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Home » SysAdmin » Testing and Check Verified Expiration SSL from terminal

Testing and Check Verified Expiration SSL from terminal

January 23, 2018 18 sec read

Hi Dude, this is simple way when i am use openssl, and want to check expiration SSL from terminal.

openssl x509 -enddate -noout -in /path-where-ssl-stored/fullchain.pem

When i am used “lets encrypt“, and want to check expired date :

[root@smtp ~]# cd /etc/letsencrypt/live/smtp.domainku.net/
[root@smtp smtp.domainku.net]# openssl x509 -enddate -noout -in fullchain.pem
notAfter=Apr 23 03:48:36 2018 GMT

And then, below is command to test smtp server in localhost is use ssl/tls or not.

openssl s_client -connect localhost:587 -starttls smtp

habibzain Follow Just husband, father and enthusiastic men about System Administration. Love to write short article about it. Perhaps can help and be useful for others.