Networking

Enterprise network architecture from access to core.

Core Competencies

Domain Coverage

Fundamentals

OSI model, TCP/IP, subnetting, VLANs

Routing

OSPF, BGP, VRF, policy-based routing

Switching

Spanning Tree, EtherChannel, port security

Network Access Control

802.1X, Cisco ISE, RADIUS, profiling

Firewalls

pfSense, Cisco ASA, Palo Alto

Segmentation

Zero Trust, microsegmentation, SGT

Wireless

802.11 standards, WPA Enterprise, site surveys

Troubleshooting

Packet capture, Wireshark analysis

Vendor Coverage

This documentation covers multiple vendors:

  • Cisco — IOS, IOS-XE, NX-OS

  • Aruba — AOS-CX, wireless

  • pfSense — Open source firewall

  • Palo Alto — Next-gen firewall

802.1X Deep Expertise

Network access control is a specialty:

┌──────────┐     EAP      ┌──────────┐    RADIUS    ┌──────────┐
│ Endpoint │◄────────────►│ Switch/  │◄────────────►│   ISE    │
│          │   802.1X     │   AP     │              │          │
└──────────┘              └──────────┘              └──────────┘
     │                                                    │
     │         Certificate / Credential Validation        │
     └────────────────────────────────────────────────────┘

Related

  • Linux — Linux endpoint configuration

  • Windows — Windows endpoint configuration

  • Security — Identity and access management