Error Log. What this error Log means

Jan 18 08:16:36 liserver kernel: Firewall: *ICMP_IN Blocked* IN=eth0 OUT= MAC=e0:3f:49:e8:15:3d:00:1e:13:f9:af:00:08:00 SRC=139.99.1.148 DST=1.1.1.1 LEN=32 TOS=0x00 PREC=0x00 TTL=8 ID=1 DF PROTO=ICMP TYPE=8 CODE=0 ID=54625 SEQ=1