Testowanie połączenia SSL

Fajne tool z biblioteki openssl: s_client – narzędzie do diagnozowania połączenia SSL.
Przykładowo aby sprawdzić połączenie z google.com:

/usr/bin/openssl s_client -connect google.com:443

Z manuala openssl:

s_client This implements a generic SSL/TLS client which can establish a transparent connection to a remote server speaking SSL/TLS. It’s intended for testing purposes only and provides only rudimentary interface functionality but internally uses mostly all functionality of the OpenSSL ssl library.

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