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In wireless data transmission, communication is encrypted with an encryption solution that is sufficiently secure for the respective security class. If necessary, the encryption solution must be approved by the competent authority.

For example, the traffic can be tunneled with a secure VPN solution or an application-level encryption solution can be used.

• Wireless data transmission outside the physically protected area is encrypted as required.
• Wireless data transmission (e.g. wireless peripherals) that is less protected than the requirements for taking place inside a physically protected area can be accepted, if it can be ensured that the confidentiality of the information is not compromised through these connections.
• Including wireless connections with a lower safety level devices are not connected to the environment.