TN/2026 SECURE SYSTEMS. RELIABLE NETWORKS.
TharakeshwarNavarathinam
Cybersecurity &
Network Engineer
I design, build, and secure modern network infrastructure—keeping organizations connected, observable, and resilient.
Module 02Firewall
- Status
- Active
- Stateful inspection
- 1,842 blocked
360° Drag to rotate · click hardware
TN@PORTFOLIO:~$ whoami
> tharakeshwar_navarathinam
> role: cybersecurity_engineer
> focus: secure_network_systems
TN@PORTFOLIO:~$
Recruitment handshake Channel open
Connection windowOpen to opportunitiesCybersecurity · Network Engineering
02 Knowledge control room
Education
Academic inputs integrated into one evolving cybersecurity knowledge system.
Input terminals Select a source to inspect
● Select a university terminal to inspect its academic signal
03 Career network
Work Experience
Securing enterprise and critical-infrastructure networks across routing, cloud, firewall, and automation layers.
TN_OPERATIONS_CONSOLE LINK ACTIVE
Selected nodePJM InterconnectionNetwork Security Engineer
- Duration
- Jan 2026 — Present
- Location
- Pennsylvania, USA
- Record count
- 05 verified
Palo AltoSplunkAWS networkingPython / Ansible
PKT.01
Grid segmentationConfigured Palo Alto firewalls, segmented network zones, ACLs, and least-privilege policies supporting PJM grid operations.
ACK / VERIFIEDPKT.02
Traffic investigationEvaluated routing paths, VPN connectivity, firewall logs, Splunk data, and packet captures across critical network segments.
ACK / VERIFIEDPKT.03
AWS integrationIntegrated AWS VPC security groups, NACLs, and Transit Gateway controls with on-premises connectivity for secure hybrid segmentation.
ACK / VERIFIEDPKT.04
Policy automationAutomated recurring firewall validation and configuration checks with Python and Ansible for standardized monthly security reviews.
ACK / VERIFIEDPKT.05
Change validationValidated failover, IDS alerts, and approved maintenance changes, reducing post-change network incidents by 15%.
ACK / VERIFIED● Select a company node to reroute the experience data
01 Selected operation
Projects
Security engineering work built to turn noisy network activity into clear, actionable signal.
Open-source detection lab Featured
PROJECT / 001
C2 Beaconing
Detection
A network-security project focused on identifying the regular callback patterns that can reveal command-and-control beaconing hidden inside traffic.
Inspect repositoryBEACON_ANALYZERLIVE / PASSIVE
HOSTOUTBOUND CALLBACKINTERVAL
12s
12s
11s
12s
12s
11s
Pattern classificationPERIODIC BEACONConsistent callback cadence detected
!$ analyze --traffic capture.pcap
Research archive
Peer-reviewed work0102 Research output
Publications
Conference publication · Co-author
Machine Learning for
Network Intrusion Detection
Research exploring machine-learning methods for detecting malicious activity in network traffic and strengthening intrusion-detection capabilities.
Machine learningNetwork securityIntrusion detection
Read on IEEE Xplore 04 Field intelligence / Medium
Intelligence Dispatches
Feed onlineNETWORK OPERATIONS / OPEN SOURCE5 reports indexed
Priority intelligenceINTEL-005
Layer 2 Resilience STP / 802.1D
Root Bridges, Blocked Ports & Beyond: A Journey into STP
A practical journey through root-bridge elections, port roles, blocked paths, and the logic that keeps switched networks loop-free.
Report indexSecure external link
INTEL-004VLAN / 802.1Q
Hands-on Lab
VLAN Mini Lab: Trunking and Inter-VLAN Routing
A focused switching lab that connects VLAN segmentation, trunk links, and routing between isolated broadcast domains.INTEL-003DHCP / DORA
Network Services
Understanding DHCP: Automating IP Address Management
An approachable breakdown of how DHCP automates address allocation and gives endpoints the configuration needed to communicate.INTEL-002VLAN / L2
Network Segmentation
From Concept to Configuration: VLANs at the Core
From the idea of logical segmentation to practical switch configuration, this dispatch explains why VLANs sit at the core of network design.INTEL-001OSPF / AREA 0
Dynamic Routing
Understanding OSPF: A Beginner’s Guide with Cisco Packet Tracer
A beginner-friendly introduction to OSPF concepts, neighbor formation, route selection, and hands-on configuration in Packet Tracer.03 Technical credentials
Certifications
Professional certification, active preparation, and completed security training—classified clearly and verified by source.
TN / CREDENTIAL ARCHIVE ISSUE 2026
Technical field passportTharakeshwar
Tharakeshwar
Navarathinam
Cybersecurity & Network Engineering
- Professional
- 01 certified
- In preparation
- 01 active
- Course records
- 03 complete
Select a numbered passport tab to inspect each credential record.
ENTRY / 01SEC+
Professional certificationCertified
CompTIA Security+
Issued by CompTIA
Validated foundational security skills across threats, architecture, operations, governance, risk, and incident response.
VERIFIEDSEC+View certificate ↗Credential identifiers are intentionally omitted from this public portfolio.
03 Applied toolkit / hands-on knowledge
Tools
17 tools & platforms · drag to explore↔ Drag sphere
Wireshark
- Category
- Packet analysis
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