Secure Socket Layer

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Transport Layer Security (TLS), preceded by SSL, are cryptographic protocols, that provide communication security.

Web Sockets

Sockets are endpoints of two way communication. Unix domain sockets use TCP or UDP. SSL (secure socket layer) is the standard security protocol.

Let's Encrypt

Certbot is an automatic client that fetches and deploys SSL/TLS certs for webservers. Client for Let's Encrypt

chmod a+x certbot-auto
# kill server
./certbot-auto certonly