<189>262578: 10.3.179.254: Jul 26 16:47:17.877: %DMI-5-AUTH_PASSED: Switch 1 R0/0: dmiauthd: User 'sentinel' authenticated successfully from 10.0.1.170:49866  for netconf over ssh. External groups: PRIV15
This is a syslog message from a product called Cisco Network Operating System by Cisco. The following fields were extracted from the message:
fieldExtractorName: cisco_os
messageType: management_message
ruleCategory: dmi
ruleName: auth_passed
senderHost: 10.3.179.254
sensitivity: normal
severityCode: 5
severityLabel: notice
sourceInfo: unknown
streamName: cisco_os
tags: ['cisco_os', 'management_message']