SSMS access deny for users other than 'sa' authentication.

--- SSMS access deny for users other than ‘sa’ authentication.
CREATE TRIGGER logon_trigger_not_from_SSMS
ON ALL SERVER FOR LOGON
AS
BEGIN
IF APP_NAME() LIKE '%Microsoft SQL Server%'
BEGIN
IF suser_name() IN ('Stormdev\Lowell','sa') --the only persons allowed to use SSMS, no sa allowed for testing
BEGIN
--only allowed from my host machine
IF host_name() !='STORMDEV'
BEGIN
RAISERROR('SSMS connections are restricted on to specific dba machines.', 16, 1)
ROLLBACK
END --host name check
END --suser_name check
ELSE
BEGIN
RAISERROR('SSMS connections are not permitted with this logon.', 16, 1)
ROLLBACK
END
END --app name check
ELSE
BEGIN
RAISERROR('SSMS connections are restricted on this server.', 16, 1)
ROLLBACK
END
END --trigger