<172>Mar 27 2023 15:31:13 10.52.255.1 : %PIX-4-106023: Deny tcp src inside:200.243.57.98/51307 dst outside:245.215.52.129/7680 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: 51307
vendorcode: PIX-4-106023
action: block
protocol: 6
facilitycode: 21
streamName: cisco_pix
clientIP: 200.243.57.98
serverIP: 245.215.52.129