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Radix II, Inc. specializes in Systems Security, including Linux/Unix system hardening, US Dept. of Defense (DoD) Security Technical Implementation Guide (STIG) implementation + compliance, and supporting systems with DoD certification and accreditation process requirements. Founded in 1973, we have decades of experience working with Federal Government and commercial users.

We can perform operating system hardening and assist with acquiring and maintaining required systems security posture through all or part of the secured server Life Cycle:

  • Initial hardening prior to system installation into Production...
  • Periodic security reviews/mitigation (i.e. upgrades), and/or...
  • Ongoing security sustainment in the Production environment.

About Us/Our Services


Systems we've secured include, but are not limited to: Avaya Unified Communication servers, Joint Interoperability Command (JITC) certified servers, third-party Linux/Unix- and Windows-based application servers, and legacy systems. 

Radix II has provided systems security services for DoD/Federal Agencies and commercial entities including: Air Force, Army, Navy, USMC, DLA, DFAS, DHA, Intelligence Communities, Treasury, and commercial banking.  As part of our systems security services we have assisted customers with responding to, mitigating or remediating Assured Compliance Assessment Solution (ACAS) or Nessus,  Security Content Automation Protocol (SCAP) and manual STIG review findings for a variety of Linux, Unix and Windows servers according to site-specific requirements.