TNOR Guard is a technology that provides controlled information flow between networks with different system and application security policies.
The TNOR Guard (TOE) is part of the XOmail product family for messaging and information exchange in mission-critical military and civilian networks. The Guard implements high-assurance information flow control for the trusted exchange of information across security domain boundaries. This product is also described in this report as the Target of Evaluation (TOE).
The main security feature of the TOE is to mediate a one-way or bidirectional flow between two security domains. The TOE inspects every information object that is requested sent between the security domains, and makes an automated release decision according to configured policy.
The TOE covers the following four Guard products:
- STANAG 4406 Ed 2 Message Guard For connectivity towards the NATO standard Military Message Handling System (MMHS),
- SMTP Message Guard (E-mail) For connectivity towards standard e-mail systems such as Microsoft Exchange. Supports RFC 6477 for Military Message Handling attributes within the SMTP domain,
- Chat (XMPP) Guard Instant Messaging service between security domains.
- XML/SOAP Guard Exchange of XML/SOAP data between security domains.