# Communication Security

For communication security between servers and clients, and between servers and other servers, you must explicitly configure SSL within EMS .

SSL communication requires software to implement SSL on both server and client. The EMS server includes the OpenSSL implementation. Java client programs use JSSE (part of the Java environment). JSSE is not a part of the EMS product. C client programs can use the OpenSSL library shipped with EMS.

For more information, see SSL Protocol

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