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Protocol Tester

Reusable protocol connectivity tester (TCP/UDP + application-layer handshake checks).

protocol to test (see --protocols for the list)
also perform a ping check before the protocol test
show extended per-protocol information (headers, certificate details, full SMTP conversation, etc.)
override the default port for the selected protocol
timeout in seconds (default: 3)
username for login/AUTH (smtp/smtps/pop3/pop3s/imap/imaps only)
password for login/AUTH (smtp/smtps/pop3/pop3s/imap/imaps only)
one or more IP addresses / hostnames to test
Console idle
Output will appear here after you run the tool.