Firewall Jobs

We are Optedif Formation, a French training organization delivering short professional training programs for adults, entrepreneurs, employees, freelancers, job seekers and people in career transition. We are looking for experienced trainers, instructors or subject-matter experts in Administration des réseaux informatiques (Network Administration) to deliver short training sessions in French. The training may be delivered remotely or on-site depending on the learners’ needs. Scope of Work The selected freelancer will be expected to: * Deliver short training sessions in French * Adapt explanations to adult learners * Share practical and operational knowledge * Use existing training material or help improve it when needed * Create a positive and constructive learning environ...

Project Overview: We are looking for an expert, senior-level Enterprise Network Architect/Engineer to lead a multi-vendor project deployment, design review, and the production of final As-Built documentation. Our current infrastructure environment requires deep architecture alignment across modern software-defined networking (SDN), zero-trust security components, and centralized management fabrics. This is a critical infrastructure project requiring strict adherence to security compliance, high availability, and optimal traffic routing principles. Scope of Work: 1. Architecture & Design Review -Conduct a thorough review of the current network topologies, security zones, and high-level designs. -Identify potential bottlenecks, asymmetrical routing risks, and security gaps before act...

My site-to-site IPsec tunnel was built following best-practice guides, yet the link keeps dropping for reasons I can’t see. The firewall on my side is an Opnsense appliance, and each time the tunnel fails the logs simply show that the connection drops intermittently without any clear error codes. I may have tweaked something recently, but I’m honestly not sure which setting—so I need a fresh, expert pair of eyes. You should be comfortable working with Opnsense and, ideally, have experience on Checkpoint or other enterprise firewalls so you can think through the usual Phase 1 / Phase 2, NAT-T, lifetime, and crypto-profile culprits quickly. I can give you full access to the existing configuration, live logs, and packet captures through a remote session. The job is compl...

I need a Remote Access VPN set up on my Fortinet firewall so that staff can connect securely from outside the office using FortiClient. The connection will rely on simple password-only authentication—no tokens or certificates this time—so the job focuses on properly creating user accounts, assigning policies, and ensuring encryption settings follow Fortinet best practices. Here’s what I expect once you’re done: • A working FortiClient profile that users can import and connect with. • All necessary firewall objects, user groups, and security policies configured and saved. • Clear step-by-step documentation so I can duplicate the setup or make edits later. • A brief remote test session to confirm that the tunnel comes up, internal resources are re...

I need a well-researched, publish-ready case study that examines how a technology company strengthened its overall network security by redesigning its firewall implementation. The goal is to show, step by step, what triggered the initiative, which design choices were made, how the solution was deployed, and what measurable results followed. Scope • Center the narrative on network security within a real or anonymized technology-sector setting. • Give special, in-depth attention to firewall architecture and rule-set hardening; intrusion detection systems or VPN references are welcome only where they help explain the firewall strategy. • Blend technical detail—vendor models, topology diagrams, configuration highlights—with business impact (risk reduction, com...