Configure the proxy server for the Asp.net Program

When our Intranet web server needs to access a Web Service on the Internet, but our network can only access the Internet through the proxy server. We need to tell the Asp.net ApplicationProgramProxy service address and port.
The implementation method is to add the following configuration items in the configuration section of Web. config.

Code
< System.net >  
< Defaultproxy >  
< Proxy Bypassonlocal = "True" Proxyaddress = "Http: // proxy server address: proxy server port"   />  
</ Defaultproxy >  
</ System.net >  

Several parameters are described as follows:
Bypassonlocal: whether to use the proxy server to access the local address. True: The local address does not use proxy to access the local address.
Proxyaddress: proxy server address, port, and other information