Overview
Work History
Education
Skills
Certification
Timeline
Generic

Ossie Yelder

Atlanta,GA

Overview

21
21
years of professional experience
1
1
Certification

Work History

Network Security Engineer

Cencora/CDW
06.2024 - 12.2024
  • Analyzed system logs from various sources, including routers, switches, servers, and applications, to identify suspicious activities or patterns in Palo Alto Panorama Firewalls.
  • Developed security policies and procedures for network infrastructure to ensure organizational compliance.
  • Monitored network traffic using packet sniffing tools like Wireshark to detect malicious activity.
  • · Configured and maintained firewalls, intrusion detection systems, and virtual private networks.
  • · Palo Alto, Panorama, Firewall Rule Implementation, Policy Optimization, extensive troubleshooting, Wireshark, packet captures, Splunk.
  • Implemented firewall configurations starting with baseline settings and advancing to more complex configurations, including security policies, VPN setups, and traffic monitoring. Integrated the firewalls into Panorama's Device Groups and Templates for centralized, streamlined management across the network.

Network Engineer

ENAVATE
09.2020 - 06.2024
  • Conducted network vulnerability scans and remediation efforts to mitigate risks and ensure compliance with security policies.
  • Implemented and managed VPN solutions with Cisco ASA, Meraki, and Palo Alto Firewalls.
  • Managed and configured various firewall solutions, including Palo Alto Prisma, Cisco ASA, Firepower, Meraki, Azure NGF, and Watchguard.
  • Performed seamless transitions of network infrastructure from Cisco to Palo Alto NGFW.
  • Orchestrated cloud migrations from Virtual Private Cloud to Azure.
  • Analyzed security vulnerabilities of devices with Qualys, creating tailored reports for departmental use.

Network Security Engineer

Change Healthcare/Wipro
08.2019 - 08.2020
  • Maintained and optimized firewall security protocols across Palo Alto, Checkpoint, Meraki, Cisco ASA, and Firepower firewalls.
  • Built, implemented, and troubleshot VPN issues using Cisco ASA, Meraki, Checkpoint, and Palo Alto Firewalls.
  • Monitored network security using SolarWinds to ensure system integrity.
  • Orchestrated the migration process from Checkpoint to Palo Alto firewalls.
  • Managed Palo Alto Wildfire for IDS/IPS detection, isolating potential malware, bots, and viruses from network infections.

Network Security Engineer

Delta Airlines/ TCS
07.2018 - 08.2019
  • Analyzed system logs from various sources including routers, switches, servers, and applications to identify suspicious activities or patterns.
  • Developed RFC procedures for firewall rule and policy changes during maintenance windows.
  • Monitored firewall traffic and implemented rule modifications for Palo Alto and Checkpoint.
  • Implemented and troubleshot VPN site-to-site connections on Cisco ASA and Palo Alto Firewall.
  • Produced and presented technical design documents and drawings to senior management and application teams.
  • Managed network incident resolution through proficient use of ServiceNow.
  • Participated in CAB calls to review and approve network changes.
  • Engaged in Network Bridges to troubleshoot and resolve outage issues.

Network Engineer

Envision
04.2017 - 06.2018
  • Oversaw LAN/WAN connectivity management between client hospitals and clinics.
  • Diagnosed and fixed traffic problems on Cisco ASA, Dell SonicWall, and Palo Alto firewalls.
  • Managed HL7/Mirth VPN connections from clients to our data center host for the secure transfer of medical records.
  • Utilized WAF (Poliwall) for network security, including whitelisting, blacklisting, and real-time monitoring.
  • Managed Email and Network Access: Handled troubleshooting, user account management, and access control for all company applications.
  • Performed email and network access administration: oversaw connectivity issues, user accounts, and access permissions for business applications.

Network Engineer

AT&T
10.2003 - 04.2017
  • Handled ISP Connectivity Management: Administered the LAN/WAN network for enterprise subscribers through MPLS and VPN solutions.
  • Oversaw Cisco ASA and Palo Alto Firewall Management: Handled the configuration, monitoring, and maintenance of Cisco ASA and Palo Alto firewalls to safeguard network infrastructure.
  • Network Maintenance and Provisioning: Managed alarm management platforms, conducted chronic analysis, performed isolation and triage, and provided remote network access.

Education

Bachelor of Science -

ITT Technical Institute
Knoxville, TN
01-1995

Skills

  • Firewall configuration and security
  • Vulnerability assessment
  • Cloud security
  • Security information and event management
  • Security awareness training
  • Network device monitoring
  • Connectivity troubleshooting

Certification

  • · Azure Fundamentals (AZ-900)
  • · Azure Security Engineer Associate (AZ-500)
  • · CCNA (Cisco Certified Network Associate)
  • · CompTIA Security +
  • · Palo Alto Certified Network Security Administrator (PCNSA)
  • · Palo Alto Certified Network Security Engineer (PCNSE)

Timeline

Network Security Engineer

Cencora/CDW
06.2024 - 12.2024

Network Engineer

ENAVATE
09.2020 - 06.2024

Network Security Engineer

Change Healthcare/Wipro
08.2019 - 08.2020

Network Security Engineer

Delta Airlines/ TCS
07.2018 - 08.2019

Network Engineer

Envision
04.2017 - 06.2018

Network Engineer

AT&T
10.2003 - 04.2017

Bachelor of Science -

ITT Technical Institute

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Ossie Yelder