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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 to point to the proxy server, you can move the server to the WAN and enable Automatic Proxy Forwarding (Web Only). The SonicWALL automatically forwards all Web proxy requests to the proxy server without requiring all the computers on the network to be configured.
Connect your Web proxy server to a hub, and connect the hub to the SonicWALL WAN port.
Alert!
The proxy server must be located on the WAN or the DMZ; it can not be located
on the LAN.
Enter the name or IP address of the proxy server in the Proxy Web Server field, and the proxy IP port in the Proxy Web Server Port field. Click Update.
If the Web proxy server is located on the WAN between the SonicWALL and the Internet router, add the Web proxy server address in the SonicWALL Intranet tab. Click the Intranet tab at the top of the window.
Selecting the Bypass Proxy Servers Upon Proxy Server Failure check box allows clients behind the SonicWALL 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.
Selecting Forward DMZ Client Requests to Proxy Server allows clients on the DMZ to be forwarded to a proxy server defined on the SonicWALL.
In the Intranet tab, enter the proxy server's IP address in the Add Range field.
Select Specified address ranges are attached to the WAN link and click Update. Once the SonicWALL has been updated, a message confirming the update is displayed at the bottom of the browser window.