The default MS SQL Server port is 1433. Some ISP's block access to port 1433.

We have enabled Port 14330 for our customers that have Port 1433 blocked by their ISP. We also have Port 1188 enabled for this as an additional alternate MS SQL Server Port.

If you can't use the default, to connect with the alternate port connect like this:

ServerName,14330 (ie, sql3.hostek.com,14330)
or
ServerIP,14330 (ie, 123.123.123.123,14330)