Varun Kumar Email & Phone Number

Sunnyvale, California, United States

• Utilized proxy server caching to reduce bandwidth usage and accelerate content delivery by serving cached content to clients.
• Skilled in day-to-day operations, including system monitoring, performance optimization, and troubleshooting to minimize downtime.
• Segmented LANs and WANs into distinct zones or segments using VLANs or virtual routing instances, implementing security measures to control traffic flow and restrict unauthorized access.
• Utilized Cisco ACI’s built-in tools and third-party integrations for real-time monitoring, performance analysis, and troubleshooting of network issues.
• Executed the migration process, including the translation of Cisco ACLs to Palo Alto security policies, ensuring minimal disruption to ongoing network operations.
• Configured and fine-tuned Palo Alto security policies, leveraging advanced features such as App-ID, User-ID, and Threat Prevention for network operation.

San Jose, California, United States

• Created and maintained detailed documentation, including network diagrams, standard operating procedures (SOPs), and configuring records.
• Effective communicator, capable of collaborating with cross-functional teams, vendors, and stakeholders to gather requirements and address operational needs.
• Conducted troubleshooting and resolved connectivity challenges associated with VPNs, DHCP, DNS, and Firewall DMZ configurations.
• Implemented INFOBLOX APIs and automation scripts to streamline network, DNS record updates, and IP address management tasks, reducing manual effort and errors.
• Managed and fine-tuned intrusion detection and prevention systems (IDS/IPS) to proactively detect and block malicious activities.
• Experienced in configuring and managing Palo Alto Networks firewall models, including PAN-PA-7000-DPC-A, PA-5450, and PAN-PA-5400-DPC-A Series.

New York, New York, United States

• Experienced in working with Palo Alto PA-7k, 5k, 3k series firewall.
• Researched, designed, and replaced aging Checkpoint firewall architecture with new next generation Palo Alto appliances serving as firewalls and URL and Application inspection.
• Configuration, deployment and Administration of Checkpoint, Palo Alto Firewalls to manage large scale firewall deployments.
• Experienced in creating multiple policies and pushing them in to Checkpoint Firewall (Gateways) and hands on experience in managing the Checkpoint Management Server.
• Experienced on Check Point Firewalls NG, NGX R65, R70, R75, R77, NSX (VMware Network).
• Configuration and Troubleshooting on site-to-site VPN and Remote VPN on Cisco ASA 5540 security systems.

Indianapolis, Indiana, United States

• Implemented and configured of ASA 5520 in failover along with the CSC module as per the customer requirement.
• Integrated Checkpoint Security Gateway, Gaia R77.20 with LDAP/Active Directory for identity awareness, user authentication and track activities.
• Configured troubleshoot and manage HA (cluser) and IPSec, SSL, VPN checkpoint for network security and redundancy.
• Configuring Nexus 2000 Fabric Extender FEX which acts as a remote line card module for the Nexus 5000.
• Working on Cisco ACI, NxOS and IOS, other SDN products Tiered Domains, QoS, data center network design, cloud infrastructure design and management, OSPF, BGP, VLAN Trunking
• Involved in Configuration of various Cisco Routers & L2/L3 Switches and implementing OSPF and BGP on the routers.

India

• Responsible for implementation and maintenance of router configuration of CISCO routers and switches between the NOC and other entities.
• Participated in load balancer deployments, ensuring proper configuration and load distribution.
• Developed and managed load balancer solutions, such as F5 Load Balancers, to ensure high availability and scalability of critical applications.
• Led the deployment of SD-WAN Viptela technology across multiple sites, enabling seamless connectivity and centralized management.
• Deployed Arista network equipment's like 7508, 7304 spine switches 7280, VXLAN, LAN. Worked with VM segmentation (VMware NSX, Illumio, vArmour, GuardiCore), Firewall management and auditing (Firemon, Tufin, AlgoSec.
• Performed maintenance and troubleshooting of connectivity problems using PING, and Trace route.