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Restrict user to login from single Host

Restricting user to login from single host may be sometimes required from security point and other business requirements. We can achieve it through SERVER LEVEL LOGON TRIGGER.

ALTER TRIGGER TR_CHECK_LOGIN_TEST_HOST
ON ALL SERVER
FOR LOGON
AS
BEGIN

DECLARE @HOSTNAME VARCHAR(48)
DECLARE @PROGNAME VARCHAR(100)

SELECT @HOSTNAME = HOST_NAME FROM SYS.DM_EXEC_SESSIONS
WHERE SESSION_ID = @@SPID

IF ORIGINAL_LOGIN() = ‘TEST’ AND @HOSTNAME =’HostName’
ROLLBACK;

END

Once you create above trigger, Login “TEST” will be able to connect from specified host only. Connection from any other host will be failed and face below error: –

You can also find related errors in SQL Server Error log as well.

Error: 17892, Severity: 20, State: 1.

Logon failed for login ‘TEST’ due to trigger execution. [CLIENT: <local machine>]

Error: 3609, Severity: 16, State: 2.

The transaction ended in the trigger. The batch has been aborted.

 

Reference: Rohit Garg (http://mssqlfun.com/)

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Reference : Rohit Garg (http://mssqlfun.com/)

2013 with You & SQL Server

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Text information from RPC trace events not displayed in Profiler

In SQL Server 2005 and later, the information in the TextData column captured for the RPC:Starting and RPC:Completed events is also available in the BinaryData column. For performance reasons, it is more efficient to include the BinaryData column and omit the TextData column, when adding these events to the trace. If the BinaryData column is included, Profiler will extract the text from that column and display it in the lower event details pane, even if the TextData column was not included for the event.

However, a problem occurs when the trace does not contain ANY events with the TextData column. If such a trace is open in Profiler, the TextData column is not displayed in the grid, and the text information associated with the RPC:Starting and RPC:Completed events is not displayed in the lower event detail pane, even though the information is available in the BinaryData column.

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