Red Hat Enterprise Linux
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Nexor connects, transforms, and protects sensitive information in cyberspace for the defence
and intelligence, government, and critical national infrastructure markets. Recognising the
limitations of developing products on an aging, proprietary operating platform, Nexor joined
the Red Hat independent software vendor (ISV) partner community and migrated to Red Hat?
Enterprise Linux?. Not only did the company benefit from an enterprise-ready, secure solution,
its customers also gained efficiency thanks to increased interoperability and a reduction in
the amount of training needed to work with Nexor products. The SELinux features in Red Hat
Enterprise Linux ensured the company did not sacrifice security.
“The main benefit for us is that we have
been able to move off a specialised,
proprietary platform. We have been able
to drive efficiency in our production
environment and have also built customer
loyalty. We can now fully integrate with
their existing systems, thus improving our
competitiveness in the market.
TEcHNIcaL DIREcToR, NExoR
customer case study
nexor acHieves common criteria
certification witH red Hat
2redhat.com Customer Case study? Nexor?achieves?Common?Criteria?certification?with?Red?Hat?Enterprise?Linux
a mainstream, open source system for customer integration
Spanning 25 years, Nexor has a rich heritage developing messaging and guard solutions for the
defence and intelligence market. Its customers are both UK and global, and also include government
departments, transport organisations, the energy sector, and police forces.
one of its key products, Nexor Sentinel, is a highly available and secure email gateway appliance that
protects user organisations by validating inbound and outbound electronic messages to conform to
the security policies of the protected domain. The original Sentinel 2.0 email product was common
Criteria-certified, an international standard for computer security that ensures customers’ security
assurance needs are met.
In order to meet the stringent interoperability and security requirements of its customers, Nexor
Sentinel has to continually evolve. This need led Nexor to review its aging hardware and proprietary
operating system, which functioned as the underlying platform for its products. The specialised
platform, consisting of the BAE STOP 6 operating system on BAE XTS-400 hardware, involved
complex maintenance and had high associated overhead, such as the cost of training customers.
meeting customer demands witH common criteria certification
In looking at an alternative solution, Nexor evaluated 3 options, including Red Hat?
Enterprise Linux?. It was essential for the new solution to support Nexor’s bid to regain Common
Criteria certification, as demanded by its customers. Red Hat was quickly identified as the open
source market leader. In addition, the SELinux components of Red Hat Enterprise Linux provide
the security levels needed to achieve Common Criteria certification.
after internal testing and evaluation, a proof of concept was run to test the application with the
latest version of Sentinel. Nexor found that Red Hat Enterprise Linux gave Sentinel the ability to
lock down and control information flow, thus delivering a successful and secure solution that
would operate with zero downtime.
3redhat.com Customer Case study? Nexor?achieves?Common?Criteria?certification?with?Red?Hat?Enterprise?Linux
The new Sentinel 3E product, running on Red Hat Enterprise Linux, achieved common criteria
EAL4 certification. As an industry standard, the product is now fully assured and delivers the level
of control Nexor customers need. Nexor expects this certification will help it further penetrate the
market, as the project has demonst