WAN optimization and web caching
Web caching
FortiGate Version 4.0 Administration Guide
01-400-89802-20090424
611
Web cache only topology
A web cache only WAN optimization topology includes one FortiGate unit that acts as a
proxy server and web cache server. Web page requests sent by users from the source
address in the web cache only rule are intercepted by the FortiGate unit. The FortiGate
unit requests web pages from the web servers, caches the web page contents, and
returns the web page contents to the users. When the FortiGate intercepts requests for
cached web pages the FortiGate unit which returns the cached pages and does not
contact the destination web server except to check for changes. You can configure web
cache settings to control how the web cache operates. See
.
Figure 405: Example web cache only topology
Configuring web cache only WAN optimization
You add WAN optimization rules that enable web caching only by going to
WAN Opt. & Cache > Rule
and selecting
Create New
to add a WAN optimization rule. To
add a rule that enables web caching only, set the Mode to Web Cache Only. If you select
Web Cache only, the WAN optimization rule does not perform byte caching or protocol
optimization.
For example, to configure web caching for users in a network with subnet address
172.20.120.0 connecting to web servers on a network with subnet address 192.168.10.0
you can add a web cache only WAN optimization rule with Source address 172.20.120.0,
Destination address 192.168.10.0, and Port 80 (see
). This rule caches web
pages requested by users on the 172.20.120.0 network who are using TCP port 80 to
request web pages on the 192.168.10.0 network.
Figure 406: Adding a web cache only WAN optimization rule
Web Server
Network
192.168.10.0
Client Network
172.20.120.0
WAN, LAN,
or Internet
WAN Optimization
Web Cache
Web Cache
11010010101
Note:
Since only one FortiGate unit is involved in the web cache configuring you do not
need to change the WAN optimization peer configuration for this scenario.
Summary of Contents for Gate 60D
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