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  1. What is SNI? How TLS server name indication works | Cloudflare

    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 …

  2. Server Name Indication - Wikipedia

    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 …

  3. What is Server Name Indication (SNI)? - GeeksforGeeks

    Jul 23, 2025 · The Server Name Indication (SNI) extension is a part of the TLS protocol that allows a client to specify the hostname of the server it is trying to connect to during the SSL/TLS handshake.

  4. What Is SNI (Server Name Indication)? - SSL Dragon

    Apr 3, 2025 · Server Name Indication (SNI) is an extension to the Transport Layer Security (TLS) protocol. It allows a client, such as a web browser, to specify the domain name it’s trying to reach …

  5. What is SNI (Server Name Indication)? - DigiCert

    Apr 4, 2025 · Server Name Indication (SNI) is an extension to the TLS protocol. It allows a client or browser to indicate which hostname it is trying to connect to at the start of the TLS handshake.

  6. The HTTPS-Only Standard - Server Name Indication

    Server Name Indication Server Name Indication, often abbreviated SNI, is an extension to TLS that allows multiple hostnames to be served over HTTPS from the same IP address.

  7. What Is SNI? How It Works and Why It Matters [Quick Tips]

    Server Name Indication is an extension of the Transport Layer Security (TLS) protocol. It allows a client (such as a web browser) to specify the hostname it wants to connect to during the initial handshake.

  8. What is Server Name Indication (SNI)? Everything You Need to Know

    Nov 3, 2023 · What is Server Name Indication? It is an extension integrated into TLS protocols, enabling clients such as web browsers to specify the hostname they intend to connect to as part of the TLS …

  9. What is Server Name Indication (SNI)? - Liquid Web

    What is Server Name Indication (SNI)? Before SNI, each SSL certificate required a dedicated IP. Now, Server Name Indication lets multiple secure websites share a single IP address. Server Name …

  10. What is a Server Name Indication (SNI)? How it Works on Single IP?

    Feb 21, 2025 · The Server Name Indication is an extension of the TLS (Transport Layer Security) protocol. It supports the browser or application to communicate with the hostname during the primary …