internet control message protocol

fping is one my favorite network profiling / scripting tool. It uses the Internet Control Message Protocol (ICMP) echo request to determine if a target host is responding or not. Unlike ping , fping is meant to be used in scripts, so its output is designed to be easy to parse. You can easily write […]


The Internet Control Message Protocol (ICMP) has many messages that are identified by a “type” field. You need to use 0 and 8 ICMP code types. => Zero (0) is for echo-reply => Eight (8) is for echo-request. To enable ICMP ping incoming client request use following iptables rule (you need to add following rules […]