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Network Administrator

Network Administrator

Tata Consultancy ServicesGreater Hyderabad Area, India
1 day ago
Job description

Role : Network Administrator

Required Technical Skill Set : Forescout Administration

Experience : 5 to 8 years

Location : Kolkata, Kochi, Bangalore or Hyderabad.

Job Description : Must Have : -

  • L2 / L3 Experience with complex, larger scale network endpoint secure connectivity and access control that spans both wired and wireless access control through Forescout.
  • Experience with 802.1X / NAC, DHCP, HTTPS, TCP, Netscout, Radius, etc. and access control policy development and management and device remediation
  • Experience with IOT and BYOD device access policy controls
  • Very good communication skill.

5.Flexible in 24

  • 7 client support

    • Good-to-Have : -

  • Additional certification in any network technology (CCNA, CCNP)
  • 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.

    • 2.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

    • 3.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.

    • 4.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.

    • 5.VPN Plug-in Configuration : Configure VPN plugin to help identify and validate devices connecting via VPN.

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    Network Administrator • Greater Hyderabad Area, India

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