Technical Expertise
A structured inventory of operational proficiencies, protocols, systems, and deployment tools.
TCP/IP & OSI Architecture
Packet flow, frame encapsulation, handshake mechanics, and wire analysis across Layer 2 through Layer 7.
Routing Protocols (OSPF, BGP)
Single and multi-area OSPFv2/v3, ABR/ASBR summarization, metric cost calculation, and eBGP route advertisement.
VLANs & Inter-VLAN Routing
802.1Q trunking, sub-interfaces (Router-on-a-Stick), Layer 3 SVIs, and broadcast domain isolation.
IP Addressing & Subnetting
VLSM hierarchy, CIDR blocks, IPv6 dual-stack addressing, and efficient prefix allocation planning.
Core Services (DNS, DHCP, NAT)
DHCP relay configurations, authoritative DNS zones, dynamic PAT/NAT overloads, and DNSSEC verification.
Network Security & ACLs
Standard and extended access control lists, port security, DHCP snooping, and packet filtering policies.
Linux Operating Systems
Ubuntu Server and Debian administration: package managers, user quotas, permissions, and systemd units.
Web Servers & Reverse Proxies
Nginx and Apache web servers: virtual hosts, reverse proxies, SSL/TLS termination, and HTTP/2 setups.
Secure Shell (SSH) & Hardening
Public key authentication, SSH config tunnels, bastion hosts, and disabling password authentication.
Shell Scripting & Automation
Writing robust Bash scripts for system health checks, log aggregation, backup rotations, and cron jobs.
Docker Containers
Building custom images with multi-stage Dockerfiles, managing container networks, and volume persistence.
Cisco Packet Tracer Labs
Designing complex simulated WAN/LAN environments to test routing convergence, ACLs, and failovers.
Anycast DNS & Cloud Hosting
Managing geo-distributed Anycast DNS via ClouDNS, GitHub Pages static web distribution, and CDN edge delivery.
SD-WAN & Multi-Site Overlays
Connecting headquarters, branch offices, and municipal wards using Fortinet Secure SD-WAN, Cisco, and MikroTik IPsec tunnels with intelligent dynamic path selection and automated failover.
Network Separation & VRF-Lite
Implementing Virtual Routing and Forwarding (VRF-Lite) and 802.1Q tagged boundaries to keep financial, executive, student, and municipal e-Governance traffic strictly segregated at Layer 3.
Zero-Trust Campus & Port Isolation
Hardened micro-segmentation utilizing Private VLANs (Community & Isolated ports), 802.1X Network Access Control (NAC), dynamic VLAN assignment, and DHCP snooping with DAI.
Schools, Corporate & Municipalities LAN
End-to-end network architecture for educational institutes (schools/colleges), corporate business houses, and metropolitan local government bodies with high availability and SLA guarantees.
Enterprise Wireless & Guest Segregation
Centralized WLAN controller management, seamless AP roaming, isolated captive portal guest Wi-Fi, rate limiting, and rogue access point detection.
Surveillance & IoT Enclave Isolation
Quarantining IP CCTV surveillance cameras, biometric access control, and IoT building management systems into isolated DMZs with stateful inter-VLAN firewall inspection.