Server Name Indication (SNI) is a TLS mechanism that lets your client tell the server which domain it wants to connect to, so that the server can provide the correct security certificate to the client.
May 18, 2020 What is SNI or Server Name Indication – Explained with an SNI is an extension of the TLS handshake where the client hello uses the SNI field to specify the hostname to which it wants to connect. The server can then parse this request and send back the relevant certificate to complete the encrypted connection. Server Name Indication (SNI) is an extension to the Transport Layer Security (TLS) computer networking protocol by which a client indicates which hostname it is attempting to connect to at the start of the handshaking process. What Is SNI? How TLS Server Name Indication Works. SNI, or Server Name Indication, is an addition to the TLS encryption protocol that enables a client device to specify the domain name it is trying to reach in the first step of the TLS handshake, preventing common name mismatch errors.
Internet-Draft TLS Encrypted Client Hello June 2020 (CDN, application server, etc.) which can protect SNIs for all of the domains it hosts. As a result, SNI protection does not indicate that the client is attempting to reach a private origin, but only that it is going to a particular service provider, which the observer could already tell from the visible IP address.
Jan 11, 2018 TLS - Traefik
Nov 17, 2017
Let's Encrypt disables TLS-SNI-01 validation | ZDNet Jan 11, 2018 TLS - Traefik TLS¶. Transport Layer Security. Certificates Definition¶ Automated¶. See the Let's Encrypt page.. User defined¶. To add / remove TLS certificates, even when Traefik is already running, their definition can be added to the dynamic configuration, in the [[tls.certificates]] section: Let's Encrypt ACME TLS-SNI-01 end of life | DigitalOcean Jan 17, 2019 Record and Replay on servers with SNI Enabled