Lusonetix — Network Security Engineering (Peter Kok)

About

Peter Kok is an experienced Network Security Engineer with over 25 years in infrastructure and security roles across financial institutions, managed service providers and education. Certified in OSCP, eWPTX, AZ‑700, CCNP Security and Enterprise, he combines deep hands‑on expertise with Palo Alto, Fortinet, Cisco, and automation using PowerShell and Python. Through Lusonetix he provides consultancy and implementation support for secure, scalable networks. Available for remote engagements starting January 2026.

Expertise

Hands‑on security engineering in complex environments; bridging architecture, implementation and operations.

Platforms & Vendors

Palo Alto Networks (NGFW, Panorama, GlobalProtect)
Fortinet (FortiGate, FortiAnalyzer)
Infoblox (DNS/DHCP/IPAM)
Aruba switches (AOS‑CX/AOS‑S, NAC integrations)
Cisco (routing/switching, ASA/FTD, ISE)
Tenable Nessus (vulnerability assessment)

Certifications

OSCP — Offensive Security Certified Professional
AZ‑700 — Microsoft Azure Network Engineer Associate
eWPTX — eLearnSecurity Web Application Penetration Tester eXtreme
CCNP Security
CCNP Enterprise

Experience (short)

Selected highlights beyond LinkedIn — including financial sector, ISP and education projects.

Solvinity — Security Engineer (5 years, Managed Services / ISP)

Responsible for technical operations within the Security & Compliance team.
Managed Tenable vulnerability management, Palo Alto and Cisco ASA firewalls.
Performed pentests, handled incidents, and improved security awareness.
Developed automation for DDoS mitigation, phishing simulations and botnet investigations.

Advo ICT Professionals — Cisco Specialist (6 years, ISP)

Designed, configured and managed Cisco-based networks (firewalls, routers, switches, Wi‑Fi).
Delivered DMVPN and IPv6 implementations, BGP peerings and RIPE administration.
Introduced network monitoring and automation with custom scripts.

Rabobank — Network Security Engineer (2 years, Banking)

Managed and maintained Infoblox, Palo Alto and Check Point environments.
Automated tasks with PowerShell and Bash for NSX‑T firewall migration, DNS cleanup and IP reputation checks.
Part of Analytics team investigating incidents with the Cyber Defense Center.

De Volksbank — Connectivity Engineer (3 years, Banking)

Ensured datacenter network availability and security within the connectivity team.
Executed network segmentation using Palo Alto, Infoblox, Arista and VMware.
Automated change and validation processes via Python and PowerShell.

Educational Sector — Senior Network Specialist (1.5 years)

Improved network performance and resilience, mitigating DDoS and overload issues.
Replaced SonicWall firewalls with FortiGates and redesigned core network topology.
Enhanced overall security posture and led a small network operations team.

Availability & Engagement

Available from January 2026.
Remote‑first; on‑site by arrangement.
Based in Montemor‑o‑Novo, Portugal (UTC+0/+1); working across EU time zones.

Contact

Email: peter.kok@lusonetix.com

LinkedIn: /in/peterkok5

Company: Lusonetix, Unipessoal LDA