OpenSSL - useful commands

openssl  Configure link libraries Configure the shared libraries for OpenSSL The new OpenSSL binary will load library files from the 'usrlocalssllib' directory  If your OS is not listed below, you can follow the official installation guide to install OpenSSL Amazon Linux 2 sudo yum install openssl11 Ubuntu

openssl s_client -connect com:465 openssl s_client -starttls smtp -crlf -connect :587 หากท่านมีการเปิดใช้งาน mail sni สามารถสั่งตรวจสอบได้ OpenSSL ¶ · Introduction · InstallingConfiguring · Requirements · Predefined Constants · Purpose checking flags · KeyCertificate parameters · Certificate

What OpenSSL is used for? Most web servers across the internet and intranets alike use SSL certificates to secure connections These OpenSSL · 1 Copy your certificate to the system certificate directory At a terminal prompt, type: · 2 Edit the ca-certificates configuration