Network Administrator

4 weeks ago

India Tata Consultancy Services Full time

TCS has been a great pioneer in feeding the fire of Young techies like you. We are global leaders in the technology arena and there's nothing that can stop us from growing together. TCS Hiring for skill "Administrator/ Forescout". Role: Network Administrator Required Technical Skill Set: Forescout Administration Experience: 5-8 years Work Location: Kolkata, Kochi, Bangalore or Hyderabad. Must-Have: 1. L2/L3 Experience with complex, larger scale network endpoint secure connectivity and access control that spans both wired and wireless access control through Forescout. 2. Experience with 802.1X/NAC, DHCP, HTTPS, TCP, Netscout, Radius, etc. and access control policy development and management and device remediation 3. Experience with IOT and BYOD device access policy controls 4. Very good communication skill. 5. Flexible in 24*7 client support Good-to-Have: 1. Additional certification in any network technology (CCNA, CCNP) 2. Experience in automation, AI/ML technologies Responsibility of / Expectations from the Role: - Designing, configuring, and troubleshooting CounterAct. - Switch Plug-in Optimization (wired) - Align endpoint, L2, L3 association with same CounterACT appliance and Configure Connectivity Group - Re-valuate and re-configure polling Intervals for L2 and L3 switches and routers after configuring connectivity groups. - Validate and fix L2(MAC)/L3(ARP) Polling to ensure L3 devices are polled for ARP table, L2 devices only for MAC tables. - Wireless Plug-in Configuration - Add any Wireless Controllers to the plugin - Align Wireless controllers with CounterACT appliance for polling - Classification Policy - Classification Sub-Rules creation and clean up based upon: - Device type (Vendor, Model, OS etc.) - NIC - MAC - Authentication (MAB, dot1X etc.) - Operation Technology (OT/iOT) - NAT - Windows - Mobile Devices - Macintosh - Printers - VOIP - Headset (HaloLens, Meta Quest etc.) - Camera - Network Devices - Linux/Unix/AIX - Unclassified - Clarification Policy creation - OT/iOT Clarification Policy - Unclassified Clarification Policy - Validate comments in sub-rules - Remove initial implementation troubleshooting sub-rules (Port 22 open, netbios/DNS name, etc.) - Review and restructure Network Device Clarification Policy - Control Policy Optimization: - Create catch all buckets/sub-rules in each control policy. - Review and modify Exemption sub-rules in control policies. - Add secondary blocking action of Virtual Firewall, i.e., via Channels ingesting Network Tap traffic. - Review and re-configure recheck setting of control policy sub-rules based on Classification, Clarification and Discovery policy optimizations. - Operating System Changes: Policy to detect if a device changes OS fingerprint from one OS to another such as Windows to non-windows. - Windows Version Changed on a managed device. - VPN Plug-in Configuration: Configure VPN plugin to help identify and validate devices connecting via VPN. Note: Applications will be shortlisted based upon response received & Eligibility criteria.

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