Chennai, Tamil Nadu
Job Summary
Job Summary:
We are looking for an L2 Network Security Engineer with strong hands-on experience in Firewall technologies (Meraki, Palo Alto, Fortigate – any 2 mandatory) and operational exposure to Zscaler (ZIA/ZPA), Microsoft Defender for Office 365 (MDO), and WAF (Cloudflare).
The role focuses on BAU operations, ticket handling, troubleshooting, and change implementation in a 24×7 rotational shift environment.
Key Responsibilities
Key Responsibilities
Handle INC / SR / CR tickets within SLA
Execute firewall configuration changes (rules, NAT, VPN)
Troubleshoot network, Zscaler, email security, and WAF issues
Perform initial RCA and log analysis
Support Zscaler, MDO, and WAF operations
Escalate complex issues to L3/OEM
Maintain operational hygiene and documentation
Provide customer communication and updates
Skill Requirements
Required Skills:
Firewall (Any 2 Mandatory: Meraki / Palo Alto / Fortigate)
Hands-on experience in:
Security policies, NAT (SNAT/DNAT), ACLs
Zone-based firewall configuration
VPN knowledge:
IPSec / SSL VPN configuration & troubleshooting
Troubleshooting:
Connectivity issues (policy/NAT/routing)
Log analysis:
Traffic, threat, system logs
Exposure to:
Meraki Dashboard / Panorama / Forti Manager
Other Requirements
Zscaler (ZIA / ZPA)
ZIA:
URL filtering, web access policies
Traffic forwarding (PAC, GRE/IPsec)
ZPA:
Basic application access configuration
Client Connector troubleshooting
Basic understanding of SSO (Azure AD / SAML)
Troubleshooting:
User internet access and application access issues
MDO 365 (Email Security)
Anti-spam and anti-malware policies
Safe Links / Safe Attachments
Email trace and mail flow troubleshooting
Quarantine management
Handling phishing/spam issues
Basic awareness of SPF, DKIM, DMARC
WAF – Cloudflare
OWASP rule handling
IP blocking / Geo-blocking
Rate limiting
Basic DDoS handling
Troubleshooting false positives
Good to Have:
Basic networking (Routing & Switching)
SIEM exposure (Splunk / QRadar)
ITIL knowledge
Basic scripting / automation
Certifications
Palo Alto PCNSA
Fortinet NSE 1–4
Meraki (CMNA)
Microsoft SC-900 / MS-500
Zscaler ZCCA
✅ Soft Skills
Good communication skills (mandatory)
Customer-facing handling
Willingness for 24×7 rotational shift
Strong troubleshooting approach
Team collaboration
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