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Part IV. Cephx Config Reference

The cephx protocol is enabled by default. Cryptographic authentication has some computational costs, though they should generally be quite low. If the network environment connecting your client and server hosts is very safe and you cannot afford authentication, you can turn it off. We recommend using authentication.

Note

If you disable authentication, you are at risk of a man-in-the-middle attack altering your client/server messages, which could lead to significant security issues.