# Mutual TLS (mTLS) in Apache APISIX ## General Description Mutual TLS (mTLS), also known as two-way TLS, establishes a secure communication channel between a client and a server. In the context of Apache APISIX, mTLS enables API Gateway to verify the identity of clients attempting to access APIs. This adds an additional layer of security by ensuring only authorized clients with valid certificates can connect. mTLS works by both the client and server presenting their TLS certificates to each other. The certificates are validated against a trusted Certificate Authority (CA) to ensure authenticity. If the validation is successful, a secure encrypted connection is established for communication. ## Benefits of using mTLS in APISIX: - **Enhanced Security:** mTLS prevents unauthorized access to APIs by verifying client identities. - **Improved Trust:** By establishing trust between clients and APISIX, it mitigates risks associated with man-in-the-middle attacks. - **Enforced Communication Encryption:** mTLS ensures all data exchanged between clients and APISIX is encrypted, protecting sensitive information. **For detailed instructions on configuring mTLS for client to APISIX, refer to the following resources:** - Configure mTLS for client to APISIX: Apache APISIX mTLS Client Configuration: https://apisix.apache.org/docs/apisix/tutorials/client-to-apisix-mtls/ - Mutual TLS Authentication: Apache APISIX mTLS documentation: https://apisix.apache.org/docs/apisix/next/mtls/