David Bowman
Network Admin at The Ranger Group- Claim this Profile
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English -
Topline Score
Bio
Credentials
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CompTIA Project+
CompTIAFeb, 2021- Nov, 2024 -
CompTIA PenTest+
CompTIAApr, 2021- Nov, 2024 -
CompTIA A+
CompTIAMay, 2020- Nov, 2024 -
CompTIA Network+ ce
CompTIAFeb, 2013- Nov, 2024 -
CompTIA Security+ ce
CompTIAOct, 2012- Nov, 2024
Experience
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The Ranger Group
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United States
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Business Consulting and Services
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1 - 100 Employee
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Network Admin
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Jul 2022 - Present
Began my new work today! Looking forward to truly dig in and get to see what opportunities arise from this! Began my new work today! Looking forward to truly dig in and get to see what opportunities arise from this!
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Axiom Bank, N.A.
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United States
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Banking
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1 - 100 Employee
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Network Administrator
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Aug 2021 - Apr 2022
- Fully implemented 802.1x for all physical connections utilizing Aruba ClearPass Policy Manager and Cisco infrastructure utilizing a backbone switch stack configuration. - Researched and transitioned from a completely managed firewall solution to an in-house Cisco Firepower device, consolidating several disparate systems and improving response times to all issues which arose. Cut the average time to implement a new firewall rule from 10 days to 1. - Fully implemented 802.1x for all physical connections utilizing Aruba ClearPass Policy Manager and Cisco infrastructure utilizing a backbone switch stack configuration. - Researched and transitioned from a completely managed firewall solution to an in-house Cisco Firepower device, consolidating several disparate systems and improving response times to all issues which arose. Cut the average time to implement a new firewall rule from 10 days to 1.
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Gray Link Technologies, LLC
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United States
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IT Services and IT Consulting
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1 - 100 Employee
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Network Engineer
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Jan 2020 - Apr 2021
- Utilized system performance monitoring tools such as Riverbed Aternity to assist in root cause analysis of system and network bottlenecks. This included analyzing endpoint startup times, login times, along with disk, physical memory, and processor utilization. - Engineered a network performance testing solution utilizing a Cisco ISR with Red Hat Enterprise Linux and iPerf on a Cisco UCS module within the router, which took network bandwidth measurements via the use of automated scripting. - Responsible for initial receipt and inventory of hardware, racking of equipment and initial wiring, configuration of equipment, preparation for shipment and installation and integration with previously installed equipment that included engineering an automatic failover circuit within the Cisco switches, along with all documentation. Show less
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By Light Professional IT Services
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United States
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IT Services and IT Consulting
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400 - 500 Employee
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Information Assurance Specialist
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Sep 2019 - Dec 2019
- Responsible for creating educational curriculum for an immersive distance learning program, which included labs and written reviews. This curriculum was designed to teach the general knowledge required to be a Cybersecurity operator, utilizing software such as Kali Linux, Metasploit, Nmap, Nessus and scripting languages such as Python. - Communicated effectively through Slack, Microsoft Teams, and email to ensure timeline goals were met. - Responsible for creating educational curriculum for an immersive distance learning program, which included labs and written reviews. This curriculum was designed to teach the general knowledge required to be a Cybersecurity operator, utilizing software such as Kali Linux, Metasploit, Nmap, Nessus and scripting languages such as Python. - Communicated effectively through Slack, Microsoft Teams, and email to ensure timeline goals were met.
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Succeed to Lead, LLC
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United States
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Defense and Space Manufacturing
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1 - 100 Employee
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Instructor
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Nov 2018 - Jul 2019
- Facilitated classroom lessons and administer exercises to challenge individual’s reception of material, which included CompTIA Security+ and CompTIA Network+ - Developed teaching material that engaged participants and encouraged material retention, specifically through use of review questions and new hands-on exercises. - Facilitated classroom lessons and administer exercises to challenge individual’s reception of material, which included CompTIA Security+ and CompTIA Network+ - Developed teaching material that engaged participants and encouraged material retention, specifically through use of review questions and new hands-on exercises.
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US Army
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United States
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Armed Forces
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700 & Above Employee
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Instructor
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Jul 2016 - Dec 2018
- Created training curriculum, modules, and lessons providing comprehensive content for specialty systems used within the realm of COMSEC and Key Management Infrastructure for the US Government, such as the LCMS and KMI. - Designed working examples to measure class comprehension on exams and project assignments. - Facilitated classroom learning through use of exercises to measure retention of course material. - Created training curriculum, modules, and lessons providing comprehensive content for specialty systems used within the realm of COMSEC and Key Management Infrastructure for the US Government, such as the LCMS and KMI. - Designed working examples to measure class comprehension on exams and project assignments. - Facilitated classroom learning through use of exercises to measure retention of course material.
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US Army
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United States
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Armed Forces
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700 & Above Employee
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Network Operations Center Manager
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Apr 2015 - Sep 2015
Was responsible for managing a total of 10 contractor personnel who maintained the network infrastructure and Information Assurance systems. Worked with HBSS and ACAS to provide network security improvements which included removal of unauthorized devices from the network. Was also instrumental in the creation of initial training guidance for network use which resulted in zero unauthorized devices being plugged into network computers.
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Information Systems Monitoring
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Dec 2013 - Mar 2015
Was responsible for monitoring thousands of systems and connections and insuring a timely response when a system failed to respond or other issues occurred. In addition worked in a supervisory role over joint military personnel and DoD civilians ranging from GS10-GS13 positions.
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US Army
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United States
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Armed Forces
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700 & Above Employee
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SharePoint Administrator
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May 2012 - Sep 2013
My responsibilities included building custom layouts and web-parts for a total concept design. This design was intended to allow the flow of information from the lowest level individual in the company to the highest without having to constantly be filtered. My responsibilities included building custom layouts and web-parts for a total concept design. This design was intended to allow the flow of information from the lowest level individual in the company to the highest without having to constantly be filtered.
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US Army
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United States
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Armed Forces
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700 & Above Employee
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COMSEC Custodian
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May 2006 - Sep 2011
Provided the accounting of material, the shipping and handling of the material and its proper destruction. I was also responsible for insuring the right material was received by the customer in a timely manner even when the customer was hundreds of miles away.
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CPN Operator
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Oct 2004 - May 2006
Responsible for providing communications through the use a mobile platform that allowed for phones and internet.
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Network and System Administrator
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Oct 2001 - Oct 2004
Worked as a network and system administrator responsible for installation and maintenance of city wide communications and network systems which included thousands of server connections from various locations with a 99.8% up-time, while installing a non-tactical communications system for long term support.
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