
Over 5+ years of experience in designing, monitoring, and configuring large enterprise networks, with strong hands-on expertise in Cisco ASA, Palo Alto, and Fortinet firewalls. Designed and configured site-to-site VPNs on Cisco ASA and Palo Alto firewalls. Implemented policies on Palo Alto (3020/5020) for security, QoS, Policy-Based Forwarding (PBF), decryption, application override, DoS, and zone protection. Modified policies on Cisco ASA, Palo Alto, and Fortinet to enhance security, QoS, and memory optimization. Designed MPLS and DMVPN solutions to provide redundancy for remote sites, and delivered network infrastructure designs for Data Center LAN, WAN, and Wireless environments. Collaborated with network architecture teams for server connectivity, security testing, and ensuring server-to-network compatibility. Expertise in routing protocols such as OSPF, EIGRP, BGP, Policy-Based Routing (PBR), and static routing. Configured and troubleshot Cisco routers (7600, 7200, 3800, ISR, ASR series) and switches (3750 stackable switches using Cisco StackWise technology). Hands-on experience with Layer 2 and Layer 3 technologies, including VLANs, VTP, STP, RPVST+, EtherChannels, and inter-VLAN routing. Strong knowledge of TACACS+, RADIUS, and integration with firewalls for authentication and access control. Extensive experience with Intrusion Detection and Prevention Systems (IDS/IPS), and analyzing logs using tools like NetScout, Nagios, Splunk, SolarWinds, and HP NNMi. Proficient in troubleshooting network traffic using packet capture tools on Cisco ASA, and Palo Alto Firewalls. Extensive knowledge of WAN technologies, including MPLS, DMVPN, and IPSEC VPNs, as well as configuring WAN protocols such as PPP, PAP, and SNMP. Implemented HSRP and VRRP for network redundancy, and ensured high availability across networks. Expertise in multi-layer switching and transparent bridging for enhanced network performance. Managed and deployed large-scale network migrations and infrastructure upgrades, meeting budget and deadlines. Created comprehensive run books and design documentation, including templates for LAN/WAN, data center, wireless, and security. Proficient in documenting network designs using Microsoft Visio. Experienced in network monitoring and troubleshooting using tools like Wireshark, SolarWinds, and Splunk. Integrated Active Directory, Exchange Mail Servers, and managed NAT, FTP, and Terminal Servers. Skilled in maintaining device inventories and configurations using SSH, Syslog, SNMP, NTP, TFTP, and FTP. Strong knowledge of TCP/IP, IPv4, UDP, Ethernet, and voice/data integration techniques, along with expertise in network upgrades on Cisco IOS platforms, ensuring secure and optimized data flow.