Telnet is more often available in older/properly configured windows systems. Curl is nix and doesn’t have the history of availability of telnet. Good to know bo

Telnet is more often available in older/properly configured windows systems. Curl is nix and doesn’t have the history of availability of telnet. Good to know both. Wonder whether ssh -verbose could work in a pinch? Haven’t tried it for non-ssh coms. The whole point of course is not every protocol nor service provides a minimalistic/widespread way of testing for basic connectivity.