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Openssl s_client

posted 25 Jan 2018, 04:57 by Donald Ross
openssl s_client -connect 10.211.0.3:443 | openssl x509 -purpose

openssl s_client -connect 10.150.232.96:443 -showcerts

#show dates
openssl s_client -connect 10.240.89.254:3041 | openssl x509 -noout -dates
notBefore=Oct 10 20:04:26 2015 GMT
notAfter=Oct  9 20:04:26 2017 GMT

openssl s_client -connect 10.240.89.254:3041 | openssl x509 -noout -issuer

openssl s_client -connect 10.240.89.254:3041 | openssl x509

#nearly all details
openssl s_client -connect 10.240.89.254:3041 | openssl x509 -noout -text

https://www.shellhacks.com/openssl-check-ssl-certificate-expiration-date/
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