DAVID L. NATION

17365 S. Empire View Place

Vail, AZ 85641

(520) 241- 6865
nation2k@gmail.com

 

SUMMARY:

·               CompTIA Security+ CE Certified.

·               Previous DoD/DoS Secret security clearance.

·               Familiar with ITIL Framework best practices.

·               20+ Years experience providing solutions for network/wireless connectivity, infrastructure, TCP/IP, Microsoft operating systems, Cisco hardware, applications, servers, desktop PCs and peripherals.

·               Advanced knowledge in the use and support of Microsoft Windows operating systems including: Server 2012, Server 2008, Server 2003, Win2K Pro/Server, Windows 7/8.1, Windows 10.

·               Experienced with computer hardware architecture, building, upgrading, hard-disk imaging, diagnosing and repairing desktop PCs, servers and peripherals.

·               Experienced with administering Microsoft Exchange Server 2003/2007/2010/2013, Blackberry, Android & Apple wireless devices/software configuration and management.

·               Knowledgeable in network infrastructure: domain administration, Active Directory, group/user management, clustering, implementation, migration, security, Information Assurance Vulnerability Alert (IAVA) scanning & patching, data back-up and recovery, virtualization, VMware ESXi, Storage Area Network (SAN), Network Attached Storage (NAS).

·               Familiar with Linux/Unix operating systems.

·               Knowledgeable in LAN/WAN infrastructure administration: Cisco, switches, routers, firewalls (Juniper, Fortinet, Palo Alto, Cisco ASA), IDS, IPS, network monitoring, Solarwinds, Ethernet, 802.11x (WIFI) 2.4Ghz/5.8Ghz, Ubiqiti, MikroTik, 1GigE (1000BASE-T/TX), fiber, VPN, installation, troubleshooting, configuration, and management.

·               Knowledgeable in VSAT, and ground to air communications technologies: SATCOM, VHF, UHF, FM, HF, COMSEC, Motorola handhelds/Vehicle mounted radios, repeaters/duplexing/multiplexing, military communications systems, PRC-152, PRC-117.

·               Knowledgeable in VOIP and PBX/telecom systems.

·               Proven record of solid customer service/interpersonal skills.

 

EXPERIENCE:

December 2015 – October 2016

Teksystems Inc. (Contractor to FTE)

Network/Systems Engineer

Tucson, AZ

Provide day-to-day operational activities in support of the court information technology network and computing infrastructure. Responsibilities include network and system design, documentation and administration, server and network performance monitoring; capacity planning, disaster planning/recovery, and security procedures and remediation.

 

May 2015 – September 2015

Teksystems Inc. (Contractor for Ascension Healthcare)

Network Technician

Tucson, AZ

Manage and maintain network and Internet connectivity across Metro Area Network. Configure and deploy Cisco & Avaya Switches and routers, Cisco wireless Access Points. Maintain network security. Inventory hardware. Make hardware recommendations for refresh. Produce network diagrams. Manage cabling and rack space in communications closets.

 

May 2013 – April 2015

Teksystems Inc. (Contractor to FTE for Intuit Inc.)

IT Secure Applications Administrator

Tucson, AZ

Provision, modify, and remove role-based access for users of internal applications and Active directory. Document and track requests in Remedy ticketing system and Service-Now. Maintain service level and account security auditing within the requirements established as part of the Sarbanes Oxley act (SOX), SA-16

 

 

 

 

August 2010 – January 2013

Department of State contractor

Triple Canopy Inc, Iraq, SWA

IT Manager/Comm & IT Specialist

Active DoS Secret Security Clearance

Administer and manage, LAN/WAN hardware, software, virtual servers (VMware ESXi 5.5), and information security for: Windows Server 2003, 2008, 2012, Linux Servers, Exchange 2007/2010, Cisco switches, routers, WLAN (802.11x) Ubiquiti, MicroTik, firewall, Data backup and recovery, disaster recovery planning, PBX for VOIP, and WAN utilizing VSAT to connect to commercial internet, for up to 1000 users. Install and terminate CAT-5/6 cabling. Install, maintain, program, and configure, local/area wide repeaters, base stations, vehicular and portable radios, Crypto, COMSEC, SATCOM, and GPS, to support communications in a hazardous environment. Troubleshoot and diagnose problems with Motorola and military radios (PRC-117/PRC-152), network and internet connectivity, computing systems and all peripherals, and service copiers. Keep an inventory of all computers and communication equipment. Manufacture coaxial RF and satellite communications cables. Repair equipment and/or report replacements as needed. Provide systems training to contractor employees and subcontractors in basic computer operation, (e.g. databases, word processing, and e-mail functions). Install and maintain coaxial cable systems for television reception. Improve data communications efficiency by implementing and managing; virtual servers, fileservers, SAN/NAS, Bluecoat bandwidth management/packet shaping hardware, and secure wireless bridges. Develop, deploy, and maintain Access Control Lists (ACL) for LAN security.

 

September 2007 – August 2010

General Dynamics IT, Sierra Vista, AZ

CONUS - Theater Network Operation Security Center (C-TNOSC)

US Army, Fort Huachuca, AZ

Network Analyst

Active DoD Secret Security Clearance

Remotely manage US Army network sites throughout the Continental U.S. (CONUS), sustaining network operations and security through collaboration with other Network Operation Centers (NOC), enforcing Authentication, Authorization, and Accounting (AAA). Deploy single DMVPN and dual DMVPN utilizing dual hub designs for partially meshed networks, optimizing network resources by using Next Hop Resolution Protocol (NHRP) to establish direct spoke to spoke VPN connections. Proficient with Access Control Lists (ACL), enhancing ACL efficiency and effectiveness by reducing ACL statements through summarization, and conserving router CPU processes by properly placing highly probable matching statements.  Deploy OSPF and BGP for dynamic routing.  Manipulate routing path by implementing route-maps to achieve effective routing policies and network redundancy.  Control network advertisements through the use of distribution-lists to eliminate network leakage and from being a transit point. Within an ITIL Framework environment, expertly operate network management tools such as Spectrum, Remedy/ITSM, Nethealth and Ciscoworks. Monitor real time network operations, status, and logs along with collaborative team efforts to solve any network and security issues, preventing network outages, intrusions, and attacks. Strengthen network security through the use of firewalls. Deploy granular security policies to inspect traffic coming from the Untrust Zones. Control access by thoroughly reviewing access requests, ensuring other traffic is not degraded while maintaining network integrity.  Maintain and troubleshoot LAN/WAN circuit technologies such as VLAN, ATM, Frame Relay, and MPLS. 

 

March 2005 – June 2007

Perot Systems Corp. (Northwest Medical Center), Tucson, AZ

Desk-side Support Analyst (Level II)

Support and troubleshoot hospital data networks consisting of nearly 2500 users and over 1000 PCs, 30 servers (Domain controllers, Active Directory, Exchange 2003, File Servers, DHCP, DNS), MAN, WAN, and the integration of information among these systems, data backup and recovery, disaster recovery planning, and support projects as assigned. Supervise technical staff and manage help desk, assist the network manager in determining suitability of hardware and software to best meet the end users needs. Train and provide troubleshooting support for end-users, in the use of PC hardware and software applications. Assist HDIS in IS projects, such as new installation and implementation, including, but is not limited to, organizing timelines, ordering and installing equipment and software, while working with appropriate vendors and corporate support teams to complete projects in a timely manner.

2004 – 2005

Rent-A-Techie Inc., Tucson, AZ

IT Field Technician

Provide on-site customer service, training, and support for hardware/software on PC and Apple Macintosh platforms. Diagnose and resolve: hardware/software, networking, connectivity and printing issues. Detect and remove spy-ware/ad-ware/viruses. Address and resolve system performance issues, document troubleshooting steps, diagnoses, and resolutions.

 

EXPERIENCE: (Continued)

1998 – 2004

Convergys Corp. (Formerly Keane Inc.), Tucson, AZ

Senior Technical Support Analyst, Microsoft Product Support Services

Provide Tier II technical consultation, escalation services, and training to Tier I support technicians. Provide Windows operating systems support to Microsoft customers. Author and publish technical content for Microsoft’s Knowledge Base. Accurately, efficiently, diagnose and resolve technical issues related to Windows operating systems, networking, LAN/WAN, connectivity, applications and hardware. Recognized and awarded as one of Microsoft’s top 25 contributors to customer satisfaction and quality in 1999 - 2002. Recognized for contributing to the company’s success by developing technical/customer service related tools, resources.

 

1995–1997
United States Army, Fort Sill, OK

Signal Support Systems Specialist/Information Systems Operator-Analyst

Install, maintain and repair communications equipment, including computers, servers, associated hardware, radio and telecom equipment. Designed, implemented, and administered a secure 100Base-T 200 client LAN consisting of Microsoft NT 4.0 Server/Workstation, NT 3.51, Exchange. Assisted in the implementation and wiring of a PBX telecom system, trained and supported end-users in the use and functionality of PCs, Microsoft Windows NT, Win95, as well as Microsoft productivity applications. Contributed to overall mission success; through assessing, testing, and performing software/hardware upgrades of critical military information systems in association with Y2K compliance. Obtained advanced knowledge of PC architecture and hardware components. Administered and maintained a SQL database to track critical military information system assets and the impact Y2K would have on them.

 

EDUCATION AND PROFESSIONAL TRAINING:

2007 – 2010, General Dynamics Information Technology

Secret Security Clearance (Re-activated)

Security+ (2008 Edition) Certification

Network+ Certification Course

Cisco CCNA self study course

2005 – 2007 Northwest Medical Center, Tucson, AZ

Microsoft Windows 2000 Professional MCSE Course 70-210

Microsoft Windows Vista

Microsoft Windows XP Professional 

Microsoft Server 2003 administration

Cisco Routers and Switches

Active Directory domain administration
User/Group permissions & administration

Microsoft Exchange 2003, support, upgrade, migration

Disaster Recovery Planning

Symantec Ghost Server disk imaging

VERITAS Backup

2003 Convergys Technical Training Center (Microsoft CTEC), Tucson, AZ

CompTIA A+ Certification Course
Microsoft MCP Course 2151: Windows 2000 Network and Operating System Essentials (Includes TCP/IP)
Microsoft MCP Course 2152: Implementing Microsoft Windows 2000 Professional and Server

 

1998 – 2004 Convergys Corporation (formerly Keane Inc.), Tucson, AZ

Microsoft Server 2003
Microsoft Windows XP Professional/Home Edition
Microsoft Windows 2000 Professional & Server (including Active Directory)
Microsoft Windows NT 4.0
Microsoft Windows ME
Microsoft Windows 98/98SE
Microsoft Office XP

Microsoft Office 2000
Microsoft Office 97

 

1995 – 1997 United States Army, Fort Gordon, GA

Granted Secret Security Clearance
Trained in Microsoft Windows NT, 95, 3.11, Networking, PC hardware, electronics, schematics, and electronics testing equipment.

Trained in the use, installation, and troubleshooting of telecom, radio, satellite, and microwave communications equipment

 

1993 – 1994 Chaparral Career College, Tucson, AZ

Computer Systems Specialist Course