<4>Jun 19 20:06:20 hq-ie001 kernel: [258259.060031] [UFW BLOCK] IN=ens5 OUT= MAC=02:89:99:e9:b6:8c:02:63:2d:7a:e2:2d:08:00 SRC=18.51.107.23 DST=171.52.75.226 LEN=26899 TOS=0x00 PREC=0x00 TTL=64 ID=6695 DF PROTO=TCP SPT=9042 DPT=56396 WINDOW=4916 RES=0x00 ACK PSH URGP=0 
Product: Uncomplicated Firewall (UFW)
Vendor: linux