<172>Feb 21 2023 00:17:41 10.52.255.1 : %PIX-4-106023: Deny tcp src outside:154.245.169.12/57149 dst hosts:167.58.224.251/3020 by access-group "outside"

This is a syslog message from a product called PIX Firewall by Cisco. The following fields were extracted from the message:
priority: 172
senderhost: 10.52.255.1
serverport: 3020
severitylabel: warning
tags: ['cisco_pix_deny', 'deny', 'cisco_pix', 'firewall_action']
productids: [0]
severitycode: 4
sourceinfo: unknown
sensitivity: normal
facilitylabel: local5
messagetype: firewall_action
clientport: 57149
vendorcode: PIX-4-106023
action: block
protocol: 6
facilitycode: 21
streamName: cisco_pix
clientIP: 154.245.169.12
serverIP: 167.58.224.251