Tenable RHEL ACAS Administrator

Leidos•Alexandria, VA

About The Position

Leidos is hiring a Tenable RHEL ACAS Administrator for the DISA GSM-O program in Alexandria, Virginia. The role is part of the Tenable ACAS team operating and maintaining DISA J6 Pentagon’s Assured Compliance Assessment Solution (ACAS), supporting timely and accurate scanning and reporting in accordance with DISA J6 Pentagon and Department of Defense policies and orders. An active Secret clearance is required before the start date; the program can support up to TS/SCI. The administrator manages Red Hat Enterprise Linux (RHEL) servers and Tenable components, analyzes systems, updates and troubleshoots applications, deploys and tests applications and tools, and communicates updates to the Tenable ACAS Lead and customers. The role also supports Tenable deployments across DISA J6 Pentagon’s area of responsibility, including scanner and Nessus Manager/Agent maintenance and tuning, scan configuration management, vulnerability scanning and reporting, and investigation and tracking of false-positive findings.

Requirements

Bachelor’s degree and 12 or more years of prior IT experience, including experience with RHEL OS, Tenable Security Center, and Tenable Nessus agents in a DoD environment; additional work experience or cyber courses/certifications may substitute for the degree.
Active Secret security clearance or higher before starting; the program can support up to TS/SCI.
DoD 8570 IAT II certification before starting.
Current RHEL certification or ability to obtain certification within six months of the start date.
Experience running ACAS on Red Hat Enterprise Linux (RHEL).
Hands-on experience with general RHEL administration and troubleshooting.
Demonstrated experience with multiple network security zones, subnetting, VRFs, and VLANs.
Strong written and verbal communication skills and ability to create complex technical reports on analytical findings.
Strong analytical and troubleshooting skills.
Motivation and ability to work as a self-starter.

Nice To Haves

Cybersecurity experience in Protect, Detect, Respond, and Sustain functions within a Computer Incident Response organization.
Advanced understanding of the cybersecurity threat life cycle, attacks, attack vectors, exploitation methods, and intrusion-set tactics, techniques, and procedures (TTPs).
Experience with malware-analysis concepts and methods.
Familiarity or experience with Intelligence Driven Defense, Cyber Kill Chain methodology, and/or the MITRE ATT&CK framework.

Responsibilities

Serve as a member of a team of Tenable specialists supporting organizations across the National Capital Region.
Manage the RHEL servers that are part of DISA J6 Pentagon’s Tenable ACAS.
Tune system performance and troubleshoot Tenable components across a large, complex environment.
Provide solution engineering support to ensure systems and components meet current and future standards.
Install Tenable software updates in compliance with STIG requirements.
Deploy, maintain, and tune Tenable scanners to meet current and future needs.
Deploy, maintain, and tune Tenable Nessus Managers and Nessus Agents to meet current and future needs.
Develop, create, deploy, and manage Tenable scan configurations.
Conduct scans and provide detailed reports to DISA J6 Pentagon leadership and scanned organizations.
Ensure ACAS scanners and Security Center are operational and reporting properly.
Assist customers with ACAS issues and make recommendations as needed.
Perform monthly vulnerability scans and create repositories, queries, and dashboards as needed to make vulnerability report information available.
Investigate false positives and potentially confusing scan results.
Develop a mechanism to track false positives, track them until findings are corrected, and provide results upon resolution.
Perform systems analysis, update and troubleshoot Tenable applications, deploy and test applications and tools, and communicate updates to the Tenable ACAS Lead and customers.