When you establish connection to a database, the Port number will be set by default, based on your choice of JDBC Driver. You can change it if necessary per the following article:

http://help.metricinsights.com/m/Connecting_to_Data_Sources/l/104147-create-new-sql-data-source

Note about HTTP and HTTPS: HTTPS URLs begin with "https://" and use port 443 by default, whereas HTTP URLs begin with "http://" and use port 80 by default.

HTTP is not encrypted and is vulnerable to man-in-the-middle and eavesdropping attacks, which can let attackers gain access to website accounts and sensitive information, and modify webpages to inject malware or advertisements. HTTPS is designed to withstand such attacks and is considered secure against them (with the exception of older, deprecated versions of SSL).