Secure RS-232 Cross-Domain Isolators

Air-gapped networks of different classification levels secure higher classification domains from data exfiltration or from being infected with malicious code. However, this siloed approach creates workflow and usability issues when data needs to be transferred between domains.

Answering this challenge, HSL has developed specific cross domain managed data transfer solutions that facilitate the exchange of data while protecting against both data exfiltration and malicious attacks. HSL’s Cross Domain product family is based on two fundamental security mechanisms:

• One way transfer (OWT), implemented as a data diode device. OWT enforces unidirectional data transfer so that data from a higher classification is physically prevented in hardware from flowing back towards a lower classification device.
• Data Filtration, implemented using pre-defined data schema, ensures that only authorized data is transferred between domains.