Online Documentation for SQL Backup for SQL Server
Proxy server parameters
Choose one of three options:
Automatically detect proxy settings
I have direct connection to the Internet
Manual proxy configuration
If you have chosen to configure proxy manually then use this group of options to set the following proxy server parameters: host, port, user name and user password (if the Use authentication option is checked).
Click the Test connection button to check connection to the proxy server with the settings defined above.