TLS (Transport Layer Security) is the general name of a standardized encryption protocol for inter-network communications. Transfer Protocol, on the other hand, is a special name that Elasticsearch uses for data transfer.
On the Elasticsearch side, the TLS structure is used to ensure data transfer between clusters (nodes) in an encrypted manner and to prevent nodes that do not provide the relevant encryption certificate from connecting to the existing cluster structure unannounced. Along with this, we will also activate the xpack.security module.
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