Senior Network Security Analyst

What Drives Success

• Location: Richardson, TX (This position is 100% onsite at our headquarters in Richardson, TX, requiring attendance in-office 5 days a week, Monday-Friday)
• The Network Security Analyst position will act as a first-level escalation point for concerns involving firewall access requests, network troubleshooting, and VPN issues.
• This role is a full-time employment opportunity. Some weekend and/or after-hours work may be required to assist high severity security issues.
• The analyst will be responsible for initial response to incidents involving client VPN and troubleshooting firewall issues.

ESSENTIAL DUTIES AND RESPONSIBILITIES

• Design and implement approved firewall change requests in accordance with established guidelines.
• Perform operational checks of the firewalls to ensure optimal operation.
• Conduct periodic review of firewall policies to identify and remove any unused, duplicate, or expired objects and/or rules through change management.
• Assist IT teams in troubleshooting network connectivity issues involving systems, applications, and services.
• Attend meetings related to KT& troubleshooting issues, roadmap & project discussions and change control meetings.
• Initiate the RMA of faulty firewall equipment.
• Work closely with the security engineering team to implement security enhancements and/or mitigate identified security gaps.
• Assist with firewall updates, and operating system upgrades.
• Assist with troubleshooting client VPN connectivity issues.
• Preparing escalations for the engineering team when determined a higher-level issue exist or break fix is required.

COMPETENCIES

• Good understanding of malware (computer viruses, worms, spyware, ransomware, etc.) and associated risk mitigation techniques.
• Strong understanding of next generation firewall technologies; Palo Alto experience required.
• 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.
• Understanding threat mitigation profiles and configuration in next generation firewalls.
• Strong intrusion detection / prevention system (IDS/IPS) knowledge.
• Ability to interpret and understand firewall traffic and threat logs.
• Ability to troubleshoot network connectivity and application problems.
• Strong understanding of computer network routing and switching fundamentals.

Familiarity of Windows Server 2008/2012/2019 and Windows 11

• Familiarity of the Linux operating system.
• Familiarity of current threats and trends in Cyber Security
• Basic understanding of cyber security frameworks (e.g., NIST, zero trust)
• Familiarity with industry data security, privacy, and regulatory standards.
• Preferred ability to lift 25lbs

What We Are Looking For

QUALIFICATIONS

• To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.
• 5 Years of relevant experience with 2-3 years of experience managing and configuring Palo Alto NextGen Firewalls.
• 3 years of experience working with Windows operating systems
• One or more of the following certifications is preferred: (ISC)2 SSCP, CompTIA Security+, Palo Alto PCNSA/PCNSE, SANS GSEC, or Cisco CCNP Security.
• 1-2 years of experience using ssh connectivity tools such as Putty
• Associates degree in related field or equivalent experience required.
• Excellent communication skills, both written and verbal required.
• Some experience working in environments that have Change Control processes
• Self-starter and able to work with minimal supervision.
• Ability to work individually and as part of a team.
• Ability to be flexible and work after business hours to support IT changes or troubleshoot issues
• Ability to work in the office 5 days a week
• Willingness to learn new technologies and platforms in the IT Security space

Who We Are

Lennox (NYSE: LII) Driven by 130 years of legacy, HVAC and refrigeration success, Lennox provides our residential and commercial customers with industry-leading climate-control solutions. At Lennox, we win as a team, aiming for excellence and delivering innovative, sustainable products and services. Our culture guides us and creates a workplace where all employees feel heard and welcomed. Lennox is a global community that values each team member’s contributions and offers a supportive environment for career development. Come, stay, and grow with us.