<4>Jun 30 17:29:05 hq-data007 kernel: [81852.930166] [UFW BLOCK] IN=ens5 OUT= MAC=02:15:09:5c:79:9f:02:1a:a4:b4:e1:82:08:00 SRC=230.204.253.114 DST=176.144.102.82 LEN=52 TOS=0x00 PREC=0x00 TTL=64 ID=55952 DF PROTO=TCP SPT=7001 DPT=42576 WINDOW=148 RES=0x00 ACK URGP=0 
This is a syslog message from a product called Uncomplicated Firewall (UFW) by linux. The following fields were extracted from the message:
action: block
clientbytes: 52
clientport: 42576
facilitylabel: kernel
localhostname: hq-data007
localstarttime: Jun 30 17:29:05
messagetype: firewall_action
priority: 4
program: kernel
protocol: 6
senderhost: 10.1.100.156
sensitivity: normal
serverport: 7001
severitycode: 4
severitylabel: warning
sourceinfo: unknown
tags: ['rfc3164', 'ufw', 'firewall_action']
streamName: ufw
clientIP: 176.144.102.82
serverIP: 230.204.253.114