Справочник Пользователя для Fortinet IPS

Скачать
Страница из 62
FortiGate IPS User Guide Version 3.0 MR7
10
01-30007-0080-20080916
Network performance
IPS overview and general configuration
To create an IPS sensor, go to Intrusion Protection > IPS Sensor. See 
 for details. To access the protection profile IPS sensor 
selection, go to Firewall > Protection Profile, select Edit or Create New, and 
select IPS. 
To create a DoS Sensor, go to Intrusion Protection > DoS Sensor. See 
 for details.
When to use IPS
IPS is best for large networks or for networks protecting highly sensitive 
information. Using IPS effectively requires monitoring and analysis of the attack 
logs to determine the nature and threat level of an attack. An administrator can 
adjust the threshold levels to ensure a balance between performance and 
intrusion prevention. Small businesses and home offices without network 
administrators may be overrun with attack log messages and not have the 
networking background required to configure the thresholds and other IPS 
settings. In addition, the other protection features in the FortiGate unit, such as 
antivirus (including grayware), spam filters, and web filters offer excellent 
protection for all networks.
Network performance
The FortiGate IPS is extremely accurate and reliable as an in-line network device. 
Independent testing shows that the FortiGate IPS successfully detects and blocks 
attacks even under high traffic loads, while keeping latency within expected limits.
This section describes:
Default signature and anomaly settings
You can use IPS sensors to apply appropriate IPS signatures to different 
protection profiles, then different firewall policies.
Default fail open setting
If for any reason the IPS should cease to function, it will fail open by default. This 
means that crucial network traffic will not be blocked and the Firewall will continue 
to operate while the problem is resolved.
Change the default fail open setting using the CLI:
config ips global
set fail-open [enable | disable]
end