smith - a very quick and very dirty client/server tool for testing firewall.

smith – a very quick and very dirty client/server tool for testing firewall.

smith is a A client/server style agent meant for testing connectivity to and from a machine on a network, with Protocol support TCP/IP and UDP.
two function:
+ Initiate a port-specific ping against a listening agent
-+- Protocol to use to contact the remote agent. TCP and UDP use raw sockets which will bypass IPTABLES rules.
+ Server-side: listen for incoming ping requests from remote client.

smith – tool for testing firewall.

Usage:

Source: https://github.com/jidar