• Automatic: Specify only the proxy credentials (if needed). Using DHCP, your system obtains a URL to automatically
download a proxy auto-configuration (PAC) file.
• Semi-automatic: Specify the proxy credentials and URL for automatically downloading a PAC file.
• Manual: Specify the proxy address, port, and credentials. (This method lets you configure your system with only one
proxy.)
If your configuration includes automatically downloading a PAC file, there must be an expiration associated with the file so
the system knows when to download a new one. Make sure your PAC file server includes an Expires header in its HTTP
response (for example, Expires: Wed, 30 Oct 2016 09:30:00 GMT).
Your system can authenticate with a proxy using the following methods:
• Digest authentication (with either MD-5 or SHA-256 digest)
• NTLM authentication (only NTLMv2 is supported)
• Basic authentication (this insecure method is disabled by default)
• No authentication (or null authentication, meaning the proxy server doesn’t require credentials)
Your system supports the following services when configured to use a web proxy:
• Directory servers
• Provisioning service
• Calendaring service
• Software updates
Enable the System to Use a Web Proxy
By default, your G7500 and Studio X series system configuration doesn’t use web proxies.
Task
1 In the system web interface, go to Network > LAN Network > Web Proxy Settings.
2 Select Enable Web Proxy.
Set Up Automatic Web Proxy Configuration
With automatic web proxy configuration, your G7500 and Studio X series system obtains a URL for downloading a proxy
auto-configuration (PAC) file through DHCP option 252.
Task
1 In the system web interface, go to Network > LAN Network > Web Proxy Settings.
2 Select Automatic Configuration.
3 Select Enable WPAD.
This option enables the web proxy auto-discovery protocol (WPAD), which helps your system automatically download
the PAC file on your network using DHCP option 252.
4 Enter the Proxy User Name and Proxy Password.
5 Select Save.
Your system automatically downloads and reads the PAC file specifying the proxy rules. The system also automatically
downloads subsequent files before the current file expires.
Set Up Semi-Automatic Web Proxy Configuration
With semiautomatic web proxy configuration, you must specify the URL your G7500 and Studio X series system uses to
download a proxy auto-configuration (PAC) file.
Task
1 In the system web interface, go to Network > LAN Network > Web Proxy Settings.
2 Select Automatic Configuration.
3 If checked, clear the Enable WPAD check box.
4 Enter the Proxy User Name and Proxy Password.
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