Jan 2018 – Dec 2025 · 7 yrs 11 mos · Bengaluru, Karnataka, India · On-site

• Administrating Cisco ASA, FMC, FTD, Palo Alto Firewall, Panorama, AWS, Citrix NetScaler Load Balancer, and Cisco ISE.
• Configuring and troubleshooting Site-Site VPN tunnels and cisco AnyConnect profiles and policies.
• Configuring Guest portal in ISE as per Mylan requirement and troubleshooting.
• Migrating Cisco ACS 5.2 to ISE 2.6 for Radius and TACACS configuration.
• Taking ownership for P1 and P2 issues.
• Resolving Problem Tickets as per ITIL Process.
• Performing critical upgrades and Bug fixes for Firewalls.
• Implementation of Citrix ADC NetScaler Load Balancer for both DMZ and Internal load balancing.
• Configuring SSL VPN gateway on Citrix ADC NetScaler for accessing internal applications securely.
• Configuring Security Groups, NACLS, and Site-to-Site VPNS on AWS cloud.
• Migrated Site-to-Site VPN from Cisco ASA to Palo Alto Firewall.
• Migrated Cisco ASA Firewall from Version 8.2 to 9.1
• Migrated Cisco ASA to Palo Alto Next-Gen Firewall.
• Migrated Cisco AnyConnect to Palo Alto Global Protect VPN.
• Implemented Remote Access VPN [Global Protect] across the Globe.
• Escalated emergency technical issues beyond the scope to maintain optimum up-time.
• Performed troubleshooting for Palo Alto, Cisco and packet analysis.

Aug 2016 – Jan 2018 · 1 yr 5 mos · Bengaluru, Karnataka, India

• Troubleshooting and resolution of incidents, working to critical SLA’s
• Remote support for on-site engineers and end users/customers during installation;
• Joining Bridge calls to solve the issue with the customer
• Planning the changes before implementation
• Working with Cisco ASA 5510, 5515
• AAA authentication using ACS Server to access the Network by only authenticated users.
• Implementing security by using VPN, Port Security, VLAN, Dot1x authentication and ACL’s
• Maintaining accurate logs via ticketing system
• Dealing with monitoring network Monitoring Tool like CA Spectrum
• Configuring access-lists, by using ASA-5510 & creating IPSEC VPN Tunnel connection for a secure and private network
• Raising vendor fault tickets, managing the replacement and return of failed devices with hardware suppliers in accordance with SLA; Utilizing escalations matrices where required.
• Using Packet Capture tools (Wireshark, TCP Dump, and built-in sniffer tools on devices) to analyze the packets to identify problems in the network infrastructure and in-depth.
• Test and evaluate new software versions of systems on hand and maintain the latest version according to business needs and to best serve customers

Jan 2013 – Aug 2016 · 3 yrs 7 mos · Bangalore

• Configuring & Maintaining Cisco Routers Switches.
• Working on Cisco ASA and Checkpoint Firewalls.
• Upgrading Cisco Routers, Switches using TFTP Server.
• Monitoring and troubleshooting the entire network.
• Troubleshooting on site to site VPN.
• Conducting daily meeting and attending conference call.
• Implementing Ether Channel between core switches.
• Writing ACLs for traffic filtering.
• Configure and implement Layer 2/3 functionality for relevant devices.
• Provide Level-2/3 support and troubleshooting to resolve issues.
• Working with Trunking, STP, VTP, Port Security.
• Support onsite software/hardware installations, upgrades and Maintenance activities.
• Join and participate in Major Incident conference calls.
• Performed switching technology administration including VLANs, inter-VLAN routing, Trunking, port aggregation.
• Ensure proper updates are made to site documentation as well as topology maps as changes are made to the network.