G Siddharth

• Worked in Clients’ Global Deployment and operations team to support multiple migrations in switching, routing, firewalls, LB and Proxies. • Administration and Support of all Windows operating systems: 95,98, NT 2000, XP, 7, and Server 2003-2012- Active Dir. • Palo Alto design and installation (Application and URL filtering, SSL decryption, SSL Forward Proxy). Configured and maintained IPSEC and SSL VPNs on Palo Alto Firewalls. Successfully installed PA-5000 series firewalls in Data Center as perimeter Firewalls. • Migrated ASA firewalls to PA next-gen firewalls using PA's migration tool, transferring IPSEC tunnels, ACLs, NAT rules, and policies. • Enabled daily optimized operations through ITSM tools like Remedy, FireMon, and ServiceNow, managing problem tickets, change requests, and tasks for firewall production changes. • Installed, administered, and supported Microsoft Exchange Server 2007 and 2010, including database maintenance and mailbox recovery. • Executed emergency port rehomes for PE & GW routers involving T1/T3/OC-n and Metro Ethernet circuits. • Installed and configured wired and wireless LAN & WAN equipment. • Provided timely response for critical/high severity security incidents in Azure and GCP cloud systems, including rotational or on-call support. • Planned, configured, and installed multiplexers, video, and data infrastructure.

• Configured and administered Cisco and Juniper routers and switches. • Administered and diagnosed LAN and WAN, with expertise in TCP/IP, NAT, PPP, ISDN, and related network protocols and services. • Configured and troubleshot Cisco ASA firewalls. • Worked with Juniper J series J230, M320, MX960 routers, and EX3200 series switches. • Troubleshot hardware and network-related issues. • Configured Layer 2 and Layer 3 on Cisco Nexus 7K, 5K, 6509, 9710, 5596 UP, 4500, 3850, 3950, ASR, and 2960 switches. • Managed Cisco ASR9010, Ciena 5410, Ciena 3300 and 3500, Ciena 311v, Foundry Load Balancers, Cisco 7609, Nortel 3120, Sentry Server Tech power management, Cyclades network management, and Juniper EX4200.

• Assisted in network engineering efforts consistent with the infrastructure of an Internet Service Provider and support of such network services. Helped in designing and implementation of VLAN for the new users. • Installation and Configuration of various types of Personal Computers and Printers. Installation of different operating systems on Intel based PC's. • Troubleshooting of personal computers. Online Support to customers concerning their computer problems. • Replace branch hardware with new 2851 routers and 2960 switches. • Implemented WLAN Aruba Wireless Access Points and its Controllers at various corporate sites fort 11n. • infrastructure and its legacy technologies. • Provide SUN Solaris administration support to various SUN Vetra, SUN 450, and SUN Ultra Enterprise servers, including installing Solaris 2.7/2.8. • Experience in working with Cisco Nexus 5000 series switches for data Centre. • Responsibilities handled but not limited to Checkpoint Firewall, security systems, routers, switches, remote support, domain controllers, databases, exchange email servers and other LAN/WAN enterprises.

• Installation and maintenance of Cisco Layer 3 switches 3750, 4500X, 6500 in multi VLAN environment. • Maintenance and configuration of Cisco ASR1000 series and 7200VXR routers at data center and deployment of 3900, 3800, 2951 and 2821 for branch connectivity. • Involved in migration from Site-to-sire GRE tunnels network to MPLS-based VPN for customer’s WAN infrastructure. • Implementing security Solutions using Palo Alto PA-5000/3000, Cisco 5580/5540/5520. • Migration experience from Cisco ASA 5500 to PA. Experience with migration tool in PA for Policies from ASA to PA. Experience with SSL forward proxy and URL filtering. • Experience with RIVERBED Steelhead appliance for WAN optimization. • Configuring High Availability using Cluster XL on Checkpoint as well as VRRP and monitor the Sync status for tasteful replication of traffic between active and standby member. • Researched, designed, and replaced Checkpoint firewall architecture with new next generation Palo Alto PA3000 and PA5000 appliances serving as firewalls and URL and application inspection. • Configuring rules and Maintaining Palo Alto Firewalls & Analysis of firewall logs using Panorama. • Successfully installed Palo Alto PA-3000/PA-5000 firewalls to protect Data Center and provided L3 support for routers/switches/firewalls.

• Configuration, Troubleshooting and Maintenance of Palo Alto Firewalls (36+ firewalls) - PA200, PA2000 series, PA3000 series, PA4000 series and PA5000 series. • Successfully installed Palo Alto PA-5000, PA-3000 firewalls to protect Data Center and provided L3 support for routers/switches/firewalls and also configured and maintained IPSEC and SSL VPN's on Palo Alto firewalls. • Involved in redesign of traffic anomaly system to increase the detection method and algorithm efficiency. • Configured multiple VRFs on Arista 7504 and 7508 spine switches to routing and traffic flow. • Capturing data in the kernel stack and analyze the packets in various locations on the network stack • Deployed Arista test environment utilizing Arista UCN, Zero Touch Provisioning, MLAG and Vmware to simulate production • Configured and troubleshot Arista 7050, 7060, and 7280 series switches • Experienced in WAN environments, installing and troubleshooting data circuits (OC, T1, E1, T3, MUXES) • Understanding current vulnerabilities attacks and counter measures, assessing the impact of traffic on customer networks, conducting research on emerging security threats. • Designed and implemented migration plan from Cisco Nexus to Arista 7000 series Switches • Mentoring and training security analysts, creating and maintaining documentation for Traffic anomaly Sys. • Experience testing of a prototype Traffic Anomaly system that monitors TCP/IP network traffic.

• Designed the network infrastructure for 25 remote sites and central office considering the user requirements at each location. • Installed Cisco Catalyst 2960 Switches and Cisco ASA 5505 Firewalls at remote locations. • Performed the switching technology administration by configuring Cisco switches (Cisco catalyst 2960, CISCO SF300-24P and Cisco SG200-26P switches). • Maintained stable STP topology using Port fast, BPDU guard, root guard and UDLD. • Configured Virtual LANs (VLANs), VLAN Trunking, Inter VLAN routing, Port security, and LAN security on Cisco Switches. • Performed troubleshooting for VLAN misconfiguration and port security issues. • Deployed and maintained the network security infrastructure by Configuring Cisco ASA 5510 security appliance. • Configured Cisco 2960 routers as DHCP servers to distribute dynamic IP addresses. • Established Remote Access Virtual Private Network (VPN) between 25 remote site offices and the central office. • Created IKE Phase1 tunnel and IPsec tunnel between remote offices and central office for the encryption of data traffic

Managed control protocols for LAN/WAN infrastructure, ensuring efficient network operations. • Configured and maintained DNS, IP, Firewall, VPN, and server settings for diverse customer networks. • Troubleshot and addressed security issues related to Cisco ASA firewalls. • Configured, maintained, and resolved issues with Cisco 2800 series routers. • Implemented policy-based routing for BGP in complex network systems.