Fortinet FortiGate Series Administration Guide

Changing web cache settings WAN optimization and web caching
FortiGate Version 4.0 MR1 Administration Guide
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Changing web cache settings
In most cases the default settings for the WAN optimization web cache are acceptable.
However, you may want to change them to improve performance or optimize the cache for
your configuration. To change these settings, go to WAN Opt. & Cache > Cache.
Figure 431: Web Cache Settings
Period Select a time frame to show bandwidth optimization. You can select:
• Last 10 Minutes
• Last 1 Hour
•Last 1 Day
• Last 1 Week
• Last 1 Month
Protocol Select All to display bandwidth optimization for all applications. Select an
individual protocol to display bandwidth optimization for that individual
protocol.
Chart Type Select to display bandwidth optimization with a line chart or a column chart.
Note: For more information about many of these web cache settings, see RFC 2616.
Always revalidate Select to always revalidate requested cached object with content on the
server before serving it to the client.
Max Cache Object
Size
Set the maximum object size to cache. The default size is 512000 KB. This
object size determines the maximum object size to store in the web cache.
Objects retrieved that are larger than the maximum size are still delivered to
the client but are not stored in the web cache.
Negative Response
Duration
Set how long in minutes to cache negative responses. The default is 0,
meaning negative responses are not cached. The content server might send
a client error code (4xx HTTP response) or a server error code (5xx HTTP
response) as a response to some requests. If the web cache is configured to
cache these negative responses, it returns that response in subsequent
requests for that page or image for the specified number of minutes.

Fortinet FortiGate Series Specifications

General

Model	FortiGate Series
Category	Firewall
Throughput	Varies by model
Interfaces	Varies by model
Concurrent Sessions	Varies by model
VPN Support	Yes
High Availability	Yes
Firewall Throughput	Varies by model
VPN Throughput	Varies by model
IPS Throughput	Varies by model
NGFW Throughput	Varies by model
Threat Protection Throughput	Varies by model
New Sessions per Second	Varies by model
Power Supply	Varies by model
Security Features	Firewall, IPS, Application Control, Web Filtering, Antivirus, VPN
Virtual Domains	Yes
Form Factor	Desktop, Rackmount