L3 Network Security & Firewall

Teamwin Global Technologica; Bengaluru; On-site; INR 1,800,000 - 2,400,000; Full time

Job summary

Teamwin Global Technologica in Bengaluru is seeking an experienced L3 Network Security & Firewall professional to manage Fortinet FortiGate and FortiManager across multiple sites. You will handle VPN deployments (IPsec/SSL), firewall policies, NAT, and security monitoring, while supporting vulnerability remediation and audits.

The role emphasizes hands-on administration, incident handling, and collaboration with auditors and vendors.

Qualifications

• 8+ years of Network Security and Infrastructure experience.
• Hands-on FortiGate administration and FortiManager usage.
• Experience supporting enterprise audits and compliance requirements.
• Strong vulnerability management and remediation exposure.
• Excellent documentation and stakeholder coordination.

Responsibilities

• Manage, configure, and troubleshoot FortiGate Firewalls across locations.
• Administer FortiManager for centralized policy management and device administration.
• Configure VPNs: IPsec Site-to-Site and SSL/Remote Access; manage certificates.
• Maintain NAT, VLANs, routing, and security policies; enable HA and firmware upgrades.
• Monitor security events, analyze alerts, and coordinate incident response.
• Support vulnerability remediation, patching, and audit evidence.
• Prepare audit artifacts and assist in ISO/SOC/ITGC reviews.

Skills

Network security

Security operations

Incident handling

Vulnerability management

Audit support

Documentation

Communication

Tools

FortiGate

FortiManager

IPsec VPN

SSL VPN

NAT Configuration

HA

Job description

Job Summary

We are seeking an experienced L3 Network Security & Firewall with strong expertise in Fortinet Security Solutions, Enterprise Network Infrastructure, Security Operations, Vulnerability Management. The ideal candidate should possess hands-on experience managing FortiGate firewalls, FortiManager, VPN technologies, enterprise switching environments, security monitoring, audit support, and vulnerability remediation activities.

Key Responsibilities

Network Security Administration

• Manage, configure, and troubleshoot FortiGate Firewalls across multiple locations.
• Administer and maintain FortiManager for centralized policy management and device administration.
• Perform firewall policy creation, modification, optimization, and periodic rule reviews.
• Configure and support:
• IPsec Site-to-Site VPN
• SSL VPN / Remote Access VPN
• Certificate-based VPN Authentication
• Manage NAT, VLANs, Routing, Security Policies, IPS, Application Control, and Web Filtering.
• Implement network segmentation and access control policies.
• Perform firewall firmware upgrades and security hardening.

Network Infrastructure Management

• Configure and troubleshoot:
• Layer 2 & Layer 3 Switches
• VLANs and Trunking
• STP, RSTP
• Static and Dynamic Routing
• LAN/WAN Connectivity
• Maintain network availability and performance.
• Troubleshoot network outages and connectivity issues.

Fortinet Security Administration

• FortiGate deployment and onboarding.
• FortiManager centralized administration.
• Global Policy Package management and installation.
• Device template management.
• Security profile management.
• VPN lifecycle management.
• Configuration backup and restore.
• HA implementation and troubleshooting.

Security Operations

• Monitor firewall and security events.
• Analyze logs and security alerts.
• Investigate:
• Unauthorized access attempts
• Malware communication
• Port scanning activities
• VPN-related issues
• Security policy violations
• Coordinate incident response activities with internal teams and vendors.

Vulnerability Management

• Review and analyze VAPT reports.
• Perform remediation tracking and closure validation.
• Coordinate firmware upgrades and security patching activities.
• Maintain vulnerability closure evidence.
• Manage asset inventory based on VAPT findings.
• Conduct configuration hardening as per security best practices.

Audit & Compliance

• Support on:
• ISO 2701 Audits
• SOC Audits
• ITGC Audits
• Internal Security Reviews
• Customer Security Audits
• Prepare and maintain audit evidence.
• Track audit observations and remediation activities.
• Participate in risk assessments and compliance reviews.
• Ensure adherence to change management processes.

Documentation & Reporting

• Maintain:
• Network Diagrams
• Asset Inventory
• SOP Documents
• Change Records
• Audit Evidence
• Security Reports
• Technical Documentation
• Generate periodic operational and compliance reports.

Required Technical Skills

Firewall & Security

• Fortinet FortiGate
• FortiManager
• Firewall Policies
• NAT Configuration
• IPS/IDS
• Application Control
• Web Filtering
• Security Profiles
• High Availability (HA)

VPN Technologies

• IPsec VPN
• SSL VPN
• Remote Access VPN
• Site-to-Site VPN
• Certificate-Based Authentication
• Multi-Factor Authentication (MFA)

Networking

• Switching
• VLAN
• Trunking
• STP/RSTP
• TCP/IP
• DNS
• DHCP
• Routing
• WAN Technologies
• Network Troubleshooting

Security Operations

• Log Analysis
• Security Monitoring
• Incident Handling
• Risk Assessment
• Access Reviews
• Change Management

Vulnerability & Compliance

• VAPT Analysis
• Vulnerability Remediation
• Patch Management
• Firmware Upgrades
• ISO 2701
• SOC Audit Support
• ITGC Controls
• Audit Evidence Preparation

Preferred Certifications

Fortinet

• FCP Network Security
• FCA
• FCF
• NSE Certifications

Networking

• CCNA
• CCNP Enterprise
• CCNP Security

Required Experience

• 8+ years of Network Security and Infrastructure experience.
• 5+ years of hands-on FortiGate administration.
• Experience with FortiManager centralized management.
• Hands-on experience with IPsec VPN and SSL VPN deployments.
• Experience supporting enterprise audits and compliance requirements.
• Strong exposure to vulnerability management and remediation activities.
• Experience in incident response and security operations.

Soft Skills

• Strong analytical and troubleshooting skills.
• Excellent communication and documentation skills.
• Ability to work with auditors, vendors, and internal stakeholders.
• Ownership-driven and proactive approach.
• Strong attention to detail in audit and compliance activities.

Role:

Role: L3 Network Security & Firewall
Department: Network Security & Information Security
Experience: 8-12 Years
Location: Bengaluru
CTC: As per company standards and experience.