Home Resume Interests Photo Album Favorites




Larry Leenerts                                                                            


Currently certified by Microsoft, Novell, Cisco Systems, and CompTIA I seek a position where I can utilize my skills of design, implementation, maintenance and administration of a business LAN/WAN. My areas of expertise include Windows NT/2000/2003, Exchange 5.5/2000/2003, Novell 3-5x, Internet services, Web hosting, Proxy servers/firewall configuration, tape backup systems and security audits. A seasoned professional in the corporate world I am experienced with providing file & print services, help desk support, remote communications, security and domain administration. I am especially skilled at troubleshooting servers, workstations and networks. I am extremely customer service oriented.

File servers & workstations
Server OS: Windows NT 4.0, Windows 2000/2003, Windows 2000/2003 terminal server, Novell Netware 3x/4x/5x
Server Software: IIS 4/ 5/6, ISA server, Proxy 2.0, Exchange 5.5/2000/2003, SQL 2000, GroupWise, Facsys FAX services for Exchange, ArcserveIT 6.6 tape backup, Veritas Backup Exec 8.6, Trend & Symantec corporate Antivirus
Network protocols and services - TCP/IP, DHCP, DNS, WINS, RAS, VPN, IPX/SPX, Telnet
Ethernet routers, hubs & switches (3com, Cisco), Shiva communications server
Client OS & Software: Windows 9x, NT 4.0, XP, 2000, 2003, Office Suite, Outlook, Visio, IBM AS/400 client connectivity


Microsoft Certified Systems Engineer 2003 ID #1186219
• Managing and Maintaining a Microsoft Windows Server 2003 Environment for an MCSA Certified on Windows 2000
• Planning, Implementing, and Maintaining a Microsoft Windows Server 2003 Environment for a W2K MCSE
• Designing Security for a Microsoft Windows 2000 Network
• Windows 2000 Accelerated Exam for MCP’s Certified on Microsoft Windows NT 4.0
• Networking Essentials, Microsoft Exchange Server 5.5, Microsoft Proxy 2.0

Cisco Certified Network Associate v3.0
• CCNA Basics (CCNAB)
• Interconnecting Cisco Network Devices (ICND)

Novell Certified Netware Administrator
• Novell Netware 5 Administration

CompTIA A+ certified
• A+ Core Service Technician, A+ DOS/Windows Service Technician


Insco/Dico Group – Irvine, CA 9/05 – Present
Network Supervisor – Supervise and monitor the network infrastructure supporting Active Directory, mail services, backup, branch offices, web hosting and firewall services. Responsible for daily user support issues, event log monitoring, mailbox administration, network print services, database support, tape backups, security, remote connectivity and server/client documentation. Supervise 2 network administrators, 1 operations employee. 100 users.

• 28 Windows 2003 servers using Active Directory
• Exchange 2003 server, OWA, SQL 2000/2005
• ISA Server 2006 firewall/caching server
• Watchguard firewall and SSL Firebox
• Symantec Backup Exec 12

Hartwell-Dzus– Placentia, CA 2/02 – 9/05
IT Manager – Rebuilt the entire network infrastructure to support Active Directory, mail, backup, terminal services, web hosting and firewall services. Moved all outsourced internet services in-house. Responsible for daily user support issues, event log monitoring, mailbox administration, network print services, database support, tape backups, security, remote connectivity and server/client documentation. Visual Basic skills used for MRP automation and conversion routines. 100 users.
• Windows 2000 server using Active Directory
• Exchange 2000 server and IIS 5.0 Outlook Web Access
• ISA Server 2000 firewall and web caching server
• Citrix Metaframe XP on Windows 2000 Terminal server
• Veritas Backup Exec for Windows 2000
• Visual Manufacturing version 6.2.8 on SQL Server 2000

PMI/Delta Dental – Cerritos, CA (Contract) 9/01 – 2/02
LAN Administrator –LAN/WAN administration and troubleshooting for 20 NT 4.0 servers and 8 Novell 4.11 servers using Zenworks 2.0. IBM AS/400 client connectivity. Desktop imaging and client support. Remote connectivity monitoring and troubleshooting. Goldmine HEAT used for CRM. Compaq Proliant servers with insight management system. 350 users.
• Domain account, file and printer security administration
• Exchange 5.5 mailbox administration, NDR troubleshooting
• Network cabling and routing
• Helpdesk, level I/II/III client and network support
• Server and tape backup systems documentation

Rainbow Computer Systems – Downey, CA (Contract) 3/01 – 9/01
Consultant – Bank systems server and desktop support. Administration of NT 4.0 and Novell 4.11 servers, network connectivity, tape backups, Internet and firewall configuration. Desktop client installations and troubleshooting. Hardware and software audits done for documenting infrastructure.
• Built Exchange 5.5 server with remote branch connectivity for Pacific Liberty Bank
• Software installations and updates for specialized banking applications such as ITI, OFAC
• Hardware installations of computers, printers, modems, network interface cards.

VERTEQ, Inc. - Santa Ana, CA 1/95 – 3/01
Systems Administrator – Implemented NT 4.0 domain with Exchange 5.5 server, Proxy 2.0 server, IIS web services and 4 Novell servers for file, print and SAA services. Responsible for network infrastructure, router and hub connectivity, storage devices and tape backups for all servers. Hardware platforms included Compaq ProLiant and HP Netserver. 350 users supported.
• NT/Novell file & print services administration
• Internet connectivity and firewall configuration
• Migrated organization from MsMail to Exchange 5.5
• Tape backups and disaster recovery
• Access database programming for production log
• Taught advanced class in use of Outlook 2000
• Phone system maintenance and voicemail administration

Digital Brothers - Costa Mesa, CA 7/92 – 10/94
Mastering Engineer - Mac based digital audio workstation used for mastering CD's from source material. Preparation of a client's source to a digital format for CD replication entailed "rolling on" the source to hard disk, creating digital fades to/from black, splicing, cross fade, level, EQ, etc. then "rolled off" to a one off CD, 1630 or DAT. Also responsible for maintenance and administration of the Novell 3.11 LAN used for customer billing and database.

Symantec/Peter Norton Group - Santa Monica, CA 2/92 – 6/92
Virus Signature Analyst - Worked in Norton AntiVirus Lab analyzing computer viruses and writing scripts for detection and repair. Required complete understanding of PC Boot routines, BIOS and DOS interrupts, TSR’s and program execution under DEBUG conditions. Completed release of Norton AntiVirus version 2.50.

Digital Brothers - Costa Mesa CA 10/89 – 2/92
Maintenance Technician - Provided equipment maintenance, troubleshooting and upgrades on servers/workstations, including component-level diagnoses and repair of digital audio equipment. Built LAN including design and procurement of all hardware and software for Novell 386 v3.11. System supervisor for the LAN. Firmware design for DAT CRC error checker using Intel’s 8051 micro controller, and implementing the use of a V25 micro controller for serial link.

Keyboard Technologies, Inc. - Van Nuys, CA 4/86 – 4/89
Programmer/Analyst - Developed software concepts for MIDI implementation in a prototype electronic keyboard with "real" acoustic grand action. Major responsibilities included creating synthesizer "sounds" utilized in demonstration of prototype keyboard. Completed projects include sound synthesis programming and demonstration of GZ1000 MIDI controller keyboard as well as debug of firmware used in production models.

Santo Guitars - Costa Mesa, CA 6/75 - 3/88
Guitar Repair - 11 years apprenticeship and 2 years as partners with guitar maker David Santo. Learned all aspects of guitar repair and building as well as store management skills.

Professional references available upon request