional CLI Commands for a USB keyTo restore configuration using the CLI To test the new firmware image Testing new firmware before installingTesting new firmware before installing Testing new firmware before installing Index Web filtering 35 web-based manager Page Page

800/800F specifications

Fortinet has established itself as a leader in cybersecurity solutions, and the FortiGate 800/800F series is a testament to this reputation. These next-generation firewalls are designed to deliver high-performance security for enterprise-level networks, providing a robust defense against a multitude of cyber threats.

One of the standout features of the FortiGate 800/800F is its advanced security processing unit (SPU) architecture, which ensures unparalleled threat detection and prevention capabilities. The inclusion of purpose-built chips allows for deep packet inspection at high speeds without hindering network performance. This architecture enables organizations to maintain high throughput while applying comprehensive security policies.

The FortiGate 800/800F series supports a wide array of security features, including intrusion prevention system (IPS), web filtering, and antivirus capabilities. These functionalities work together to monitor and protect against a range of cyber threats, from malware to sophisticated DDoS attacks. Additionally, the firewalls are equipped with FortiSandbox integration, providing automated malware analysis and ensuring that zero-day threats are effectively identified and neutralized in real-time.

In terms of networking capabilities, the FortiGate firewalls support advanced routing protocols, enabling seamless integration into existing network infrastructures. The series also includes support for VPN functionalities, which are crucial for secure remote access. With features like SSL inspection and secure SD-WAN, businesses can leverage flexible connectivity options while ensuring that sensitive data remains protected.

The FortiOS operating system enhances the FortiGate 800/800F series with centralized management capabilities, allowing administrators to configure and monitor security policies with ease. The intuitive user interface simplifies complex tasks, aiding in the rapid deployment and scalability of security measures across large networks.

High availability and redundancy features are also integral to the FortiGate 800/800F design. The series supports active-active and active-passive configurations, ensuring continuous protection and minimizing downtime during maintenance or unexpected failures.

In summary, the FortiGate 800/800F series stands out for its powerful performance, advanced security features, and robust networking capabilities. Organizations seeking to bolster their cybersecurity posture will find these firewalls to be invaluable tools in safeguarding their digital environments and ensuring business continuity in an increasingly complex threat landscape.