SSL
Some useful links to explain the concepts of SSL
Concepts
http://www.slashroot.in/understanding-working-secure-socket-layerssl
http://www.slashroot.in/understanding-ssl-handshake-protocol
FAQs on SSL
http://www.martfox.com/customer/knowledgebase/140/Why-a-SSL-Requires-Dedicated-IP.html
https://www.nutsandboltsmedia.com/does-your-website-really-need-ssl/
https://www.slashroot.in/how-does-ssltls-chain-certificates-and-its-validation-work
https://blog-cloudflare-com.cdn.ampproject.org/c/s/blog.cloudflare.com/rfc-8446-aka-tls-1-3/amp/
https://www.troyhunt.com/life-is-about-to-get-harder-for-websites-without-https/
https://www.troyhunt.com/on-the-perceived-value-ev-certs-cas-phishing-lets-encrypt/
https://www.troyhunt.com/extended-validation-certificates-are-dead/
Server Name Indication
Configuration
Basics of OpenSSL Commands for CSR, Keys & Certs
Wildcard SSL on sub-domain
Switching from HTTP to HTTPs
Creating SAN SSL certificate
Tuning & Hardening
http://www.troyhunt.com/2014/04/everything-you-need-to-know-about.html
https://www.yahoo.com/tech/heres-what-you-need-to-know-about-the-heartbleed-bug-82120054478.html
http://thehackernews.com/2014/04/heartbleed-bug-explained-10-most.html
http://www.jamescoyle.net/how-to/1073-bash-script-to-create-an-ssl-certificate-key-and-request-csr
https://rtcamp.com/wordpress-nginx/tutorials/ssl/multidomain-ssl-subject-alternative-names/
Hardening Your Web Server’s SSL Ciphers
Troubleshooting & Log Parsing
Commands
https://www.sslshopper.com/article-most-common-openssl-commands.html
http://www.shellhacks.com/en/HowTo-Check-SSL-Certificate-Expiration-Date-from-the-Linux-Shell