无法远程访问sql server（错误消息：远程系统拒绝了网络连接）

Question

I tried using windows authentication but the server I'm using is also an active directory server so I'm using sql authentication instead.

public const string con = "Data source=192.168.56.101,1433" + ";" +"Database=" +
    database + ";" + "User ID=" + user + ";" + "password=" + password;

this is the connection string

Also I carefully configured and reconfigured Sqlserver to allow remote connections and completely turned the firewall off

Answer 1

Make sure that TCP/IP is enabled in SQL Server. You can find that setting in the Sql Server Configuration Manager, under the Sql Server Network Configuration. Once it's enabled, under the properties of the TCP/IP configuration, in the IP Addresses tab, make sure your IP is active and note the port (1433 is the default).

Open the TCP port (1433 is the default) in the firewall. Also make sure that your connection string follows a connection string that is understood by the provider. For SQL Server one can be:

Server=myServerAddress;Database=myDataBase;User Id=myUsername; Password=myPassword;

refer to connectionstrings.com for more details

Answer 2

我解决了这个问题，因为我怀疑端口1433并非TCP连接的默认端口，因为服务器位于虚拟机上，解决方案是将SQL Server管理TCP协议的配置重置为使用动态端口并侦听所有，