Network_netProxyView
When users access the web through a proxy server that is located on the internal network (between the user and the UTM appliance), the HTTP/HTTPS connections seen by the appliance originate from the proxy server, not from the user.
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 SuperMassive automatically forwards all Web proxy requests to the proxy server without requiring all the computers on the network to be configured.
The following graphic shows the Network > Web Proxy page.
Configuring Automatic Proxy Forwarding (Web Only)
To configure Automatic Proxy Forwarding (Web Only):
1. Connect the Web proxy server to a hub, and connect the hub to the SuperMassive WAN or DMZ port.
Note The proxy server must be located on the WAN or DMZ; it can not be located on the LAN.
2. Go to Network > Web Proxy.
3. Under Automatic Proxy Forwarding (Web Only), type the name or IP address of the proxy server in the Proxy Web Server (name or IP address) field.
4. Type the proxy IP port in the Proxy Web Server Port field.
5. To bypass the proxy servers if a failure occurs, select the Bypass Proxy Servers Upon Proxy Server Failure check box.
Note The Bypass Proxy Servers Upon Proxy Server Failure check box allows clients behind the SonicWALL SuperMassive 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.
6. Select Forward DMZ Client Requests to Proxy Server if you have clients configured on the DMZ.
7. Click Accept.
Once the SonicWALL SuperMassive has been updated, a message confirming the update is displayed at the bottom of the browser window.
Configuring User Proxy Servers
Users can configure a list of up to 32 user proxy servers by entering the host name or IP address.
To configure a user proxy sever:
1. Connect the user proxy server to a hub, and connect the hub to the SonicWALL SuperMassive WAN or DMZ port.
Note The proxy server must be located on the WAN or DMZ; it can not be located on the LAN.
2. Go to Network > Web Proxy.
3. Under User Proxy Servers, click the Add button.
4. Type the name or IP address of the proxy server.
5. Click OK.
6. Repeat steps 3 and 4 to add more proxy servers.
Editing User Proxy Servers
To edit the name or IP address of a proxy server:
1. In the proxy server list box, select the proxy server you want to edit.
2. Click the Edit button.
3. Type the name or IP address of the proxy server.
4. Click OK.
Removing User Proxy Servers
To remove a proxy server:
1. In the proxy server list box, select the proxy server you want to remove.
2. Click the Remove button.