<132>Feb 12 2023 13:00:30 10.11.200.67 : %ASA-4-106100: access-list CSM_FW_ACL_ denied tcp Outside/71.90.84.226(14015) -> PUB_DMZ/138.21.207.208(22) hit-cnt 1 first hit [0x6921d058, 0x00000000]

This is a syslog message from a product called ASA Firewall by Cisco. The following fields were extracted from the message:
priority: 132
senderhost: 10.11.200.67
serverport: 22
severitylabel: warning
tags: ['cisco_asa_deny', 'deny', 'cisco_asa', 'firewall_action']
productids: [17, 0]
severitycode: 4
sourceinfo: unknown
sensitivity: normal
facilitylabel: local0
messagetype: firewall_action
clientport: 14015
vendorcode: ASA-4-106100
action: block
protocol: 6
facilitycode: 16
streamName: cisco_asa
clientIP: 71.90.84.226
serverIP: 138.21.207.208