Nexor Sentinel by Nexor is a high assurance email guard built upon an EAL4+ evaluated product and listed on NATO’s NIAPC catalogue. Nexor Sentinel ensures that data is travelling in the intended direction and helps prevent covert channels, reducing the attack surface on components further down the line by limiting unauthorized data transfer. It verifies that data transfer conforms to a specified security policy, reducing malware risk, preventing sensitive data leaks, and ensuring appropriate controls for data release between networks. Nexor Sentinel mitigates security breaches that could lead to unauthorized access, providing message guarding and validation for both SMTP and X.400 email messages. Messages can only pass between domains via a trusted, secured path. All messages are scanned and validated; non-conformant messages are rejected and quarantined, preventing damage from sensitive information loss or malicious content. Nexor Sentinel supports both SMTP and X.400 email messages, and its full message logging provides traceability of communication exchanges to ensure the integrity of the system.
