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Failed Logins Alert. RRS feed

  • Question

  • Hi All,

      I want to receive the email alert whenever there is failed login for 3 consecutive times.

    I have already configured email alert if there is login failure. But it send the alert for every single failed attempt. Need to know for specific condition for 3 or more attempts.

    What could be the options available ? what should be the approach 

     

    Monday, March 20, 2017 8:53 PM

Answers

  • Hi,

    You can't add a trigger to sys.fn_get_audit_file because it's not "real" table.

    • Marked as answer by Vinit S Thursday, March 23, 2017 8:49 PM
    Wednesday, March 22, 2017 8:40 AM

All replies

  • Hi

    What's your SQL release ?

    If you're on SQL 2008 or higher, you can setup an audit, capture the Failed Logins events and parse the resulting files for consecutive events from the same user

    Monday, March 20, 2017 9:00 PM
  • We are using SQL Server 2012.

    We have already setup the Audit. Not sure of the further thing. How to proceed beyond it ?

    "parse the resulting files for consecutive events from the same user" ?

    Monday, March 20, 2017 9:04 PM
  • Hi,

    OK, you need a job to dump the output of

    select * from master.sys.fn_get_audit_file()
    into a temporary table then locate for 3 consecutive occurrences of failed login events.

    Note : you need to pass 4 parameters : the audit file path, and 3 NULL values at the end

    Monday, March 20, 2017 9:32 PM
  • But job will be on scheduled basis. we want something real-time or dynamic. Third time login failed and we receive the mail.

    Thanks Sebastian for all your replies. Hope I will complete the client requirement.

    Tuesday, March 21, 2017 1:31 PM
  • creating trigger is on  sys.fn_get_audit_file. giving me an error.


    create trigger Login_Fail
    on sys.fn_get_audit_file ('S:\DeleteMe\Audit-20170313.sqlaudit',default,default)
    for insert    
    as
    begin 
    insert into Login_Fail
    select server_principal_name,count(server_principal_name),statement
    FROM sys.fn_get_audit_file ('S:\DeleteMe\Audit-20170313-125530_B19EDCB0-5D3A-4C8A-B0EB-579A346ED2EC_0_131341685146060000.sqlaudit',default,default)
    group by server_principal_name,statement
    having count(server_principal_name)  >= 1
    end

    Tuesday, March 21, 2017 1:58 PM
  • Hope this helps

    https://www.mssqltips.com/sqlservertip/2595/get-alerts-for-specific-sql-server-login-failed-events/

    Tuesday, March 21, 2017 4:30 PM
  • Hi,

    You can't add a trigger to sys.fn_get_audit_file because it's not "real" table.

    • Marked as answer by Vinit S Thursday, March 23, 2017 8:49 PM
    Wednesday, March 22, 2017 8:40 AM