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How does SSL work Cloudflare?
The Flexible SSL option allows a secure HTTPS connection between your visitor and Cloudflare, but forces Cloudflare to connect to your origin web server over unencrypted HTTP. An SSL certificate is not required on your origin web server and your visitors will still see the site as being HTTPS enabled.
How does SSL and TLS work?
SSL/TLS uses both asymmetric and symmetric encryption to protect the confidentiality and integrity of data-in-transit. Asymmetric encryption is used to establish a secure session between a client and a server, and symmetric encryption is used to exchange data within the secured session.
What happens in a SSL / TLS handshake?
The two computers, the client and the server, then go through a process called an SSL/TLS handshake, which is a series of back-and-forth communications used to establish a secure connection. To take a deeper dive into encryption and the SSL/TLS handshake, read about what happens in a TLS handshake.
Is it safe to use flexible SSL on Cloudflare?
While not as secure as the other options, Flexible SSL does protect your visitors from a large class of threats including public WiFi snooping and ad injection over HTTP. Full SSL mode provides encryption from end users to Cloudflare and from Cloudflare to your origin server.
What does encrypted server name mean in Cloudflare?
Encrypted SNI replaces the plaintext “server_name” extension used in the ClientHello message during TLS negotiation with an “encrypted_server_name.” This capability expands on TLS 1.3, increasing the privacy of users by concealing the destination hostname from intermediaries between the visitor and website.
How does Cloudflare validate a device’s certificate?
When a client attempts to establish a connection with its origin server, Cloudflare validates the device’s certificate to check it has authorized access to the endpoint. If the device has a valid client certificate, like having the correct key to enter a building, the device is able to establish a secure connection.