If a tester is attempting to ping a target that exists but receives no response or a response that states the destination is unreachable, ICMP may be disabled and the network may be using TCP. Which o

Traceroute maps the hop-by-hop path to a destination using ICMP or UDP by default and is a route-tracing utility, not a tool designed to probe direct host availability over TCP.

Hping is a command-line network tool designed to craft and send custom TCP/IP packets, including TCP SYN packets directed at specific ports, effectively functioning as a TCP-based ping. Unlike standard ping which depends solely on ICMP, hping can elicit responses from a host over TCP even when ICMP is filtered or disabled, making it the standard tool for this purpose in penetration testing.

TCP ping describes a technique or concept rather than a named, standalone security testing tool available as a distinct option in this context - hping is the actual tool that implements TCP-based host probing.

Broadcast ping sends ICMP echo requests to a subnet broadcast address to discover live hosts, but it still relies on ICMP, which is stated to be disabled in this scenario.