+EMQX supports [X.509 certificate authentication](./x509.md) for client authentication. Using X.509 certificate authentication in EMQX, clients and servers can establish trusted connections through TLS/SSL, ensuring the authenticity of communication parties and the integrity of the data transmitted. EMQX allows for both one-way and two-way authentication: one-way authentication, where only the server is authenticated by the client, and two-way authentication, where both client and server mutually verify each other's certificates. This flexibility caters to various levels of security requirements and deployment scenarios.
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