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November 2014
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How to check SSL validity period

Most of the time once you completed the new SSL installation, you may needed to verify whether the install was success or not even though webserver does not shows any error after the service restart.

I installed many SSL and most of the time clients want to verify the install twice by me or we need to provide some option to verify it by them.

So I decide to include certain command output excerpt on the email which I’m going to reply to the client.

Verify the SSL validity

[root@rc-040 ~]# echo | openssl s_client -connect google.com:443 2>/dev/null | openssl x509 -noout -dates
notBefore=Nov 13 04:32:09 2014 GMT
notAfter=Nov 15 05:37:02 2015 GMT
[root@rc-040 ~]#

Or you can use some online tool to verify the ssl like https://www.sslshopper.com/ssl-checker.html#hostname=gmail.com

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