The company database is on Tencent Cloud, first the company vpn, after entering the server address, port number, login account password, the test is successful.
server address: port number
server address, port number
(From: http://www.360doc.com/content/12/0427/10/551980_206869507.shtml )
Use such an address: domain name orIP\instance name, port number (such as mydsn.com\sqlexpress,12345)
Key points: Define the port number, set the gateway channel, use a comma instead of a colon for the link word