Lyle Treese

Linux Systems Administrator

Taft, Tennessee, United States

About

Meets Information Assurance functions as described in Chapter 3 of DoD 8570.01-M for Technical level 2 and Manger level 1. Active TS/SCI by DoD CAS with working knowledge of multiple operating systems to include Linux / Unix systems (Redhat, SunOS, AIX, Redhat IdM, Redhat Satellite, Ansible Automation Platform) and Microsoft Servers / Workstations to include AD, DHCP, and DNS and other tools needed for Cyber Security. In addition to the work experience below, I run a home lab using Proxmox as a Type I Hypervisor building and managing multiple virtual servers and storage to include a media and network monitoring server to include consumer grade CCTV with NVR covering 16 acres. Navy veteran with over 23 years of experience achieving the rank of Chief Petty Office Electronics Technician on submarines.

Experience

  • Systems Administrator (Journeyman) at COLSA
    Jan 2023 - Present · 3 yrs 7 mos

    Linux System Administration and technical support for Aviation and Missile Center (AvMC) Enterprise Information Technology Support Services (EITSS) contract on Redstone Arsenal dealing with over 600 Linux systems (physical and virtual within VMware Sphere and Cloud Director) and over 160 Linux users on an unclassified network. Responsible for enterprise level administration of Red Hat Satellite server, Red Hat Identity Manager (IdM), Ansible Automation Platform, and STIG Manager. Use VSCode for creating and maintaining Ansible Playbooks, BASH scripts, and Python scripts and pushing the code to GitLab. Used GitLab for storing Ansible playbooks and software to pull / push configurations to Linux systems in the AvMC EITSS area of responsibility. Used Jira ticketing system to answer and work issues presented to the G6 Linux Team from users or managers. Issues ranged from simple password resets (Tier one), customization of the Linux OS or assisting users / dev with configuring applications within the Linux OS to support the AvMC mission (Tier two ) to building / supporting enterprise solutions like Elastic, ACAS, and Thycon (Tier three). Maintained baseline configuration for accredited systems to support Certification Data Package (CDP) and ISSO requirements by using the DISA STIG (Security Technical Implementation Guide) by using applications like EvalSTIG to remotely run STIG Benchmark checks on Linux systems and used STIG Manager to manage and complete checklist. Presented results to the ISSOs to include POAMs for open vulnerabilities. Weekly remediation of Linux based systems for Cyber security vulnerabilities reported by various reporting tools used in AvMC EITSS.

  • Principal Cyber Systems Administrator at Northrop Grumman
    Apr 2022 - Jan 2023 · 10 mos

    A member of Defense Systems supporting the Integrated Air and Missile Defense Battle Command System (IBCS) foreign military sales efforts. IBCS integrates disparate radars and weapons to construct a far more effective IAMD enterprise. IBCS delivers a single integrated air picture with unprecedented accuracy and broadens surveillance and protection areas. By implementing IBCS into their militaries, other nations will transform their IAMD capabilities in a manner consistent with the U.S. Army. Responsible for performing system wide monthly updates per approved Change Requests (CR) to the infrastructure on three networks (one unclassified and two classified) with use of online and off line YUM servers and WSUS servers using manual and automation means with Ansible, Ansible Tower, and GitLab. Followed up by using Tenable Security Center and Vulnerator to verify implementation of updates and the security position of the IBCS infrastructure. In addition, responsible for ensuring the Tenable and Nessus servers have the required access to the product line in all three networks. Maintains smooth operation of multi-user and multi-OS computer systems, including maintaining YUM servers, WSUS servers, Nessus servers, Tenable Security Center servers, and other servers as needed on three networks. Coordinates with network administrators, VMware administrators, and other administrators when needed. Develops and monitors policies and standards for allocation related to the use of computing resources and Cyber posture. Ancillary duties include setting up administrator and service accounts, maintaining system documentation, tuning system performance, installing system-wide software, allocating mass storage space, and reviewing Basis of Estimate (BOE) within the Defense Systems.

  • COLSA Corporation ()
    • System Analyst II
      Sep 2019 - Apr 2022 · 2 yrs 8 mos

      Located at MDA Advanced Research Center (ARC), provides technical oversight, hands-on support, and maintenance of hardware and software involved in the participation of Flight and Ground tests or training events involving Warfighters and other contractors. Administrating 12 RHEL 7 Ground Test computers to include 10 SunOs support computers. Administrating the ARC unclassified and classified YUM server to include maintaining a YUM satellite repo server. In addition, administrating 9 Windows 10, 2 Domain Controllers running Windows Server 2016 with over 100 classified Computer objects and over 200 User objects, 2 Member Servers running Windows Server 2016 with Veeam Backup and Replication software on different networks. Lastly, maintaining Two-factor authentication using RSA Secure ID Tokens and administrating Users and Computers within the RSA Secure ID application. Implementing changes via approved Engineering Change Request (ECR) and maintained baseline configuration for accredited systems to support Certification Data Package (CDP) and ISSO requirements by using the DISA STIG (Security Technical Implementation Guide) and SCAP (Security Content Automation Protocol) application. Maintained cybersecurity and MDA ISSM requirements by using HBSS, RSA Secure ID, LCE, Security Center, IAVM patching, and various other administrative tools to review weekly events for accredited systems. In addition, implemented and maintained data recovery processes per RMF requirements with the use of Veeam’s Backup and Replication software on different networks with over 150 systems (Windows and Linux based). Provided technical support, utilizing automation tools for delivering applications (COTS and GOTS), managing assets, monitoring performance, event notifications, and automating workstation support on Windows and Linux systems along with reports to management, superiors, and ISSOs

    • System Analyst I
      Aug 2017 - Sep 2019 · 2 yrs 2 mos

      Located at MDA Advanced Research Center (ARC), provides technical oversight and hands-on support and maintenance of hardware and software involved in the participation of Flight and Ground tests or training events involving Warfighters and other contractors. Implemented the migration of Windows 10 by approved Engineering Change Request (ECR) and maintained baseline configuration for accredited systems to support Certification Data Package (CDP) and ISSO requirements, along with introduction of Two-factor authentication using RSA Secure ID Tokens. Using the DISA STIG (Security Technical Implementation Guide) and SCAP (Security Content Automation Protocol) brought 20+ systems up to standards to achieve a 96% technical compliance on a 2017 CCRI. Implemented and maintained cybersecurity using HBSS, RSA Secure ID, LCE, and various other administrative tools to review weekly events for accredited systems. In addition, implemented and maintained data recovery processes per RMF requirements with the use of copying data and Veeam software. Provided technical support, utilizing automation tools for delivering applications (COTS and GOTS), managing assets, monitoring performance, event notifications, and automating workstation support on Windows and Linux systems along with reports to management, superiors, and ISSOs. Maintained a Windows domain using Windows Server 2016 to include adding/removal of users and computers, maintaining Group Policy Objects for over 65 classified systems, ensuring systems maintain high level of cybersecurity compliance by implanting DISA STIGs, IAVM patching, and MDA ISSM requirements. In addition, administration of a backup solution using Veeam Backup & Restore software. On Linux based systems, removed and added users, review audit logs, adding additional Ethernet connections and general administration. Created scripts in Windows for housekeeping functions, in addition edited existing scripts on Windows and Linux for housekeeping functions.

    • Technician II
      Dec 2014 - Aug 2017 · 2 yrs 9 mos

      Located at the Advanced Research Center (ARC), provided complex technical support to assigned areas, such as research, design, development, testing, troubleshooting, and repairing complex problems. This included hardware support, manufacturing process improvement, installation / maintenance / configuration of Windows systems, security systems, and/or audio and visual systems. To include routing of network cables, setting up and configuring computer systems in an Unclassified and Classified environment. Performed hardware and software upgrades using schematics, diagrams, written/verbal descriptions or from defined plans. As a technician, responsible for assisting others, including customers, engineering testing, or experimental testing, in using audio/video/computer equipment or other special equipment that may be somewhat complex in nature. Gives recommendations for solutions to problems done by research work or other means via written and/or oral reports on a regular basis. Knowledge of desktop application including word processing, spreadsheet, and database programs used for tracking work and various other job-related activities. Selected as a member of the Occupant Emergency Organization Team for the Advanced Research Center. Meets government security investigation to access classified information and holds a Secret clearance.

  • US Navy (23 yrs 3 mos)
    • Chief Electronics Technician - Combat Systems' Project Manager
      Mar 2010 - Apr 2013 · 3 yrs 2 mos

      Directly supervised and managed 6 Chief Petty Officers and 81 Sailors in all phases of Submarine Combat Systems maintenance, planning, and execution of 10 Pre-Overseas Movements, 8 Continuous Maintenance Availabilities, 19 Concurrent Avails and 2 Engineering Refueling Overhauls consisting of 917 work requests averaging 55,422 man-hours on seven Norfolk, Virginia based Los Angeles Class submarines. ■ Coordinated, planed and overseen all submarine Combat Systems related special grooms, surveys, and inspections conducted by outside organizations. ■ Leads and manages Sail Coordination meeting, which entails planning current day work and then next 72 hours planned operations. ■ Attends and contributes to required meetings to include daily production with senior management, work scoping, arrival conferences, and work planning, providing status of all jobs in progress or planning phases. ■ Developed, maintained, and analyzed performance measurements defining the quality of submarine force maintenance and modernization and compliance with all environmental standards. Using obtained data, made recommendations for improvement in quality, efficiency and cost. ■ Selected to stand Repair Duty Officer, a watch normally manned by Officers, to ensure timely completion of Submarine Avails at NNSY Fleet Maintenance Submarines. Security Clearance: Secret ; Security Investigation: SSBI

    • Chief Electronics Technician - Leading Chief Petty Officer
      Dec 2006 - Mar 2010 · 3 yrs 4 mos

      Leading Chief Petty Officer managing 20 personnel for the TRIDENT II D5 Backfit SWS preventive and corrective maintenance of the $10 million Navigation System and communications equipment, operation, and management. ■ Meticulous Planner and Administrator - Managed travel arrangements for specialized training located over 600 miles away. Audited and reviewed significant ship’s publication including the Ship’s Systems Manual and the Standard Submarine Navigation/Operations Department Organization and Regulations Manual resulting in the flawless execution of pre-underway’s, undocking, and the creation of the LAN division. The foundation of what the Senior Inspector called “Best DASO inspection in recent years.” by completing all the Strategic Navigation Systems pre-requisites for the Demonstration and Shakedown Operation (DASO) resulting in the USS ALASKA returning to the Strategic Deterrent Triangle. ■ Superb Problem Solver – Identified critical ship safety vulnerability, took the initiative and conducted a comprehensive and thorough test of portable radios and initiated the purchase order for the improved radios enhancing the ship’s casualty command and control posture. Restored the ship’s commercial GPS system prior to undocking following a 16 month dry-dock period with all of the ship’s electronic navigation equipment out of commission. This directly resulted in the safe navigation of ALASKA throughout this complicated evolution. ■ Dynamic leader - During the Engineered Refueling Overhaul lead the restoration of the ship’s interior communication systems and entertainment equipment to support training and crew morale. Driven to produce above average results from inspections, resulting in his division being evaluated at 88 of 100 points in the Strategic Navigation System Team Trainer, above the fleet average of 82 points. Security Clearance: Top Secret / SCI Eligible Security Investigation: SSBI

    • Chief Electronics Technician - Lead Instructor
      Jun 2003 - Dec 2006 · 3 yrs 7 mos

      Training and support of Atlantic Fleet TRIDENT II submarine crews to include planning, organizing classrooms, and instructing 18 classes for over 126 students in the performance of Strategic Weapons System Navigation Subsystem maintenance, diagnoses, calibrations, and theory. In addition, Submarine Interior Communications systems to include repairing of remote electo-hydraulic valve indications, operating the Central Atmosphere Monitoring System - with zero academic attrition. ■ Team Player – Aggressively pursued instructor qualifications to instruct junior Sailors, junior Officers, and prospected Commanding Officers in the D5 Backfit Navigation Subsystem. Identified and corrected over 330 error related to incorrect or missing NEC entries for fleet personnel; a Submarine Learning Center, Special Projects, and ET Community manager item of concern. The correction of these errors directly improved the Navy’s ability to properly manage billets. ■ Command / Community Support - As Personal Excellence Partnership Program coordinator, he personally coordinated and supervised 15 volunteers who provide numerous hours of community service mentoring over 1600 local school students. This dedication and effort played a significant role in the command receiving an Honorable mention for Medium Shore Command for the 2003 Personal Excellence Partnership Flagship Award and in 2004 received the Community Service Health, Safety, and Fitness Flagship Award. ■ Meticulous Planner and Administrator - in support of the CNO’s Revolution in Training, coordinated numerous upgrades and improvement to training resources including the removal of approximately $40 million worth of Trident Navigation Commonality Program equipment, the addition of a PC Simulator Room in support of installation of the Laptop Navigation Operational Trainer, the Hovering Missile Compensation Maintenance Simulator, and the Launcher Simulator. Security Clearance: Secret. Security Investigation: SSBI.

  • Community Advisor at American Campus Communities
    Mar 2010 - Mar 2013 · 3 yrs 1 mo

    The Navy has committed to improving the living quarters for its enlisted personnel as part of its overall "Quality of Life" Initiative. In order to accomplish this objective quickly and cost-effectively, a public/private venture project for single E-1 to E-4 to provide safe, secure and well-maintained housing accommodations was created and called "Homeport Hampton Roads" in the Norfolk, Virginia area. ■ Presented a high level of services to residents while providing a residential environment conducive to naval traditions and personal success by coordinated and leading 72 events for over 3,450 residents and distributed over $4,320 in gift certificates per year. ■ Maintained community standards and safety by documenting behaviors of residents that violate the law or the lease agreement, and take appropriate action to stop the behavior; communicate, and enforce community safety, emergency, and fire evacuation policies and procedures, providing emergency response and referral services and resources. ■ Performed administrative tasks by assigning the other 20 Community Advisors work assigned "Community/Resident Assistant On-Call" shifts, which may include weekdays, weekends, and/or holidays, complete and submit required reports, and distribute materials and messages from or approved by the management. ■ Valued team player by encouraging a "whatever it takes" attitude among the other Community Advisors, attend, and constructively contribute to, all meetings and any special/emergency meetings, and participate in recruitment, and training of all new Community Advisors. ■ Developing a sense of community by encouraging residents to attend and /or participate in community and sponsored events; plan, attend, document and evaluate community wide social, recreational events; mediate conflict and help residents to create a respectful living community.