hping is a command-line oriented TCP/IP packet assembler/analyzer. The interface
is inspired to the ping(8) unix command, but hping isn't only able to send ICMP
echo requests. It supports TCP, UDP, ICMP and RAW-IP protocols, has a traceroute
mode, the ability to send files between a covered channel, and many other
features.
While hping was mainly used as a security tool in the past, it can be used in
many ways by people that don't care about security to test networks and hosts. A
subset of the stuff you can do using hping:
* Firewall testing
* Advanced port scanning
* Network testing, using different protocols, TOS, fragmentation
* Manual path MTU discovery
* Advanced traceroute, under all the supported protocols
* Remote OS fingerprinting
* Remote uptime guessing
* TCP/IP stacks auditing
* hping can also be useful to students that are learning TCP/IP.
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