<164>Jul 23 2022 09:03:31: %ASA-4-106023: Deny tcp src outside:34.249.2.233/25317 dst dmz-1:187.185.74.216/44818 by access-group "outside_access_in" [0x0, 0x0]

This is a syslog message from a product called ASA Firewall by Cisco. The following fields were extracted from the message:
priority: 164
senderhost: 10.0.0.1
serverport: 25317
severitylabel: warning
tags: ['cisco_asa_deny', 'deny', 'cisco_asa', 'firewall_action']
productids: [17, 0]
severitycode: 4
sourceinfo: unknown
sensitivity: normal
facilitylabel: local4
messagetype: firewall_action
clientport: 44818
vendorcode: ASA-4-106023
action: block
protocol: 6
facilitycode: 20
streamName: cisco_asa
clientIP: 187.185.74.216
serverIP: 34.249.2.233