TLS termination in Azure Application Gateway refers to the process of decrypting TLS-encrypted traffic at the gateway before forwarding it to the backend servers. This means that the Application Gateway handles the SSL/TLS handshake with the client, decrypts the incoming traffic, and then sends the unencrypted data to the backend servers.
"End-to-end TLS termination" in Application Gateway extends this process throughout the entire communication path. It involves decrypting TLS at the gateway and re-encrypting it before sending it to the backend servers. This ensures that communication between the client and the gateway and between the gateway and the backend servers is both encrypted. It provides security for the entire journey of the data, from the client to the backend servers, maintaining confidentiality and integrity throughout.
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