Arjun R's Location
Irving, Texas, United States, United States
About Arjun R
WS Certified 9+ years of experience as a Cloud Network Engineer/Network Security Engineer specializing in AWS cloud, GCP, Cisco devices, Network security, Firewalls and VPNs, Cisco Routers, LAN/WAN connectivity, TCP/IP Windows XP, Windows Vista, NT/2000 /2003 System administration.Enterprise experience and knowledge of CheckPoint, Cisco ASA, f5, PaloAlto and Bluecoat.Providing support for Checkpoint R77. 30 with GAiA and SPLAT.Experience in risk analysis, security policy, rules creation and modification of Check Point Firewall VPN-1 FW-1 NGX R65, R70 & R75 Provider-1/MDM/MDS. Experience with network security design implementation Assessment, evaluation, design, and implementation of solutions related to following security areas: Large corporate firewall extranets, mail, Internet, internal enclave, PCI, SOC and Industrial control systems.Experience with F5 LTM and GTM load balancer, Citrix Netscaler load balancer administration, management and upgrades to support 24x7 operationsMigration with both Checkpoint and Cisco ASA VPN experience.Knowledge of Intrusion Detection, DMZ, encryption, IPsec, proxy services, Site to Site VPN tunnels, MPLS/VPN, SSL/VPNExtensive experience in Layer 3 routing and Layer 2 switching and dealt with router configurations like 7200, 3800, 2800 and switches 6500, 4500, 3700, 3750, 3900, 2900, 2960 and 3500XL, 3950 switch series.Proficient with Cisco routing and switching products, UNIX, Linux, shell scripting and routing protocols. Experience in tools like SNMP, AAA, RADIUS and designed VPN with IPSEC security layer. Implementation of IPSEC & SSL tunnels in VPN using Cisco IOS and checkpoint firewall. Hands on experience using diagnosis tools like splunk, TCPDUMP, Wireshark, Snoop, FW Monitor for analyzing the real time statistics during the packet flow.Proficient in configuration of routing protocols like RIP, IGRP, EIGRP, OSPF and BGP.Involved in designing L2VPN services and encryption system and other VPN with IPSEC based services.Involved in troubleshooting of IP conflict problems and worked on Gigabit Ethernet and Fast Ethernet connection and applied QoS for the bandwidth delay.Extensive experience taking copy of Cisco IOS on TFTP server and loading it back on routers.Hands on experience in NAT configurations and it’s analysis on troubleshooting issues related access lists (ACL).Involved in monitoring network traffic and its diagnosis using performance tools like Snort, Snortsnarf, ping tools, and packet player.
Arjun R Work Experience Details
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Network Security EngineerU.S. Bank Aug 2023 - PresentMinneapolis, Mn, UsLed the successful migration from Cisco ASA to Palo Alto Networks firewalls, ensuring minimal downtime and seamless integration into the existing infrastructure.Conducted thorough troubleshooting of network security issues, resolving complex incidents related to firewall configurations and access control lists.Managed the upgrade process for Palo Alto firewalls, including pre-upgrade assessments, rollback strategies, and post-deployment validations to ensure optimal performance.Developed and executed deployment strategies for new security appliances, improving network resilience and reducing incident response times.Configured and optimized Zscaler proxy rules to enforce organization-wide security policies, ensuring appropriate content filtering and access controls based on user roles and requirements.Conducted regular reviews of Zscaler proxy rules and logs to identify potential security gaps and refine policies, enhancing overall network security posture.Performed regular security audits on network infrastructure, identifying vulnerabilities and ensuring compliance with industry standards and best practices.Collaborated with IT teams to implement dynamic whitelisting and blacklisting within Zscaler, ensuring that proxy rules adapt to changing business needs and threat landscapes.Configured and optimized site-to-site VPNs and remote access solutions on Palo Alto and ASA devices, enhancing secure connectivity for remote users.Monitored network traffic and security logs to detect anomalies, implementing automated alerts and response mechanisms for proactive threat management. -
Network Security EngineerMufg Jul 2022 - Jul 2023Chiyoda-Ku, Tokyo, JpLed the deployment of Blue Coat ProxySG solutions, optimizing web traffic management and enhancing user experience through improved bandwidth utilization.Provided expert-level troubleshooting for Blue Coat proxies, diagnosing and resolving issues related to SSL decryption, policy enforcement, and performance bottlenecks.Collaborated with teams to implement and manage proxy policies, ensuring effective content filtering and adherence to corporate security standards.Implemented notification systems via Power Automate to alert security teams of changes or updates to proxy rules, ensuring timely review and compliance with security policies.Delivered production support for Blue Coat environments, proactively monitoring system health and performance to minimize downtime and ensure optimal operation.Performed root cause analysis on web request incidents, providing actionable insights that led to the development of improved security policies and configurations.Facilitated cross-team collaboration by using Power Automate to trigger approval workflows for proxy rule changes, ensuring all modifications are vetted by relevant stakeholders.Developed and maintained whitelisting processes for approved websites and applications, reducing false positives and enhancing user productivity while maintaining compliance.Conducted regular audits and assessments of proxy configurations, identifying vulnerabilities and optimizing rules to safeguard against emerging threats.Created comprehensive documentation and training resources for operational staff, improving knowledge transfer and incident response capabilities across the team. -
Cloud Network EngineerBroadridge Aug 2019 - Jul 2022New York, New York, UsExperience configuring and supporting IPSEC based VPNs - capable devices such as Cisco ASA, Cisco ISR, Juniper JUNOS, Fortinet, Sonicwall, Checkpoint and Palo Alto.Experience with providing best design practices and architecting AWS VPN, Direct Connect, Elastic Load Balancers, VPC transit gateway.Troubleshoot on layer 1/2/3/4 and application layer (load balancers, TCP/IP, DNS, routing protocols such as BGP, OSPF etc.) to eliminate any performance bottlenecks in the network.Design solutions over multi-vendor (Cisco, Sonicwall, Palo Alto, Juniper etc.) network devices, routers, switches, firewalls.Implement highly available and redundant network topologies using IPSec VPN, and BGP.Experience in configuration & administration of software Load Balancers.Successfully architect, design and troubleshoot complex network designs, disaster recovery techniques to promote customer adoption and use of AWS services during the lift and shift operations.Worked on migrating close to 600 VM’s from customer on premise network to GCP GCVE (VMware engine) network, leveraging migration appliances and terraform to implement the foundations. Involved in development of strategy for migration effort which includes crucial architectural discussions with C-level executives.Involved in setup and deployment of IAM and organization policies for customer using terraform.Worked on designing and implementing BMS (Bare Metal Service) for customer on GCP. Designed Egress NAT setup from BMS and on premise HA VPN connectivity setup. Proficient in terraform deployments on google cloud. Assist customers with GCP Networking services such as Interconnect, Load Balancer, VPC, VPN , Cloud DNS etc.Experience configuring and supporting IPSEC based VPNs - capable devices such as Cisco ASA, Cisco ISR, Juniper JUNOS, Fortinet, Sonicwall, Checkpoint and Palo Alto to GCP.Highly experienced with terraform and prepare/edit scripts for automating customer setups. -
Network Security EngineerFreddie Mac Jun 2017 - Aug 2019Mclean, Va, UsDesigned and configured complex Check Point firewall environments in distributed deployment.Performed POC of Palo Alto’s proxy and firewall environment. Well acquainted with palo alto 7080 devices.Skilled in creating security Policy, App-ID, URL filter and Threat Prevention in Palo Alto firewalls.Worked on implemented Active/ Standby HA configuration on Palo Alto Firewalls.Performed upgrade for checkpoint gateways/MDS from R75.40 to R77.30 Checkpoint firewalls.Implementation of security profiles like Threat prevention and PAN-DB in security policies on Palo Alto firewalls. Assist with configuration of F5 LTM/GTM, well versed with load balancing methods and irule creation.Assist with firmware/hardware upgrade of Cisco ASA 5585.Rulebase analysis, rule deployment and risk analysis on checkpoint firewalls.Worked on checkpoint next-gen module such Application and URL filtering.Managed and optimized bluecoat proxy blocklist, proxy exceptions and authentication rules.Deployed and Managed Cisco FirePower 7000 series appliances.Configured and managed Palo Alto 7080 firewalls.Performed Audit on checkpoint, Bluecoat and F5 devices. Configured OSPF on checkpoint and Palo Alto firewalls. Managed workflow and SLA through TUFIN Secure change. Assisted with firmware/hardware upgrade of Cisco ASA. Performed network documentation and assisted with disaster recovery Site network security plan.Manage and optimize checkpoint firewall access list.Maintain a thorough understanding of Local Area Networking and WAN.Managing assigned projects to deliver services in accordance with established objectives.Responding to inquiries from staff, service providers and outside vendors to provide technical support.Troubleshooting issues using advanced techniques such as tcpdump, FW Monitor, Op Net packet capture. -
Network Security EngineerAmerican Express Apr 2016 - May 2017New York, Ny, UsHands-on experience on Checkpoint Firewall R77 Gaia, Palo Alto Pa-3000 and Cisco ASA 5520 firewalls. Security infrastructure engineering experience as well as a Microsoft Windows, UNIX, Checkpoint Firewalls, Palo Alto firewalls, PIX firewalls, Bluecoat Proxies and Juniper Intrusion Prevention devicesExperience on Check Point Firewalls R70, R75, R77 Gaia and VSX. Experience in creating multiple policies and pushing them in to Checkpoint Firewall (Gateways) and hands on experience in managing the Checkpoint Management Servers.Successfully installed Palo Alto PA 3060 firewalls to protect Data Center and provided L3 support for routers/switches/firewalls.Configure all Palo Alto Networks Firewall models (PA-2k, PA-3k, PA-5k etc.) as well as a centralized management system (Panorama) to manage large scale firewall deployments.Maintaining the Network Infrastructure, Installation, migration and configuration of large Enterprise Firewalls and Enterprise WAN. Configured Checkpoint Cluster XL, VRRP for redundant setups. Troubleshooting access issues by taking tcpdump and fw monitor captures on the device.Responsible for implementing, supporting, and maintaining 24x7 network services. Troubleshoot traffic passing managed firewalls via Splunk. Involved in pushing the firewalls as part of maintenance schedule. Extensive experience with VPN Concentrators, Firewalls, VPN end to end connectivity. Configured static NAT, dynamic NAT, dynamic NAT overloading. Experience with configuring Virtual Server and Configuring Load balancing methods in F5 LTM Worked extensively in Configuring, Monitoring and Troubleshooting Cisco's ASA 5500/PIX security appliance, Failover DMZ zoning & configuring VLANs/routing/NATing with the firewalls as per the design. Used firewall optimization tool Tufin to delete unused reports.Primary responsibility is to design and deploy various network security & High Availability products lick Cisco ASA other security products -
Network Security EngineerWilliams Jul 2015 - Apr 2016Tulsa, Oklahoma, UsImplementing security policies as per business requirement in Checkpoint R75, ASA, Juniper SRX and SSG firewalls.Managing Checkpoint management server for a complex Provider-1 Firewall environment.Involved in Configure, Troubleshoot and Maintenance of Juniper SSG and SRX Firewalls. Extensive Juniper Networks experience in Junos, ScreenOS, IVE (Pulse), NSM, and Junos Space. Created security policy according to user requirement in cisco ASA 5580, Juniper-SRX&SSG firewall using CLI & GUI. Deploy and maintain Juniper SRX 240 and SRX 3600 firewall for security and Internet accessibilityPerform firewall rule audits using Algosec optimization tool.Audit Security rules on various firewalls from Network Perspective and provide recommendations for more stringent approach.Assisted in the development of network and security communication standards and configuration management.Troubleshooting failover issues on Cisco ASA/Checkpoint/ SRX firewallsGood experience in creating ACL and NAT/PAT in the Firewalls.Advanced knowledge, design, installation, configuration, maintenance and administration of Checkpoint firewalls from R55 up to R77Handling Break/Fix situations, monitor, configure, policy creation on Checkpoint's Smart Center Server running on Secure Platform and IPSO.Configuring and troubleshooting Remote access (anyconnect) and site to site tunnel VPN on Cisco ASA FirewallPerform load balancing with advance policies for various applications using Citrix Netscaler.Migrating and converting security policies from Screen OS to Juniper SRX Junos.Configure and Monitor the alerts in Semantic Antivirus, Imperva Web application firewalls and IBM Qradar SIEM. -
Network EngineerBharti Airtel May 2013 - Jun 2015Gurgaon, Haryana, InConfigured various Cisco Routers & L2/L3 Switches and implementing OSPF and BGP on the routers.Configured EIGRP and OSPF as interior gateway protocol with route filtering and route redistribution, installed and maintained Cisco 3600, 2600 and 7200 backbone routes with HSRP.Implemented stub/Totally stub areas. Implemented various OSPF features like route-summarization and SPF throttling.Used DHCP to automatically assign reusable IP addresses to DHCP clients. Configured STP for switching loop prevention and VLANs for data and voice along with Configuring port security for users connecting to the switches.Performed network address assignment. Assign routing protocols and routing table configuration.Deployed and configured Cisco high end routers and switches (7613, 6509, 4800, 3600, 2900) and troubleshooting.Worked on IPv6, VRF, L2/L3VPN, GRE over IPsec, and GRE Tunnels on ATM links to client locations on Cisco 7200 routers as per client requirements. Implemented and configured ACLs, site-to-site IPsec tunnels over internet, based on encryption such as RSA authentication, AH and MD5. Worked on Cisco 1142/1252 Access Points, configured and troubleshot Cisco autonomous APs. Configured and troubleshot OSPF routing protocol features such as stub area, totally stubby area, NSSA, virtual link and MD5 authentication. Worked on network security design and implementation, firewall/DMZ configuration and operations and overall security monitoring.Managed rules on Cisco checkpoint NGX firewall.Worked with MPLS to improve quality of service (QoS) by defining LSPs that can meet specific service level agreements (SLAs) on traffic latency, jitter, packet loss and downtime. Worked with Load balancing device like F5 Big-IP local traffic manager (LTM) 1600. Implemented Hot Standby Router Protocol (HSRP) by tuning parameters like preemption.Installed, configured and set security policies on cisco and checkpoint firewalls, VPN.
Arjun R Education Details
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Osmania UniversityElectronics And Communications Engineering
Frequently Asked Questions about Arjun R
What company does Arjun R work for?
Arjun R works for U.s. Bank
What is Arjun R's role at the current company?
Arjun R's current role is Network Security Engineer at US Bank.
What schools did Arjun R attend?
Arjun R attended Osmania University.
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