A Web proxy server intercepts HTTP requests and determines if it has stored copies of the
requested Web pages. If it does not, the proxy completes the request to the server on the Internet, returning the requested information to the user and also saving it locally for future requests. Setting up a Web proxy server on a network can be cumbersome, because each computer on the network must be configured to direct Web requests to the server.
If you have a proxy server on your network, instead of configuring each computer’s Web
browser to point to the proxy server, you can move the server to the WAN or DMZ and enable Web Proxy Forwarding using the settings on the Network > Web Proxy
page. The SonicWALL security appliance automatically forwards all Web proxy requests to the proxy server without requiring all the computers on the network to be configured.
To configure a Proxy Web sever, select the
Network > Web Proxy
page.
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Step 5
|
Select
Forward DMZ Client Requests to Proxy Server
if you have clients configured on the DMZ.
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Step 6
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Click
Accept
. Once the SonicWALL security appliance has been updated, a message confirming the update is displayed at the bottom of the browser window.
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If a Web proxy server is specified on the
Firewall > Web Proxy
page, selecting the Bypass
Proxy Servers Upon Proxy Server Failure
check box allows clients behind the SonicWALL security appliance to bypass the Web proxy server in the event it becomes unavailable. Instead, the client’s browser accesses the Internet directly as if a Web proxy server is not specified.