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Mastering Zabbix by Andrea Dalle Vacche, Stefano Lee

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Security considerations

One of the few drawbacks of the whole Zabbix architecture is the lack of built-in security at the Zabbix protocol level. While it's possible to protect both the web frontend and the Zabbix API by means of a standard SSL layer to encrypt communications, and relying on different authorities for identification, there's simply no standard way to protect communications between agents and server, or between proxies and server, or among nodes, not even when it comes to message authentication (the other party is indeed who it says it is), nor when it comes to message integrity (the data has not been tampered with) and neither when it comes to message confidentiality (no one else can read or understand the data).

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