S7-1500R/H redundant system
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System Manual, 10/2018, A5E41814787-AA
Protection
8
8.1
Overview of the protection functions
Introduction
This section describes the functions for protection from unauthorized access:
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Access protection
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Know-how protection
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Protection by locking the CPUs
Other CPU protective measures
The following measures provide extra protection against unauthorized access from external
sources and through the network:
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Do not activate time-of-day synchronization over NTP servers.
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Do not activate PUT/GET communication.
8.2
Configuring access protection for the CPU
Introduction
The S7-1500R/H redundant system has four different access levels to limit access to specific
functions.
By setting up access levels and passwords, you limit the functions and memory areas that
are accessible without a password. The individual access levels and corresponding
passwords are specified in the object properties of the CPUs.
Rules for passwords
Ensure that passwords are sufficiently secure. Passwords must not follow a machine-
recognizable pattern.
Apply the following rules:
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Assign a password that is at least 8 characters long.
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Use different cases and characters: uppercase/lowercase, numbers and special
characters.
Summary of Contents for Simatic S7-1500H
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