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Security in Simulation – A Step in the Right Direction

ABSTRACT: A number of approaches are currently in use to allow limited sharing of data between simulationsrunning at different native classification levels, but each have their associated issues which prevent full interoperability. This presents users and accreditors alike with a unique set of challenges. Building on the work presented to recent SIWs by NATO MSG 080 (Security in Collective Mission Simulation) the Security in Simulation Standing Study Group has been considering the role standards might play in making progress towards a Cross Domain Solution.


This presentation summarises the work of the SSG showing how it has built on past papers and the work of NATO MSG-080 to identify where standards might contribute to – if not a full Cross Domain Solution – at least to making progress in this area.


The SSG members propose to draw on national use cases to create a set of guidelines for best practice, to create a taxonomy of terms commonly in use and to create a Security overlay for DSEEP. The paper will examine some of the use cases to consider how they might be applied across the various approaches, where they highlight common challenges and what this might mean for the proposed product nomination. SISO cannot expect to influence the policies and processes of individual nations, but engagement with their accreditors is an important factor and it is hoped this paper will provide sufficient material to stimulate engagement and obtain their buy-in.

Authors: Stella Croom-Johnson, Wim Huiskamp, Björn Möller
Publication: Proceedings of 2013 Fall Simulation Interoperability Workshop, 13F-SIW-009, Simulation Interoperability Standards Organization, September 2013

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Extended FOM Module Merging Capabilities

SISO SIWzie award winner

ABSTRACT: The HLA Evolved specification describes a number of FOM Module merging principles whereby classes, data types, etc. from different modules can be merged into the FOM of a federation. Based upon practical experiences with FOM modules, this paper proposes three additional capabilities for the next HLA version. They are particularly useful, and in some cases necessary, when reusing and extending standardized FOMs, for example the RPR FOM. They can also be designed so that backwards compatibility is maintained.


The first capability is to enable a module to add attributes to an already existing object class. This enables federations to extend object classes of a reference FOM without modifying the reference FOM.

The second capability is to enable a module to add DDM dimensions to an already existing attribute or interaction class. This enables federations to use DDM filtering for concepts described in a reference FOM. An even more powerful approach would be to not require dimensions to be explicitly specified in the FOM for attributes and interactions classes, which would increase flexibility.


The third capability is a development time rather than runtime FOM merging capability. An enumerated data type in a FOM should be able to reference and include a separately stored list of enumerated values. This would simplify the usage of enumerations in the RPR FOM, where several enumerations, with a large number of values, are shared with the DIS standard.

These three capabilities are presented in detail for discussion and possibly inclusion in the next version of HLA.

Authors: Björn Möller, Andy Bowers, Mikael Karlsson, Björn Löfstrand
Publication: Proceedings of 2013 Spring Simulation Interoperability Workshop, 13S-SIW-004, Simulation Interoperability Standards Organization, April 2013.

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