11/02/2026 updated
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Network Security Engineer | Palo Alto Firewalls | Zscaler | SSE / ZTNA
Jabalpur, India
Only remote
Master of Computer Applications (MCA)About me
L2/L3 Network Security Engineer with 8+ years of enterprise experience. Specialist in Palo Alto Firewalls, Zscaler, SSE/ZTNA, Cisco Meraki, and Infoblox DDI. Proven track record in handling P1/P2 incidents, change management, and SLA compliance. Available for immediate remote support.
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Palo Alto Firewalls & Network Security
Expertise in Palo Alto firewall policy administration, including security rules, NAT settings, access controls, firewall alerts, security log review, and DNS-layer threat protection. Configuration of security policies through the GUI to support enterprise traffic requirements.
Zscaler Secure Access (SSE / ZTNA / SWG / FWaaS)
Hands-on experience with Zscaler-related secure access operations, SSE and ZTNA workflows, Secure Web Gateway (SWG), and Firewall-as-a-Service (FWaaS). Troubleshooting of access-policy outcomes, URL symptoms, DNS resolution, proxy configuration, and private application connectivity.
Network & Connectivity (LAN/WAN/WLAN, Routing & Switching)
Strong foundation in TCP/IP, LAN/WAN/WLAN, VLANs, STP/RSTP, BGP, EIGRP, OSPF, static routing, DNS, DHCP, and IPAM. Troubleshooting of connectivity and routing issues across Cisco Catalyst/Nexus and Meraki environments, including Layer 2/Layer 3 faults.
Firewall & Security Operations
Security policy administration, NAT, access control, traffic validation, DNS-layer protection, security event monitoring, policy troubleshooting, and approved change implementation.
Infrastructure & Tools
Proficiency with Cisco Catalyst/Nexus, Cisco Meraki, Infoblox DDI, F5 BIG-IP LTM, VMware NSX, OpsRamp, Checkmk, Power BI, and ServiceNow for network management and operational reporting.
Infoblox IPAM & Core Network Services
Administration of Infoblox IPAM including IP reservations, scope management, enterprise VLAN provisioning, and user access-related requests.
F5 BIG-IP LTM
Support of F5 BIG-IP LTM availability by managing virtual IPs, pools, nodes, profiles, and health checks for application traffic.
Service Operations & Incident Management
Management of P1/P2 incidents within defined SLAs, escalation coordination, outage restoration, RCA support, change requests, maintenance windows, shift handovers, and operational documentation using ServiceNow.
Enterprise Browser Security & Private Access
Investigation of private access and enterprise browser security issues by validating user access, application reachability, and relevant security settings.
Expertise in Palo Alto firewall policy administration, including security rules, NAT settings, access controls, firewall alerts, security log review, and DNS-layer threat protection. Configuration of security policies through the GUI to support enterprise traffic requirements.
Zscaler Secure Access (SSE / ZTNA / SWG / FWaaS)
Hands-on experience with Zscaler-related secure access operations, SSE and ZTNA workflows, Secure Web Gateway (SWG), and Firewall-as-a-Service (FWaaS). Troubleshooting of access-policy outcomes, URL symptoms, DNS resolution, proxy configuration, and private application connectivity.
Network & Connectivity (LAN/WAN/WLAN, Routing & Switching)
Strong foundation in TCP/IP, LAN/WAN/WLAN, VLANs, STP/RSTP, BGP, EIGRP, OSPF, static routing, DNS, DHCP, and IPAM. Troubleshooting of connectivity and routing issues across Cisco Catalyst/Nexus and Meraki environments, including Layer 2/Layer 3 faults.
Firewall & Security Operations
Security policy administration, NAT, access control, traffic validation, DNS-layer protection, security event monitoring, policy troubleshooting, and approved change implementation.
Infrastructure & Tools
Proficiency with Cisco Catalyst/Nexus, Cisco Meraki, Infoblox DDI, F5 BIG-IP LTM, VMware NSX, OpsRamp, Checkmk, Power BI, and ServiceNow for network management and operational reporting.
Infoblox IPAM & Core Network Services
Administration of Infoblox IPAM including IP reservations, scope management, enterprise VLAN provisioning, and user access-related requests.
F5 BIG-IP LTM
Support of F5 BIG-IP LTM availability by managing virtual IPs, pools, nodes, profiles, and health checks for application traffic.
Service Operations & Incident Management
Management of P1/P2 incidents within defined SLAs, escalation coordination, outage restoration, RCA support, change requests, maintenance windows, shift handovers, and operational documentation using ServiceNow.
Enterprise Browser Security & Private Access
Investigation of private access and enterprise browser security issues by validating user access, application reachability, and relevant security settings.
Experience
Professional experience5 - 10 years
Freelancer since2026
Languages
EnglishFluentHindiNative speaker
Project history
Supported 24x7 enterprise network operations across multi-site LAN, WAN, and WLAN environments using OpsRamp and Checkmk. Managed P1/P2 incidents within SLAs, troubleshot routing issues across Cisco Catalyst/Nexus and Meraki environments, configured Palo Alto firewall security policies, reviewed firewall alerts and security logs, restored WAN connectivity during outages, administered Infoblox IPAM, supported F5 BIG-IP LTM, performed firmware upgrades and security patching, managed ServiceNow change requests, and prepared Power BI reports for incident trends and SLA compliance.
Supported enterprise network security operations covering firewall management, secure internet access, and private application connectivity. Assisted with Palo Alto firewall policy administration, supported Zscaler-related secure access operations, SSE and ZTNA workflows, troubleshot SWG and FWaaS access issues, assisted with private access and enterprise browser security investigations, monitored firewall and network security logs, troubleshot LAN/WAN issues, collected diagnostic details for incident investigation, coordinated with network and identity support teams, and maintained incident records and shift handover details.