You can use particular event code or event description in search string, whenever if any violation happens or particular string match in a log file you will get an alert
Example: if account is locked out we will get an alert immediately by creating the alert by using below query,
index=winsec EventCodeDescription="A user account was locked out" OR E ventCode = 4740|dedup user| stats count by user _time host
Example for Crontab schedule:
The cron parameters, * * * * *, correspond to minute hour day month day-of-week.
*/5 * * * * Every 5 minutes.
*/30 * * * * Every 30 minutes.
0 */12 * * * Every 12 hours, on the hour.
*/20 * * * 1-5 Every 20 minutes, Monday through Friday.
0 9 1-7 * 1 First Monday of each month, at 9am.
Let me know if this is work out.
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