一、只允许指定IP访问数据库
创建测试账号
CREATE LOGIN testuser WITH PASSWORD = '123'
GO
CREATE TRIGGER [tr_connection_limit]
ON ALL SERVER WITH EXECUTE AS 'sa'
FOR LOGON
AS
BEGIN
--限制test这个帐号的连接
IF ORIGINAL_LOGIN()= 'test'
--允许test在本机和下面的IP登录
AND
(SELECT EVENTDATA().value('(/EVENT_INSTANCE/ClientHost)[1]', 'NVARCHAR(15)'))
NOT IN('<local machine>','192.168.50.145','192.168.8.138')
ROLLBACK;
END;
===========================================================================================
登录信息查询
SELECT
a.[session_id],a.[login_time],a.[host_name],
a.[original_login_name],b.[client_net_address]
FROM MASTER.sys.dm_exec_sessions a
INNER JOIN MASTER.sys.dm_exec_connections b
ON a.session_id=b.session_id
===========================================================================================
二、限制角色只能运行指定IP访问
--创建测试数据库
USE MASTER
GO
CREATE DATABASE Logon_DB
--创建IP过滤表
USE Logon_DB
GO
CREATE TABLE dbo.ValidIP (
IP NVARCHAR(15),
CONSTRAINT PK_ValidIP PRIMARY KEY CLUSTERED(IP)
);
--插入过滤IP
USE Logon_DB
GO
INSERT INTO dbo.ValidIP(IP) VALUES('<local machine>');
INSERT INTO dbo.ValidIP(IP) VALUES('192.168.8.138');
INSERT INTO dbo.ValidIP(IP) VALUES('192.168.8.16');
--创建登录触发器
CREATE TRIGGER [tr_logon_CheckIP]
ON ALL SERVER
FOR LOGON
AS
BEGIN
IF IS_SRVROLEMEMBER('sysadmin') = 1
BEGIN
DECLARE @IP NVARCHAR(15);
SET @IP = (SELECT EVENTDATA().value('(/EVENT_INSTANCE/ClientHost)[1]', 'NVARCHAR(15)'));
IF NOT EXISTS(SELECT IP FROM [Logon_DB].[dbo].[ValidIP] WHERE IP = @IP)
ROLLBACK;
END;
END;
这次我们在IP为：192.168.50.145的机器上进行测试，这个IP之前是允许使用rone4acc帐号登陆的（tr_connection_limit），这次使用sa这个帐号登陆，返回了Figure3的错误信息，这是因为它违反了登陆触发器tr_logon_CheckIP的规则。在192.168.8.16通过sa登录成功，说明限制生效了
三、登陆名与有效IP对应表
USE Logon_DB
GO
CREATE TABLE [dbo].[ValidLogOn](
[Id] INT IDENTITY(1,1) NOT NULL,
[LoginName] [sysname] NOT NULL,
[ValidIP] [nvarchar](15) NOT NULL,
CONSTRAINT [PK_ValidLogOn] PRIMARY KEY CLUSTERED ([Id])
)
--创建唯一约束索引
CREATE UNIQUE NONCLUSTERED INDEX [IX_ValidLogOn_LV] ON [dbo].[ValidLogOn]
(
[LoginName] ASC,
[ValidIP] ASC
)
--插入测试数据
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'mssql2\administrator', N'<local machine>')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'<local machine>')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'127.0.0.1')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'localhost')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'192.168.50.145')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'rone4acc', N'<local machine>')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'rone4acc', N'192.168.8.16')
--创建登录触发器
CREATE TRIGGER [tr_logon_CheckLogOn]
ON ALL SERVER WITH EXECUTE AS 'sa'
FOR LOGON
AS
BEGIN
DECLARE @LoginName sysname
DECLARE @IP NVARCHAR(15)
SET @LoginName = ORIGINAL_LOGIN();
SET @IP = (SELECT EVENTDATA().value('(/EVENT_INSTANCE/ClientHost)[1]', 'NVARCHAR(15)'));
--判断登录名和IP
IF NOT EXISTS(SELECT [ValidIP] FROM [Logon_DB].[dbo].[ValidLogOn] WHERE [LoginName] = @LoginName AND [ValidIP] = @IP)
ROLLBACK;
END;
用户登陆名与IP对应关系表[ValidLogOn]，有几点需要注意的，mssql2\administrator这个是Windows 身份验证中操作系统的帐号，你需要根据你的实际情况进行修改；IP当中你则需要注意<local machine>和127.0.0.1这些特殊的地址，我个人还是建议在这个表中加入这些信息的。
实用举例：
只允许指定IP访问
创建测试账号
CREATE LOGIN test WITH PASSWORD = '123'
GO
--创建测试数据库
USE MASTER
GO
CREATE DATABASE Logon_DB
USE Logon_DB
GO
CREATE TABLE [dbo].[ValidLogOn](
[Id] INT IDENTITY(1,1) NOT NULL,
[LoginName] [sysname] NOT NULL,
[ValidIP] [nvarchar](15) NOT NULL,
CONSTRAINT [PK_ValidLogOn] PRIMARY KEY CLUSTERED ([Id])
)
--创建唯一约束索引
CREATE UNIQUE NONCLUSTERED INDEX [IX_ValidLogOn_LV] ON [dbo].[ValidLogOn]
(
[LoginName] ASC,
[ValidIP] ASC
)
--插入测试数据
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'mssql2\administrator', N'<local machine>')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'<local machine>')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'127.0.0.1')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'localhost')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'192.168.50.145')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'192.168.8.11')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'test', N'<local machine>')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'test', N'192.168.8.16')
--创建登录触发器
CREATE TRIGGER [tr_logon_CheckLogOn]
ON ALL SERVER WITH EXECUTE AS 'sa'
FOR LOGON
AS
BEGIN
DECLARE @LoginName sysname
DECLARE @IP NVARCHAR(15)
SET @LoginName = ORIGINAL_LOGIN();
SET @IP = (SELECT EVENTDATA().value('(/EVENT_INSTANCE/ClientHost)[1]', 'NVARCHAR(15)'));
--判断登录名和IP
IF NOT EXISTS(SELECT [ValidIP] FROM [Logon_DB].[dbo].[ValidLogOn] WHERE [LoginName] = @LoginName AND [ValidIP] = @IP)
ROLLBACK;
END;
远端云服务器的配置：
列出数据库孤立用户
exec sp_change_users_login 'report'
将用户关联起来
exec sp_change_users_login 'UPDATE_ONE','read','read'
只允许指定IP访问
--创建测试数据库
USE MASTER
GO
CREATE DATABASE Logon_DB
USE Logon_DB
GO
CREATE TABLE [dbo].[ValidLogOn](
[Id] INT IDENTITY(1,1) NOT NULL,
[LoginName] [sysname] NOT NULL,
[ValidIP] [nvarchar](15) NOT NULL,
CONSTRAINT [PK_ValidLogOn] PRIMARY KEY CLUSTERED ([Id])
)
--创建唯一约束索引
CREATE UNIQUE NONCLUSTERED INDEX [IX_ValidLogOn_LV] ON [dbo].[ValidLogOn]
(
[LoginName] ASC,
[ValidIP] ASC
)
--插入测试数据
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'mssql\administrator', N'<local machine>')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'<local machine>')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'127.0.0.1')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'localhost')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'sa', N'192.168.1.4')
INSERT [dbo].[ValidLogOn] ([LoginName], [ValidIP]) VALUES (N'read', N'2.2.2.2')
--创建登录触发器
CREATE TRIGGER [tr_logon_CheckLogOn]
ON ALL SERVER WITH EXECUTE AS 'sa'
FOR LOGON
AS
BEGIN
DECLARE @LoginName sysname
DECLARE @IP NVARCHAR(15)
SET @LoginName = ORIGINAL_LOGIN();
SET @IP = (SELECT EVENTDATA().value('(/EVENT_INSTANCE/ClientHost)[1]', 'NVARCHAR(15)'));
--判断登录名和IP
IF NOT EXISTS(SELECT [ValidIP] FROM [Logon_DB].[dbo].[ValidLogOn] WHERE [LoginName] = @LoginName AND [ValidIP] = @IP)
ROLLBACK;
END;