<174>Feb 12 2023 06:03:31: %ASA-6-106100: access-list signallb denied udp signallb/215.13.22.79(57367) -> inside/199.62.156.176(3544) hit-cnt 5 300-second interval [0xcd895a67, 0x0]

This is a syslog message from a product called ASA Firewall by Cisco. The following fields were extracted from the message:
priority: 174
senderhost: 10.52.255.10
serverport: 3544
severitylabel: informational
tags: ['cisco_asa_deny', 'deny', 'cisco_asa', 'firewall_action']
productids: [17, 0]
severitycode: 6
sourceinfo: unknown
sensitivity: normal
facilitylabel: local5
messagetype: firewall_action
clientport: 57367
vendorcode: ASA-6-106100
action: block
protocol: 17
facilitycode: 21
streamName: cisco_asa
clientIP: 215.13.22.79
serverIP: 199.62.156.176