<172>Apr 08 2023 22:31:36 10.52.255.1 : %PIX-4-106023: Deny tcp src inside:130.42.144.140/58351 dst outside:153.42.248.127/7680 by access-group "inside"

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: 7680
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: 58351
vendorcode: PIX-4-106023
action: block
protocol: 6
facilitycode: 21
streamName: cisco_pix
clientIP: 130.42.144.140
serverIP: 153.42.248.127