Leonard C Crabtree Email & Phone Number

Madison, Al, Us

Huntsville, Alabama, United States

Primary responsibility is handling and maintaining daily operation as the subject matter expert for the Fortigate firewalls, to include: responding to threat detections, analyzing network traffic to and from the environment. Evaluate IOS upgrade for, Fortigate firewalls and Fortimanger. Devised and plan the segmentation of the internal network across twenty sites geographical separated in the continental United States. Along with preforming network operations tasks as needed. Must complete troubleshooting, tasks thoroughly and accurately to prevent work stoppage and ensure timely resolution to any issue or project.Plan, engineer, and monitor security tools for the protection of the client’s network Recommend and make procedural changes to the network processes and firewall rule request process Review vulnerability scans, and work on remediations on the physical firewalls to include but not limited to IOS upgrades, system configurations account access etcAudit Fortigate firewall policies on a quarterly basis, for duplicate objects, unused or no longer needed policies.Maintain internal firewalls: Fortigate, and Fortimanger and its tools i.e. Security Fabric, Fortianlyzer, Logging,Monitor tickets, resolve technical issues and provide evidence of actions takenMaintain knowledge of various security applications, technologies and productsFollow and Adhere Change Management processes and procedures and to perform duties remotely and on siteCommunicate with the customers, management and team members verbally and written on solutions as it pertains to Firewall SecurityReview traffic logs and advice on solutions to deny or allow traffic through the networkWork with team members to review all firewall requests and determine the best way to implement changes without destroying security guidelinesUse of tools such as Splunk, Cisco ISE and DNA to monitor, deploy and maintain network equipmentMonitor network devices and traffic using Solorwinds

Huntsville, Alabama, United States

As Senior Consultant, Worked as team member in Cyber Security Operations, responsible for handling and maintaining daily operation of internal and external firewalls, responded to threat detections, analyzing network traffic to and from the environment. Evaluate IOS upgrade for Palo Alto Firewalls, Fortigate firewalls and Fortimanger. Devised and plan the segmentation of the internal network across twenty sites geographical separated in the continental United States. Some Responsibilities included:● Plan, engineer, and monitor security tools for the protection of the client’s network● Review vulnerability scans, and work on remediations on the physical firewalls to include but not limited to IOS upgrades, system configurations account access etc. ● Audit firewall policies on a quarterly basis, for duplicate objects, unused or no longer needed policies.● Briefing and precenting network changes and reports to business leadership for implementation of firewall rules● Work with team members on cyber security networking solution or improvements● Maintain network security tools to include Palo Alto, Fortigate, and Fortigates● Perform duties remotely and on sites as required to resolve issues, and upgrades the network● Maintain and monitor ticket, resolve technical issues and provide evidence of actions taken● Maintain knowledge of various security applications, technologies and products● Install, configure and maintain: Network security tools: firewall, and proxies● Follow and Adhere Change Management processes and procedures● Communicate with the customers, management and team members verbally and written on solutions and problems as it pertains to Firewall and security● Work with team members on solutions to all problems before it is escalated to management ● Review traffic logs and advice on solutions to deny or allow traffic through the network● Use remediation tools i.e. Nessus/Tenable to scan and remediate vulnerabilities

Huntsville, Alabama Area

Senior System Administrator on the U.S. Army project ATIS responsible for implementation, installation, and troubleshooting of prototype software. Evaluate software for customer environment to include: proper versions operating systems, software bundles, patches, and network setupAddress root causes in coordination with stake holders and troubleshooting, configuration, installations, and documentationImplement single sign on protection for the ATIS prototype on the customer site using Oracle Access ManagerProvide onsite and remote assists to the customer at and ensure that prototype is install/functioning properlyContinued development of software solutions answer any short falls that are found during the delivery and evaluation phaseInstall Oracle Operating (Linux) and Oracle products: SQLPLUS, Campus Solutions, ELM, Elastic Search, OAM Configuration of Linux Operating Systems i.e. Updates, opening/closing ports on the firewall, Installing and updating multiple software packages, configuring system files, writing scripts;Configure, deploy, test, authored installation instructions and maintain multiple Virtual Machines on the Gov Cloud (AWS) and customer environment i.e. Service Now, Ab Initio, Tableau, Windows servers, etcPerform fix/break actions and troubleshooting tasks on multiple virtual machines on AWS, and CustomersInstallation and configuration of Weblogic servers for multiple applications i.e PeopleSoft, OAM/OIMSet up of federation services with Oracle Access Manager (OAM) SSO (single Sign on) on Service Now, Tableau, AbInitio using SAMLv2 files, Setup x509 services in OAM for PKI and CAC logon supportInstallation of self-signed certificate authority, and deployed certification to all downstream serversInstallation and configuration for Oracle products to include Oracle Unified Directory (OUD) and install OUDSM, and Oracle HTTP server for with Oracle Weblogic Servers

Hurlburt

Mitigate all vulnerabilities 400 plus machines and perform patch management on assigned networks Perform day-to-day operations and maintenance on medium/large LANs and WANs for various student training environments Install implement, operate, and maintain Virtual platforms, VMware, VMWorkstation, VMplayerEnterprise VMWare Solutions (ESX, ESXI, vCenter, vMotion) Maintain several different hardware and software platforms to include ESXi (VMware), Virtual environments, Windows server 2012, 2008, 2003, Windows Clients XP, Vista, 7, 8, 8.1 and 10 and Linux Installation, Management, and Hardening of Cisco based Routers and Switches Maintain switch and router configuration for internal training networks Perform patch management utilizing SCCM (System Center Configuration Manager) Setup, administrate and maintain 1600+ virtual machines; Setup, administrate and maintain multiple VMware VCenter servers Setup and administrator Microsoft SCCM (System Center Configuration Manager) Implement Microsoft group policies and perform system administration to include file restores, building printer que’s, file permissions, servers builds, troubleshooting system issues, and DHCP, etc.Setup and administer Active Directory Domain (LDAP) and manage DNS services Responsible for back up and disaster recovery of information on assigned networks Setup and maintain SAN/NAS network appliances for storage and backup on multiple NetworksMaintain and setup Windows Deployment Services and update the deployment images Manage infrastructure projects and ensure that installations are completed on time Perform server build reviews and document/diagram server and power layouts Ensure physical infrastructure is installed correctly, maintained and diagramed/documented Build ground up networks with BlueCoat Proxies and PaloAlto firewall appliances for training purposesPerform classroom setup of systems and assist instructors and students with any systems related questions

Duke Field Florida

Assistant NCOIC/System / Network Administrator, Active AF Reserve, Duke Field, April 2007 to Present Maintain the TACLAN Windows Active directory networks including Exchange and file services in virtual environments Responsible for setting up all infrastructures (Cisco routers and Switches) and Window based clients Write and maintain SOPs (standard operating procedure) for the Windows server environment LAN setup Conduct training classes for fellow team members on building and maintain virtual environments, Microsoft servers, Cisco switches and routers and basic LAN setup Supervise team members on critical tasks in the CFTP i.e. Server builds, application deployment, server and switch management Setup and administer Active Directory Domain (LDAP) and manage DNS services for Deployment systemsComplete rating and rater system task for the Air Force airman to include, supervision, writing on reviews and ratings, and provide guidance As a TDC team member I was responsible for a team to: conduct training classes, building and maintain virtual environments, basic LAN setup, supervise team members on critical tasks in the CFTP : create server builds guides, application deployment, conduct server and switch management, setup and administer Active Directory Domain (LDAP) and manage DNS services for Deployment systems

Hurlburt Field Fl

Ensure Network Appliance (NETApp) storage devices are functioning correctly Use Remedy to document and resolve all discrepancies that may occur on the network Setup and Administer Active Directory Domain (LDAP) and manage DNS services Responsible for maintaining servers inside AFSOC server farm to include several different hardware types: Dell, HP, IBM, etc and software platforms: VMWare, Windows 2000, Windows 2003 Server, and XP Professional After hour’s system administrator support for AFSOC users of NIPR, SIPR, and SOCRATES Part of a team that completed system maintenance on AFSOC servers once a week i.e. software patching and hardware server maintenance Perform system administration on AFSOC server farm to include file restores, building print ques, setting file permissions, building servers Maintain Active Directory (LDAP) on three separate domains NIPR, SIPR, and SOCRATES Perform server build reviews and document/diagram out server and power layouts

As System Administrator was responsible to work Remedy trouble tickets, set up network devices and do routine patch maintenance. Work closely with A2 and A6 directorates to implement, troubleshoot and install various devices on SOCOMs JWICS networks (SOCRATES) and support predator operations. To include the following:Ensure Network Appliance (NETApp) storage devices are functioning correctly Use Remedy to document and resolve all discrepancies that may occur on the network Setup and Administer Active Directory Domain (LDAP) and manage DNS services Responsible for maintaining servers inside AFSOC server farm to include several different hardware types: Dell, HP, IBM, etc and software platforms: VMWare, Windows 2000, Windows 2003 Server, and XP Professional After hour’s system administrator support for AFSOC users of NIPR, SIPR, and SOCRATESPart of a team that completed system maintenance on AFSOC servers once a week i.e. software patching and hardware server maintenance Perform system administration on AFSOC server farm to include file restores, building print ques, setting file permissions, building servers Maintain Active Directory (LDAP) on three separate domains NIPR, SIPR, and SOCRATES Perform server build reviews and document/diagram out server and power layouts

Destin/Fort Walton Beach, Florida Area

As System Administrator was responsible to work Remedy trouble tickets, set up network devices and do routine patch maintenance. Work closely with A2 and A6 directorates to implement, troubleshoot and install various devices on SOCOMs JWICS networks (SOCRATES) and support predator operations. To include the following:Ensure Network Appliance (NETApp) storage devices are functioning correctly Use Remedy to document and resolve all discrepancies that may occur on the network Setup and Administer Active Directory Domain (LDAP) and manage DNS services Responsible for maintaining servers inside AFSOC server farm to include several different hardware types: Dell, HP, IBM, etc and software platforms: VMWare, Windows 2000, Windows 2003 Server, and XP Professional After hour’s system administrator support for AFSOC users of NIPR, SIPR, and SOCRATESPart of a team that completed system maintenance on AFSOC servers once a week i.e. software patching and hardware server maintenance Perform system administration on AFSOC server farm to include file restores, building print ques, setting file permissions, building servers Maintain Active Directory (LDAP) on three separate domains NIPR, SIPR, and SOCRATES Perform server build reviews and document/diagram out server and power layouts

United States

As the NCIOC of the Base Messaging Center (BMC) and functions system administrator (FSA) was to supervise team members inside the Network Operations Center supporting the telecommunications and infrastructure for voice, data and video teleconferencing for AFSOC. It was also the duty of the BMC to decimate messages from Autoden to all appropriate agencies and directorates on Hurlburt Field. As NCOIC of the BMC I was also placed in as the AFSOC Communications Lead for JEFX 2004. The efforts put forward in JEFX directly resulted in successful adoption and support of the AFSOC sponsored C2MM initiative by the Air Force Experimentation Office (AEFO) Some of my responsibilities in the BMC are as follows:Supervised personnel in the military Network Operations Center supporting the telecommunications infrastructure for voice, data, and video teleconferencing at the Command and Wing level Update/perform preventive maintenance on Core Automated Maintenance System (CAMS) profiles Help manage the base software licensing program for over 7200 users Equipment custodian responsible for 1.5 million dollars’ worth of computer and network components that covered different physical locations all over AFSOC and abroad Provided base level Helpdesk support answering calls and working with customers to resolve issues quickly Resolved technical issues with hardware, applications and connectivity for users’ base wide Maintain Active Directory (LDAP) on three separate domains NIPR, SIPR, and SOCRATES Perform server build reviews and document/diagram out server and power layouts Create disaster recovery plans and test out all plans on the BMC, from backups, implementing new Crypto on Circuits, and power failure recoveryResponsible for fulfilling all NCOIC duties to include, meetings, paperwork, evaluations of subordinates, making schedules for assigned personnel, and performing equipment management

United States

Active Duty Air Force: 16AMXS/AGS Assistant dedicated Crew Chief and Crew ChiefStart of Air Force career in aircraft maintenance as crew chief and was promoted to be Assistant dedicated Crew Chief (ACC) before retraining in to communications. Responsible for the launch and recovery of AC-130U model gunships. Some of the main duties where:Do initial inspections of the Aircraft after flight recoveryPost and pre-flight inspections of AircraftAircraft forms documentation and transcription before each flightPerform routine and non-routine maintenance on the airframes as neededPerform structural maintenance and rigging on the airframes and test all flight controlsComplete all servicing on the Aircraft, LOX, Gas, and Pneumatic systemsDo hot cargo (aircraft loaded with munitions) recovery

Bachelor'S Degree, Information Technology

Associate In Information Systems Tech, Military Information Systems Technology, Graduated

Associate In Arts, General Education, Graduated

Associate In Aircraft Maintenance Tech, Aircraft Maintenance Tech, Graduated

Associate In Industrial Management Tech, Industrial Management, Graduated

Gcih Certified, Gcih