Let's Encrypt

wikipedia:Let's Encrypt project was started in 2012 and provides X.509 certificates for Transport Layer Security (TLS) encryption at no charge. Internet Security Research Group, the Californian public-benefit corporation behind Let's Encrypt, was incorporated in May 2013.

Let's Encrypt do not support certificates for IP address. https://github.com/certbot/certbot/issues/1985#issuecomment-166733399

Logs: /var/log/letsencrypt/letsencrypt.log

Configuration:

• /etc/letsencrypt/renewal

Activities

1. Learn about the official certbot, and how to create and renew certificates

Related commands

• openssl

See also

• HTTP, HTTP client, HTTP/1.1, HTTP/2, HTTP/3, HTTPS, HSTS CSR, TLS, SSL, openSSL, WebSockets, WebRTC, ssl_certificate QUIC, HPKP, CT, List of HTTP status codes, URL redirection, Content-type:, Webhook, HTTP headers, --insecure, Axios HTTP client, HTTP cookies, HTTP ETag
• Certbot, Let's Encrypt: certbot (command), plugins, OCSP, certbot certificates, certbot renew (examples), /var/log/letsencrypt/letsencrypt.log, Certificate Checker, Certbot changelog, certbot --help, /etc/letsencrypt/
• CA, FreeIPA, PKI, OpenCA, Wildcard certificate, certtool, certbot (Let's Encrypt), certinfo (Cloudflare), ACME, Boulder, cfssl (Cloudflare), Public key certificate, public key, TLS and X.509, OCSP, Subject Alternative Name (SAN), openssl ca, Self signed certificate, CSR, keytool, ACM, KMS, aws acm, IdenTrust, multirootca, cert-manager