Christopher Brown
Lexington Park,MD
Summary
Seasoned System Administrator seeking a position as an Information Systems Security Officer (ISSO) where I can leverage my experience/knowledge of NIST framework, ACAS, DISA StIGs, POA&Ms and IAVM compliance. Experienced Windows and Linux Systems administrator. Handles weekly IAVM mitigations, demonstrates ability to meet deadlines, set priorities and troubleshoot higher level technical issues. Knowledgeable in other information security tools and technologies, such as IDS/IPS, Firewalls, SIEM and NSA Type-1 encryption devices. Experience in customer services as a Business Account Manager who assisted clients by gathering requirements and providing best solutions. Excellent interpersonal communication skills. Known for approachability, diplomacy and calm demeanor. Provided leadership and guidance within a team environment.
Overview
4
4
years of professional experience
Work History
Systems Admin
Rollout Systems
05.2022 - Current
- Managing the implementation and maintenance of Nessus ACAS for vulnerability scanning and remediation on both enclaves
- Conducted regular Nessus ACAS scans, analyzed scan results, and provided guidance to administrators on addressing vulnerabilities and achieving compliance with DOD security requirements
- Operating System, software, and hardware hardening by encrypting host drives with TPM, applied latest patches from Developers frequently, enabled built-in features such as Microsoft Defender or (EPP) Endpoint Protection/(EDR) Endpoint Detection software
- Daily system administration across a Distributed system environment, security devices, distributed applications, network storages, messaging platforms, with consistent systems monitoring and maintenance
- IT administration role managing Domains, Domain controllers, Active Directory environments, GPOs and User management
- Diagnosing and resolving SDREN outage issues for customers, Monitored Multicast/VTC Events for all Branches of the Military, SPLUNK log management and SIEM tool utilization to search, gather, analyze, and monitor logs and events from operating systems, applications, servers, network and security devices, intrusion management systems, etc to uncover risk and vulnerabilities to both enclave’s
- Established effective communication channels between cross-functional departments to facilitate prompt exchange of relevant cybersecurity information.
- Collaborated with IT teams to integrate security best practices into system development and operations.
- Maintained compliance with standards such as HIPAA, GDPR, ISO 27001, NIST, POAM, IAVM, and DISA by enforcing strict protocols and controls.
- Submitted and tracked CCB's for change request management.
Systems Admin
Greenfield Engineering Corporation
03.2021 - 03.2022
- Conducted security audits, risk assessments, and investigations to identify and mitigate potential security risks and vulnerabilities during the (SSP) System Security Plan/ (ATO) Authorization to Operate
- Collaborated with other security professional, (IAO) Information Assurance Officer, Senior Systems Administrator, and (AO) Authorizing Official, and stakeholders to ensure information systems were operated securely and in compliance with DOD guidelines during ATO process
- Applied DISA STIGS to new Windows 10 Workstations and Server 2016
- Installations, configuration adjustments, troubleshooting and routine maintenance utilizing Windows based Servers and Workstations i.e
- (hardware and software) within a Windows Active Directory environment to ensure confidentiality, integrity, and availability
- Daily systems administration across server-based systems, security devices, distributed applications, network storages, messaging platforms, with consistent systems monitoring and maintenance
- Discussions and overview on networks, applications, customer service issues regarding hardware security and sustainability
- IT administration role managing Domains, Domain controllers, Active Directory environments, GPOs and User management
- Installed and configured Hyper-V Virtual Machines for Windows Server 2016 production & standalone networks
- Performed Risk Management Framework (RMF) accreditation packages for ALE test networks both managed and unmanaged
- Completed two phases of authorization (ATO) accreditation packages for ALE test networks
- Managed IT Portfolio Management systems, Department of Navy Applications and Database Management System (DADMS) for any new and existing applications across the ALE network
- Daily IT asset registration for new equipment on a PITC network
- Created technical software manuals for installing and configuring training software distributed to end users.
Jr. Systems Admin
Resource Management Concepts
01.2020 - 02.2021
- Systems Administration support within Windows based operating systems environments, Provide IT related support within a program office heavily driven by Information Technology infrastructures, Perform day to day Systems Administration functions supporting RDT&E end users ,(Windows Server 2016/2019, Windows 10 OS support), Installation and deployments
- Provided technical support for hardware/software configurations and applications, Windows Server 2016/2019, Windows 10 OS maintenance, implementation & troubleshooting, Performed security remediation & patching procedures , Daily on-site support to remote based end users through (Anyconnect), VPN Client, Manage user accounts, groups, and control access rights within an Active Directory environment, Configured automatic updates for network based clients using Group Policy (GPO), TCP/IP Network Configuration
Education
Associates of Arts - Hospitality Administration & Management
Johnson & Wales University
01.2000
Skills
- ACAS Operator & Supervisor (2023)
- NIST Risk MGMT Framework (2023)
- NIST Cybersecurity Framework (2023)
- Linux Certification (2021)
- Windows 10 Certification (2020)
- ESS Admin 201 & 301 EPO (2022)
- AWS Cloud Practitioner (2022)
- Type 1 encryptors to include KG175D/F/N and KG250X/XS
- VMware ESXI
Timeline
Systems Admin
Rollout Systems
05.2022 - Current
Systems Admin
Greenfield Engineering Corporation
03.2021 - 03.2022
Jr. Systems Admin
Resource Management Concepts
01.2020 - 02.2021
Associates of Arts - Hospitality Administration & Management
Johnson & Wales University
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