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Secure connection for redundant networks

22 October 2013

The new security module - Scalance S627-2M - from the Siemens Industry Automation Division, is designed to protect automation networks from unauthorised access by means of a firewall.

In this way, redundant network structures, such as redundant rings, can also be securely connected, according to MRP (Media Redundancy Protocol) or HRP (High Speed Redundancy).
Scalance S627-2M is equipped with three fixed electrical ports, including one secure and one DMZ (Demilitarised Zone) port, as well as two slots for media modules that can be optionally connected. The user is also able to add up to two electrical or optical ports per media module and integrate the security module directly in optical networks.

Fault-tolerant connections are possible with of two of the units used in parallel. As soon as one security module fails, the second device is automatically activated from standby mode and takes over data traffic.

With a total of seven ports, Scalance S627-2M enables protection of varied network topologies with firewalls. For example, the security module can connect redundant rings with a backbone cable or two ring structures, as well as link individual automation cells to a higher-level network. With the help of various media modules, mixed networks can also be set up with electrical and optical connections both in long-range single-mode and in multi-mode with more bandwidth.

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