Hi @mzharfan Is there a user only "trying" to log in or is one of these 3 messages a successful login event? The explanation for these fields you also find here: https://www.paloaltonetworks.com/documentation/80/pan-os/pan-os/user-id/configure-user-id-to-monitor-syslog-senders-for-user-mapping#_81430 So for this example I assume the first is a successful login event: Event string: 9.9.599.1.3.1.1.1.0 Username prefix: .9.9.599.1.3.1.1.27.0 = STRING: " Username delimiter: " Address prefix: IpAddress: Address delimiter: \s Or the whole thing with regex: Event regex: (9.9.599.1.3.1.1.1.0){1} Username regex: \.9\.9\.599\.1\.3\.1\.1\.27\.0\s=\sSTRING:\s"([a-zA-Z0-9\\\._]+) Address regex: IpAddress:\s([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})
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