<164>Feb 01 2023 07:14:56: %ASA-4-106023: Deny tcp src outside:13.225.139.242/44858 dst dmz-1:165.236.132.176/10324 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: 10324
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: 44858
vendorcode: ASA-4-106023
action: block
protocol: 6
facilitycode: 20
streamName: cisco_asa
clientIP: 13.225.139.242
serverIP: 165.236.132.176