Chris Hallman

Cybersecurity | Cloud | API | Networking | L4-7 | WAF | DDoS | Solution Architect

Atlanta, Georgia, United States

About

Thank you for viewing my profile. I am a highly skilled solutions architect with a background in systems, networking and cybersecurity. I am passionately focused on delivering value to customers. I don't sell products/software/services. I provide solutions. Best solution, best of breed and yes, best price. Assisting them with filtering through the background noise tossed at them from SO many vendors. To me, it's not a job; it's a challenge; it's a puzzle and most importantly, it's fun. I've had the privilege and opportunity of working on many complicated projects and with many talented individuals/teams. I consult with customers to help them quantify their needs for cybersecurity, infrastructure, and business continuity. That includes listening and gathering their requirements, documenting options that provide the best solution while being in tune with their budgetary constraints and becoming a partner to their continued success. ♦ 802.11a/b/g/n/ac; 802.1x (ISE); 802.1q; 802.1p/QoS/DSCP/ToS; x.509(SSL/TLS)‬ ♦ FR, DS1/DS3, OC-x, VPN, 10/40/100GE‬ ♦ Routing: RIP, IGRP, EIGRP, OSPF, OSPFv3, BGP‬ ♦ Optical carrier equipment: CWDM, DWDM‬ ♦ ADC/SLB highly available application delivery‬ ♦ GSLB multi-site business continuity‬ ♦ CGN: NAT44/NAT444, NAT64/DNS64, DS-Lite‬ ♦ WAF application protection‬ ♦ DAF DNS server protection‬ ♦ DDoS attack mitigation‬ ♦ Firewall/ACL, UTM, ATP, APT, NGFW, IPS, DLP, sandboxing, web filtering, transparent/explicit proxy, deception‬ ♦ Packet capture & protocol analysis‬ ♦ Network management protocols and applications: Cacti, LibreNMS, Check-Mk, NetFlow, MECM, Spectrum, Wazuh, Nagios,‬ Cacti, & SNMP‬ ♦ Microsoft Windows servers, applications and databases‬ ♦ Linux servers; BIND DNS; web servers (Apache, Lighttpd, NGINX); email servers (not Exchange); MariaDB/MySQL‬ ♦ Vendors: A10, Arista, Brocade, Cisco, F5, Forescout, Gigamon, HP, Juniper, PaloAlto, Radware, Vyatta‬ ♦ KVM, ProxMox & VMware hypervisors for building virtual network devices and Windows/Linux virtual machines in a lab to‬test and practice with network device configurations‬ ♦ Utilized a combination of Bash, CRON and Python for the creation of a OO multi-threaded device configuration deployment, a recurring WAN backup validation test, API log scraping for Wazuh and data extraction for a 95th% capacity‬ planning reports.

Experience

  • Chief Technology Officer at Mysterion
    Feb 2026 - Present · 6 mos

    Content Provenance & Authenticity

  • Senior Network Engineer at Ascension
    May 2025 - Present · 1 yr 3 mos

  • Senior Network Engineer at Automated Systems Design, Inc.
    Oct 2024 - Apr 2025 · 7 mos

    Support customer projects, firewall migrations and upgrades and WAN upgrades. Design and deployed new internal office infrastructure utilizing Proxmox, EIP DHCP/DNS, Fortigate and Ruckus wired/wireless.

  • Principle Architect at B.E.S.T. Consulting BestTechIT
    Apr 2022 - Oct 2024 · 2 yrs 7 mos

    Joined a startup focused on agility, customer service and the best I/T management services for networks, systems, storage, applications, web sites, x.509, IPAM, Netflow, MECM and SIEM. We use our decades of experience to solve customer problems. Tested, designed and deployed the virtualization platform for all customer VM’s utilizing Proxmox virtualization and backup with a dedicated storage network with iSCSI to an all flash storage array. This provides our customers the best user experience while allowing us to onboard a customer’s VM’s in hours or less. Established best practices. Tested multiple software packages for service delivery. Continued to test and modify our platform to improve our ability to provide resilient, reliable services. Created isolated customer silos for deployed virtual machines and set security policies to block all cross pollination. Installed, configured, deployed and maintained open source email server with self-updating x.509, DKIM, DMARC, MTA-STS and SPF. Installed, configured, deployed and maintained systems management to monitor MSSP platform performance. Installed, configured, deployed and maintained customer open source network monitoring. Installed, configured, deployed and maintained customer IPAM. Installed, configured, deployed and maintained customer systems/application/web/x.509 monitoring. Installed, configured, deployed and maintained secure customer file server. Installed, configured, deployed and maintained customer open source Wazuh SIEM. Created custom customer reports for network/application performance.

  • Senior Solutions Architect at Cequence Security
    Sep 2021 - Apr 2022 · 8 mos

    Cequence is the only API Security Platform vendor that unifies runtime API visibility, security risk monitoring, and patented behavioral fingerprinting technology to consistently detect and protect against ever evolving online attacks without the development and deployment friction associated with alternative offerings.