Tejasvi T Email & Phone Number

United States

California, United States

• Configured, and Maintained Firewalls policies on Palo Alto firewalls like Security, NAT, QoS, policy-based forwarding, Tunnel Inspection, Application override, authentication, and DOS protection.• Configured objects and developed custom applications and services to manage traffic effectively on the firewall.• Established IPsec tunnels on Palo Alto Firewalls to facilitate secure Site-To-Site connectivity.• Configured Active/Passive HA links between Palo Alto firewalls.• Hands on experience in Firewall Configuration, logging, reporting, and User-ID redistribution using Panorama.• Managed licenses, software (PAN-OS) and content updates (Application, wildfire, and Antivirus) using Panorama M-500.• Configured SSL-Forward Proxy and SSL-Inbound inspection on Palo Alto Firewalls.• Enabled the User-ID feature while creating policies based on users and groups rather than individual IP addresses.• Held responsibility for configuring Palo Alto to mitigate DOS, DDOS, and Data leak attacks using Dos Protection, Threat Prevention, and Data Filtering measures.• Configured Zones, Virtual routers, and interfaces on Palo Alto Firewalls.• Configured route-based VPN to connect Palo Alto firewalls located at two branch offices.• Designed and implemented complex firewall rule sets to protect the network from threats and unauthorized access while facilitating legitimate traffic.• Responsible for configuring and troubleshooting Routing Protocols (OSPF, BGP) and redistribution between the Routing Protocols.• Worked on BGP configuration for providing redundant internet connectivity using Prefix Lists, Route Maps and BGP Attributes.• Provided L2 & L3 network support, Building configurations for Juniper EX 3300 and EX 4200 switches with features like port security, VLANS, VTP, and PVST+.• Expertise in Zscaler, cloud-based security platform that provides secure access to applications and data from any device and location.

Florida, United States

• Established High Availability links between Checkpoint firewalls in an Active/Passive configuration to ensure network resilience and eliminate single points of failure.• Effectively administered IPS (Intrusion Prevention System), monitoring, Anti-Spam features, Smart Provisioning, and DLP (Data Loss Prevention) using Checkpoint Firewalls.• Implemented dynamic routing protocols, such as OSPF and BGP, on Check Point firewalls to optimize network routing and resilience.• Implemented Check Point Sand Blast Zero Day Protection for the detection and prevention of novel, unidentified malware presents in email attachments, URLs, and downloaded files.• Implemented high availability and failover solutions, including Active/Standby and Active/Active configurations for Cisco ASA firewalls.• Conducted firewall performance optimization, fine-tuning configurations to maximize throughput and minimize latency.• Upgraded an ASA firepower module managed through the Adaptive Security Device Manager (ASDM).• Implemented site-to-site VPNs on Cisco ASA firewalls for secure communication between network locations.• Deployed F5 gateways for SSL, remote access load balancing, and template creation, optimizing secure access and load balancing solutions.• Experience with creating VIP (virtual IP), pools, nodes for the virtual servers and redirection of the URLin the F5 Big-IP. • Expertly configured advanced functionalities including iRules, SSL Offloading, Persistence, SNATs, and Digital Certificates on F5 BIG-IP LTM.• Key contributions include troubleshooting of complex LAN/WAN infrastructure that include routing protocols EIGRP, OSPF and BGP.

• Configured security policies using NAT, PAT, and ACLs on firewalls.• Configured various NAT techniques (static NAT, dynamic NAT, inside Global Address Overloading, Overlapping Address Transition, TCP overload distribution).• Deployed a SYSLOG server to allow proactive network monitoring.• Worked on Meraki switches (MS 210, MS 225, MS 250).• Configured MPLS Multicast VPN and QoS.• Took on the responsibility for the maintenance and efficient utilization of VLANs, Spanning-Tree protocols, HSRP (Hot Standby Router Protocol), and VTP (VLAN Trunking Protocol) within the multi-layer switched backbone, including Catalyst switches.• Installed and configured OSPF with a multi-area design in core routers (72xx series). Designed OSPF areas for reliable access distribution and core IP routing.• Implemented BGP configuration to establish redundant internet connectivity, leveraging BGP attributes, route maps, and prefix-lists for optimal route control.• Configured redundancy protocols like HSRP and VRRP.• Configured the security infrastructure of local area networks (LAN) and wide area networks (WAN).• Worked with HPE Aruba Switches (3810- MLS and 2500 series switches).• Configured BPDU GUARD, port-fast, uplink fast, and other spanning tree features in switches.• Involved in creating, configuring, and administering VLANs, VTP, Spanning Tree, Ether Channel, Inter-VLAN Routing, LAN security, and port security.• Designed and implemented VLANs and spanning tree protocols (PVST, MSTP) to avoid network loops.• Created private VLANs, prevented VLAN hopping attacks, and mitigated spoofing with snooping and IP source guard.

India

• Managed and configured Wide Area Networking Protocols such as HDLC and PPP.• Configured Routing Protocols like EIGRP and OSPF.• Involved in configuring HSRP, VRRP, GLBP, PAP, and CHAP.• Engaged in HSRP, VRRP, GLBP configuration and troubleshooting, as well as Port channel management of the network.• Gained knowledge of layer2 switching tasks which advocate VLAN, VTP, STP, RSTP, PVST, RPVST, configuring of ether channel with LACP and PAGP along with troubleshooting of inter-VLAN routing.• Handled NAT configuration and troubleshooting issues related to access lists and DNS/DHCP within the LAN network.• Switching-related tasks included implementing VLANs, Ether channel, and configuring ISL trunk on Fast Ethernet channels between switches.• Configuration encompassed VTP, STP port features, and enterprise security utilizing Cisco Port Security.• Involved in configuring and managing various Layer 2 switching tasks, including address learning and efficient switching.• Addressed escalation problems from Level 1, Level 2, and Level 3 for routing, switching, and WAN connectivity issues using the JIRA stories.• Analysed, configured, and effectively troubleshooted LAN/WAN networks, actively monitoring network traffic and access logs to identify and resolve network access issues promptly.

India

• Implemented & Integrated Cisco switches, routers.• Participated in basic network device configuration, including setting up IP addresses, subnet masks, and default gateways.• Gained a basic understanding of network security principles, including password policies and user access control.• Applied knowledge of IPv4 subnetting and IP management practices to efficiently allocate and manage IP resources.• Gained experience in configuring EIGRP (Enhanced Interior Gateway Routing Protocol) protocols on Cisco routers to enhance routing efficiency.• Gained foundational knowledge of routing protocols such as OSPF and EIGRP, enabling effective network routing and optimization.• Assisted in Network configurations, encompassing VLANs, Trunking, VTP, and EtherChannel deployments.• Actively Involved in created and managed VLANs, implemented port security measures, configured Trunking, managed STP, executed INTER-VLAN routing, and bolstered LAN security.• Offered essential first-level technical support to end-users, addressing their technical concerns and issues.• Implemented and maintained VPN solutions for secure remote access, ensuring data privacy and compliance.• Dealt with the escalation problems from Level1, Level 2 & Level 3 for routing, switching and WAN connectivity issues using ticketing system Remedy.• Assisted in monitoring network performance using simple tools to ensure network uptime and reliability.