Firewall Migration Services
SonicWall to Fortinet. Meraki MX to Fortinet. WatchGuard to Fortinet. Cisco ASA to Fortinet. Senior-led firewall migration with documented configuration translation, parallel deployment where possible, scheduled cutovers with rollback plans, and post-cutover validation. Multi-site capable. The kind of project where you don’t lose business hours to a vendor swap.
Track Record
We only do networks. That is not a limitation — it is why the outcomes are different.
Years of network-only practice. Architecture, security, and operations — not IT generalism.
Sites delivered. Healthcare clinics, law offices, financial branches, multi-site operations.
Unplanned downtimes following network redesigns. Every implementation, with the precision it requires.
Senior engineer–led. No junior handoffs. No ticket queue. No escalation chain.
Career aggregate. The 20+ years and 300+ sites span the operator’s full network-only practice, including prior-employer engagements. Zero unplanned downtimes reflects post-redesign performance on engagements where the architecture standard described above was applied.
Why Firewall Migrations Get Messy
Vendor migration tools (Fortinet’s, Cisco’s, Palo Alto’s) all promise to translate your existing config. They all do, partially. What they don’t do: catch the policy logic that worked because of how the old vendor handled NAT, rebuild the IPS rule semantics that don’t map 1:1, or test the migrated config under real load. That last 20% — the part the tools miss — is where migrations break. We do that part by hand.
Auto-conversion tools handle 80% of the rules. The remaining 20% — vendor-specific logic, NAT quirks, IPS rule semantics, VPN settings — gets translated by an engineer who understands both vendors. Without that, you ship a migration that works in lab and breaks under production load.
Where the network topology allows, we deploy new firewalls in parallel with the old ones, validate the new config under real traffic, then cutover with one well-tested change. This is how migrations should work; the alternative (rip-and-replace at 2 a.m.) is how migrations fail spectacularly.
Every cutover has a documented rollback. If something goes wrong post-cutover that we cannot fix in the maintenance window, we revert to the old firewall and analyze the issue without business impact. Migration projects with no rollback path are gambles, not engineering.
We migrate from SonicWall, Meraki, WatchGuard, Cisco ASA, Palo Alto, and others — primarily to Fortinet, sometimes to Palo Alto where the existing investment justifies. The engineer leading your migration knows both vendors well, not just the destination.
Migration Project Phases
Every firewall migration is the same five phases. Each is documented, each has explicit deliverables.
Full inventory of the existing firewall: rule base, NAT policies, IPS/IDS posture, SSL inspection, VPN tunnels, identity-provider integration, custom scripts. Output: documented current state and risk register.
Translation of source config to target vendor. Auto-conversion tools handle 80%; the remaining 20% (vendor-specific NAT logic, IPS rule semantics, VPN settings, custom scripts) gets translated by hand. Output: target firewall config, ready for lab validation.
Target config deployed in lab or in parallel position with old firewall. Traffic patterns tested, IPS rule behavior validated, VPN tunnels established. We don’t cutover a config that hasn’t been tested under real traffic patterns first.
Scheduled maintenance window. Cutover steps documented and rehearsed. Post-cutover validation steps run live. If post-cutover validation fails, rollback path executes — no business impact beyond the maintenance window.
24–48 hour monitoring window post-cutover. Tuning IPS rules, fine-grained policy adjustments based on actual traffic, decommission of old firewall once new one is stable. Documentation handed off to your team or transitioned to ongoing managed operations.
Multi-site migrations: each site is its own contained Phase 4–5 cycle. Sites cutover in waves of 3–5, with 1–2 week stabilization between waves. A problem at site 5 does not block sites 1–4 from being live on the new architecture.
Migration Patterns We Run
Different starting vendors, same engineering discipline. These are the migration patterns we run most often.
National scope. Migration project work is primarily remote engineering, with on-site presence at cutover windows where it’s warranted. California-headquartered, multi-site clients nationally.
Our Approach
No mystery. No black box. Every step is documented, explained, and approved before execution.
A complete risk assessment of your current network. Configurations reviewed. Segmentation validated. Gaps documented. You get a clear picture — not a sales pitch.
Address critical risks first, then build toward a standardized architecture. Every change documented, tested, and deployed without disruption.
Ongoing monitoring, change management, and architectural review. The network does not just work today — it evolves with your operations.
Your Engineer
Not a team of rotating technicians. Not a ticket queue. One named senior engineer who knows your environment, your compliance requirements, and your business context — from assessment through ongoing operations.
The person who designs your network is the person who maintains it. No handoffs. No abstraction. No loss of context when something breaks at 2 a.m.
Background: Founder, ex-Meta. Past engagements include Cisco, Wells Fargo, Fannie Mae, and other Fortune 500 networks — the same caliber of engineering, now applied to mid-market organizations.
Ambio Edge Networks works with industry-leading networking and security vendors to deliver the infrastructure your operations depend on.
When Migrations Make Sense
Migrations are driven by specific business events. These are the most common triggers we see.
The most common trigger. Vendor announces EOS for the platform you’re running, support contracts get expensive, security updates stop. Migrating to a current platform is no longer optional — it’s a deadline-driven project.
Existing vendor licensing has gotten expensive (per-user, per-feature creep), or the FortiGate equivalent costs significantly less for similar capability. Migration project pays back in <18 months purely on license savings.
Existing firewall doesn’t do something the business now needs: SD-WAN, ZTNA, modern IPS, compliance-grade logging. Rather than bolt on multiple new tools, migrate to a platform that includes the capability natively.
Post-acquisition cleanup: two organizations with different firewall vendors. Migrating to a single standard reduces operational overhead and security tooling fragmentation. Often runs in parallel with broader IT integration.
SOC 2 audit findings, HIPAA risk-assessment outputs, or PCI-DSS scope reduction projects often surface that the existing firewall doesn’t produce the evidence auditors want. Migration to a platform that does (with proper change-management processes wrapped around it) becomes the path forward.
Switching from one managed service provider to another. The outgoing MSP’s preferred vendor often differs from the incoming one. Migration project bundled with the MSP transition simplifies the operational handoff.
FAQ
Most clients we migrate land on Fortinet for three reasons: capability consolidation (SD-WAN + ZTNA + IPS + Wi-Fi + secure remote access in one platform vs. 3–5 separate tools), per-site economics (FortiGate gives mid-market organizations enterprise-grade security without enterprise per-user pricing), and operational depth (we run Fortinet practice deeply, which compounds across clients). For non-Fortinet shops, we’ll migrate to Palo Alto, Cisco Firepower, or others — just won’t recommend them as new-build standards for mid-market.
Partially. Fortinet’s migration tools (and similar from other vendors) translate the easy 80% of rules cleanly. The hard 20% — vendor-specific NAT logic, custom IPS rules, VPN configurations with bespoke settings, integration scripts — needs hand translation. Migrations that rely solely on auto-conversion ship configs that work in lab and break in production. We do the hand-translation portion.
Rollback. Every cutover plan documents the exact steps to revert to the original firewall. If post-cutover validation fails in ways we can’t fix in the maintenance window, we revert — no business impact, no data loss. Then we analyze the failure mode and re-plan. We’ve never had a multi-site migration where every site cut over flawlessly the first time; what matters is the rollback path always works.
Single-site migrations typically run 4–8 weeks end-to-end (audit, design, lab, cutover, post-cutover). Multi-site migrations run 3–9 months in waves depending on site count and complexity. Hardware procurement and license processing are sometimes the longest single dependency — we start that in Phase 1 to keep the project on schedule.
Single-site migration projects: $5,000–$15,000 fully scoped. Multi-site rollouts (5–15 sites): $30,000–$80,000 for engineering and project management. Hardware and license costs are passed through (typically $2,000–$15,000 per site depending on FortiGate model and license tier). Real numbers come out of Phase 1 source audit.
Yes — this is the most common path. After migration completes, most clients transition into ongoing managed firewall operations: configuration management, policy review, license renewal, ongoing posture monitoring. Migration projects are typically the entry point to a managed-operations relationship rather than a one-shot engagement.
Start the Firewall Migration
Before we plan a target architecture or schedule a cutover window, we audit what you have today. Output: a documented current-state inventory, gap analysis against your migration goals, and a recommended migration plan with phasing. Whether you proceed with us or take it to another partner, the audit is yours.
Response from a senior engineer within 1 business day.
A direct conversation — no sales team, no runaround.
An honest assessment of whether we are the right fit.
Clear next steps if we are — no pressure if we are not.
