Nexor Guardian is a highly secure software application to block malicious activities in a multi-domain solution. Guardian uses configurable high-throughput content-checking capabilities and software-based security enforcement. Nexor Guardian offers the ability to deploy an integrated file validation capability to provide protection in medium-threat environments. The cross-domain data transmission enables the safe sharing of information between two trusted and sensitive networks. Policy enforcement rules depend on solution requirements and can be used to mitigate the risk of data leakage from a High Domain to a Low Domain or verify data imported from a Low Domain to a High Domain. These validation rules are enforced using an isolated content checker and an extensible set of filters.

Nexor Guardian is a flexible and modular product aligned to architectural patterns from the UK National Cyber Security Centre (NCSC). It is designed to control and validate the flow of data being transferred between networks of different trust levels. Files are admitted into the guard and held for filtering. Only files that pass policy enforcement rules are allowed to be transferred to the destination network, otherwise, they are rejected or quarantined.