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Lennox

Network Security Analyst

Company logo
Lennox
Designs, manufactures and markets HVAC and refrigeration solutions for residential and commercial use.
First-level network security analyst handling firewalls, VPN, and incident response.
1d ago
$75,000 - $100,000
Junior (1-3 years)
Full Time
Richardson, TX
Office Full-Time
Company Size
14,200 Employees
Service Specialisms
Emergency Replacement
Plan & Spec
Design & Build
Planned Replacement
National Account Services
Structural & Architectural Solutions
Equipment Recycling
Sector Specialisms
Residential Heating and Cooling
Commercial Heating and Cooling
Refrigeration
Building Climate Solutions
Home Comfort Solutions
HVACR Technology
Energy Management Systems
Indoor Air Quality Solutions
Role
What you would be doing
network troubleshooting
security enhancements
firewall review
firewall updates
vpn troubleshooting
change implementation
  • Troubleshoot network connectivity issues involving systems, applications, and services.
  • Work closely with the security engineering team to implement security enhancements and/or mitigate identified security gaps.
  • Conduct periodic review of firewall policies to identify and remove any unused, duplicate, or expired objects and/or rules through change management.
  • Assist with firewall updates, and operating system upgrades.
  • Initiate the RMA of faulty firewall equipment.
  • Perform operational checks of the firewalls to ensure optimal operation.
  • Assist with troubleshooting client VPN connectivity issues.
  • Design and implement approved firewall change requests in accordance with established guidelines.
What you bring
ids/ips
nextgen firewalls
palo alto
security+
windows server
nist
  • Strong intrusion detection / prevention system (IDS/IPS) knowledge.
  • Ability to troubleshoot network connectivity and application problems.
  • Strong understanding of the uses and associated cyber security risks of well-known network ports and protocols such as SSL, HTTP, DNS, SMTP, FTP, SSH, IPsec, etc.
  • 2 to 3 years of experience administering enterprise class NextGen firewalls.
  • Familiarity of Windows Server 2008/2012/2019 and Windows 10
  • Ability to interpret and understand firewall traffic and threat logs.
  • Associates degree in related field or equivalent experience required.
  • Strong understanding of next generation firewall technologies; Palo Alto experience preferred.
  • One or more of the following certifications is preferred: (ISC)2 SSCP, CompTIA Security+, Palo Alto PCNSA/PCNSE, SANS GSEC, or Cisco CCNP Security.
  • Basic understanding of malware (computer viruses, worms, spyware, ransomware, etc.) and associated risk mitigation techniques.
  • 1 to 3 years of experience working with Windows and Linux systems.
  • Familiarity of current threats and trends in Cyber Security.
  • Strong understanding of computer network routing and switching fundamentals.
  • Familiarity of the Linux operating system.
  • Basic understanding of cyber security frameworks (e.g., NIST, zero trust).
  • Understanding of threat mitigation profiles and configuration in next generation firewalls.
Benefits
Information not given or found
Training + Development
Information not given or found
Interview process
Information not given or found
Visa Sponsorship
Information not given or found
Security clearance
Information not given or found
Company
Overview
1895 Founding
Historical Beginnings
The company was established in 1895 by inventor Dave Lennox, revolutionizing furnace designs.
S&P 500 Listed
Financial Milestone
The company is publicly traded and ranks among S&P 500 firms following a financial resurgence.
3 Locations
Manufacturing Hubs
The company operates major manufacturing facilities across three key regions.
  • Over decades it expanded from furnaces into air conditioning, refrigeration and advanced climate‑control systems.
  • It serves both homeowners seeking quiet, efficient comfort and businesses needing robust, serviceable commercial systems.
  • Flagship projects include award‑winning heat pumps, smart thermostats and large-scale HVAC retrofits for schools, hospitals and big‑box retailers.
  • Unusual trivia: in the 1960s the firm briefly built a small crawler tractor and lawn mower called the 'Kitty Track 600'.
Culture + Values
  • Integrity
  • Respect
  • Excellence
  • Accountability: We deliver on our commitments.
  • Positive Engagement: We energize and motivate others.
  • Trust: We are always honest, ethical, and safe.
  • Customer Experience: We earn the loyalty of our customers.
  • Sustainability: We care for our community and planet.
  • Talent: We foster belonging and create opportunities to grow.
  • Innovation: We embrace original ideas and creative solutions.
  • Quality: We strive for continuous improvements.
  • Results: We prioritize superior outcomes for our shareholders.
Environment + Sustainability
13th
Sustainability Leader
Ranked among Barron's 100 Most Sustainable Companies, showcasing commitment to environmental and social responsibility.
1%
Community Investment
DONATES up to 1% of net income to health, education, and environment causes, reflecting dedication to social responsibility.
  • Offers paid volunteer time off for community and environmental non‑profits.
  • Developed low–global‑warming‑potential HVAC products (Home & Building Climate Solutions segments).
  • ENERGY STAR Most Efficient products (Lennox Ultimate Comfort System™).
  • ‘Smart Heating and Cooling Product of the Year’ at 2024 IoT Breakthrough Awards.
  • Named Best‑Managed Company by WSJ citing sustainable product delivery, community initiatives, efficient operations Dec 19 2024.
  • Net‑zero target date: **not publicly disclosed** on official site.
Inclusion & Diversity
Three Years
Consecutive Certification
The company has been Great Place to Work–certified for three consecutive years, highlighting its commitment to fostering an inclusive workplace culture.
2024 Rank
Top Workplace Recognition
Recognized in the U.S. News & World Report Best Companies to Work For 2024 list, showcasing its inclusive and empowering workplace culture.
  • Fosters an open, inclusive culture where people from all backgrounds feel welcome and valued.
  • Inclusive recruiting practices and development programs supporting equity.
  • Employee Resource Groups and cultural ambassador networks offer year-round learning, connection, and growth opportunities.
  • No public gender-based workforce statistics disclosed.
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