Technical Support Network Security

SANTHOSH

******************@*****.*** 870-***-**** Santhosh V LinkedIn

Professional Summary:

Over 5 years of experience in networking, escalation support, network administration, Network security and system administration. Worked on medium to large-scale environments, campus and data center networks. Skilled in delivering technical support, Configuration and troubleshooting, managing network operations and maintaining enterprise-wide area networks across multi-platform and high uptime Data Centre environments.

Technical Skills:

Operating Systems: Windows, Linux, Unix, Mac OS.

Networking Technologies & Protocols: OSPF, EIGRP, BGP, IS-IS, RIP, Static Routing, ICMP, SNMP, OSI Model,TCP/IP, UDP, IPv4/IPv6, ARP, Subnetting, STP, RSTP, VTP, DTP, s, 802.1q, Ether Channel, AGP, PAGP, DHCP, DNS, NTP, HSRP, GLBP, VRRP,MSTP, SDN, SDWAN.

Network Management & Monitoring: Cisco ACI, Cisco DNA Center, SNMP, Wire-shark, Solar Winds, Infoblox, Cisco Works 2000, NOC Management.

Network Security & Authentication: VPN (IPsec, SSL), Cisco ISE, AAA (TACACS+ & RADIUS), SSH, MFA, SSO, Azure AD/Entra ID, and IAM.

Routing Protocols: OSPF, BGP, EIGRP, RIP, MPLS, IS-IS, Multi-casting /Spine leaf architecture.

Firewalls & Security Tools: PaloAlto NGFWs, Cisco ASA, Cisco Firepower, Checkpoint, Prisma Access,Global Protect VPN, Panorama, ACLs, NAT rules, Security policies, Splunk, (SIEM), Nessus (Vulnerability Scanner), Snort (IDS/IPS).

Routers & Switches: Cisco 2600, 2800,3600,3800,7200, and Cisco Meraki M250, M410,M225 and Juniper M & T Series, Cisco 3750/3550/3500/2960 switches and Cisco 3640/12000 /7200/3845/3600/2800 routers, Cisco Nexus7K/5K, Nexus 5k and 7k, NX-OS, Juniper EX4600, EX3400, EX4300, ACX1000.

Compliance & Security Frameworks: NIST 800-171, ISO 27001/27002, PCI DSS, GDPR, HIPAA, MITRE ATT&CK Framework, CIS Controls.

Load Balancer: F5 Networks (BIG-IP),LTM, GTM, Cisco CSM.

Features & Services: IOS and Features, HSRP, GLBP, IPAM IRDP, NAT, SNMP, SYSLOG, NTP, DHCP, CDP, DNS, TFTP and FTP Management, Open Stack, IVR’s, HLD and LLD documents, Dell equal logic.

Cloud & Virtualization Technologies: AWS, Azure, GCP, VSS, VDC, VPC, Zscaler Internet Access (ZIA), Zscaler Private Access (ZPA), Zscaler's Zero Trust Network Access (ZTNA).

APM Tools: Datadog, Traceview.

Programming Languages: Python, JavaScript, C, Perl, Power Shell, Bash, (IAC- Terraform, Ansible).

Simulation Tools: GNS3, VMware( Hyper-V, V Sphere, V Centre), OPNET IT GURU, OPNET Modeler, Cadence.

Identity & Access Management: Azure AD, OAuth, OIDC, OpenID, SAML, LDAP, MFA, SSO, RBAC, PAM, Identity Now, Okta.

Application and Proxy Servers: Tomcat, Web sphere, Web logic,Zscaler, Bluecoat.

Database: Oracle, My SQL.

Work Experience:

Client: Digit7 Feb 2024 - Present

Role: Network Engineer

Migrated firewalls from Cisco ASA to PaloAlto PA-5000 and PA-7000 series across campuses & data centers, and implemented NAT rules, ACLs, security policies, route tables, and user authentication.

Fortified enterprise network with PaloAlto NGFW, leveraging URL Filtering, App-ID, User-ID, and Content-ID for threat prevention, reducing security incidents.

Migrated existing on-premises identities to Azure AD and assigned appropriate IAM permissions and Documenting the network design using Microsoft Visio and GNS3.

Integrated PaloAlto with Panorama, resulting reduction in configuration time and enhanced security posture by implementing device groups, templates, Threat ID, and Wildfire.

Implemented fine load balancing and implemented Web Application firewall(WAF) policies using F5 load Balancer (BIG-IP).

Update networks by configuring routers, switches, and incorporate the SDWAN into the network design.Configured SDWAN router Viptela to connect remote sites over the Internet.

Deployed AWS networking services, including VPC peering, Site-to-Site VPN, Transit Gateway, and Route 53.

Maintained Infoblox operations, maintaining a DNS uptime and ensuring IPAM accuracy for a multi-site network, supported various number of devices.

Implemented Zero Trust Network Access (ZTNA) using Zscaler Private Access (ZPA) to provide secure, zero-trust access to internal applications, enhancing security for remote and on-premises users.

Enhanced cloud security by using Zscaler Cloud Protection for AWS workloads.

Managed the WAN/LAN network's IP Address Management. Optimized Cisco ASR and ISR routers with OSPF and BGP achieving a reduction in BGP route table size and faster network convergence through route summarization, filtering, and redistribution.

Deployed and managed Cisco Nexus & Catalyst switches in VMware and worked on Cisco Meraki devices and sensors supported environments, supporting over in data centers and Multiple devices across campuses.

Client: Southern Arkansas University. Sep 2022 – Dec 2023

Role: Graduate Assistant/Lab Assistant

Worked in the Computer lab to make sure all systems work properly that used by students on campus.

Updated all the software in labs using windows package management tool.Involved in Upgrading and installations of new devices on campus and new cabling systems in labs.

Worked with both MAC and Windows desktops in upgrading and Make sure all the connection are established.

Client: JMK Infosoft Solutions Ltd. Oct 2019 – July 2022

Role: Network Engineer

Involved in Local Area Network (LAN) design, troubleshooting, and maintenance as per company’s requirements.

Worked with sniffing tools like Wireshark to analyze the network problems.Maintenance and troubleshooting of network connectivity problems using PING, Trace Route.

Configured VLANS to isolate different branch and Troubleshoot VLAN, VLAN Trunking, HSRP fail over related issues.

Managed the WAN/LAN network's IP Address Management (IPAM), overseeing DHCP scopes, IP reservations, DNS host entries, pointers, delegations, zones, and DHCP failover. Maintained Infoblox operations .Got Exposure to tools such as CrowdStrike Falcon (EDR), Splunk (SIEM).

Network layer tasks included configuration of IP Addressing using FLSM, VLSM for all applications and servers.

Client: Adeptech Systems PVT ltd April 2018 – Sep 2019

Role: Network Engineer

Implemented and Troubleshoot the Routing protocols BGP, OSPF during the Migrations and new client connections.

Configured and troubleshoot Cisco routers (2800/3800 series) and switches (3750/3560 series) for LAN/WAN connectivity.

Configured and deployed a VoIP system for organization users, integrated SIP trunks and setting up call routing/QoS on Cisco routers. And Troubleshoot VoIP call quality issues by analyzing traffic flows by using Tools like Wireshark and optimizing QoS settings.https://www.livecareer.com/resume-search/r/windows-system-administrator-df3dc45f9b3a4286a0e97be744fca216https://www.hireitpeople.com/resume-database/76-network-admin-resumes/57803-sr-network-engineer-resume-profile-https://community.spiceworks.com/t/2019-server-dhcp-server-issues/947764https://community.cisco.com/t5/switching/dns-not-working-after-dhcp-server-config/td-p/2079132

Assisted in upgrading legacy Windows 2008/2012 servers to Windows 2019. and Provided Tier-2/3 support, troubleshooting network issues, connectivity problems, and system outages.

Diagnosed and resolved network connectivity issues related to TCP/IP and Analyzed network traffic using monitoring tools like Net Scout, Splunk.https://enhancv.com/resume-examples/voip-network-engineer/

Performed hands on administration and monitoring and troubleshooting of local area network (LAN) and wide area network (WAN) to optimize and performance and minimize the down time.

Used Active Directory to set up and maintain Microsoft Exchange server login credentials and email accounts.

Education:

Master’s from Southern Arkansas University - Dec 2023

Certifications

CCNA

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