Fortinet Authorized · NSE7 Certified · Zero-Downtime Cutover

Firewall Migration to FortiGate G-Series
Cisco ASA · Sophos · Palo Alto → Fortinet

Replace aging or EOL firewalls with FortiGate's SP5-powered NGFW. Policy audit, automated rule conversion, parallel run testing, and zero-downtime cutover — handled end-to-end by our NSE7-certified team.

Why Migrate?

Why Migrate Your Firewall Now

End-of-life hardware stops receiving security patches. Every month you run an EOL firewall, you are exposed to known vulnerabilities that attackers actively exploit. Cisco ASA 5500-X series, Sophos XG, and older Palo Alto PA-3000/5000 models are all past or approaching EOL.

Licensing costs on legacy platforms have skyrocketed. Cisco Firepower subscriptions, Sophos Xstream Protection, and Palo Alto Threat Prevention bundles cost more each renewal cycle — often exceeding the cost of a new FortiGate with equivalent features.

Modern threats require SSL deep inspection, sandboxing, and ZTNA — features that older firewalls either lack or perform poorly. FortiGate G-series delivers these features at wire speed with the SP5 ASIC, not software processing.

3-5x
Better Price-Performance (SP5 ASIC)
Zero
Downtime with Parallel Run
100%
Rule Audit Before Migration
NSE7
Certified Engineers

Our Migration Methodology

1

Policy Audit

Export and audit every firewall rule, NAT policy, VPN tunnel, and route. Identify shadow rules (never-hit), overlapping rules, and overly permissive policies. Document current traffic flows and dependencies.

2

Rule Conversion

Use FortiConverter for automated bulk conversion of address objects, service objects, and security policies. Manually convert complex rules, custom application signatures, and VPN configurations. Clean up unused objects.

3

Parallel Run

Connect FortiGate alongside existing firewall in monitor mode. Mirror traffic and validate that all policies match expected behaviour. Test VPN tunnels, NAT translations, and routing. Run for 1-2 weeks before cutover.

4

Cutover & Validation

Switch production traffic to FortiGate during a planned maintenance window (15-30 min). Validate all traffic flows, VPN connectivity, and application access. Keep old firewall on standby for 48-hour rollback window.

FortiGate G-Series — Why It Wins

SP5 ASIC — Hardware Acceleration

Fortinet's 5th-generation security processor delivers hardware-accelerated firewall, VPN, and IPS throughput. SSL deep inspection runs at wire speed — no performance cliff when you enable security features.

Security Fabric Integration

FortiGate integrates natively with FortiSwitch, FortiAP, FortiManager, FortiAnalyzer, FortiSandbox, FortiEDR, and FortiSASE. Single-vendor ecosystem with unified policy management and threat intelligence sharing.

Consolidated Security

NGFW + IPS + web filter + anti-malware + application control + SSL inspection + SD-WAN + ZTNA proxy — all in one appliance. Eliminate point products and reduce management complexity.

We Migrate From Any Platform

Cisco ASA / Firepower

ASA 5500-X, Firepower 1000/2100/4100/9300, FTD. Full ACL, NAT, and AnyConnect VPN conversion.

Sophos XG / XGS

Sophos XG and XGS series. Policy export, web filter category mapping, and VPN migration.

Palo Alto Networks

PA-400/800/3200/5200/7000 series. App-ID to FortiGate application control mapping. Panorama to FortiManager migration.

Check Point / Juniper

Check Point NGFW (R80/R81), Juniper SRX. FortiConverter supports automated policy extraction and conversion.

HA Configuration & VPN Migration

Production firewalls run in HA pairs — active-passive or active-active. We deploy FortiGate HA clusters with dedicated heartbeat links, session synchronisation, and firmware upgrade procedures that maintain HA throughout the process.

VPN migration requires careful coordination. We map every site-to-site IPsec tunnel, document IKE/IPsec parameters, and pre-configure matching tunnels on FortiGate. Remote peers are switched one at a time with validation. SSL VPN users migrate to FortiClient with auto-provisioned profiles via EMS.

For organisations with ZTNA requirements, we configure FortiGate's built-in ZTNA proxy to replace traditional VPN access — providing application-level zero-trust access instead of network-level VPN tunnels.

VPN Migration Checklist

  • Map all site-to-site IPsec/GRE tunnels with IKE parameters
  • Document remote peer IP addresses and PSK/certificates
  • Configure matching tunnels on FortiGate in parallel
  • Test tunnel establishment and traffic flow per tunnel
  • Switch remote peers one at a time with rollback plan
  • Migrate SSL VPN to FortiClient + EMS auto-provisioning
  • Evaluate ZTNA proxy as VPN replacement for remote access
  • Update DNS and routing for VPN traffic post-cutover

Security Fabric — Beyond the Firewall

FortiGate is the anchor of Fortinet's Security Fabric. Migrating to FortiGate opens the door to a fully integrated security ecosystem.

FortiSwitch + FortiAP

Manage switches and wireless APs directly from FortiGate. Unified policy for wired + wireless. No separate switch or WLAN controller needed.

FortiSandbox

Zero-day threat detection via inline sandboxing. Suspicious files from FortiGate are detonated in FortiSandbox and verdicts shared across the entire Fabric.

FortiSASE

Extend FortiGate policies to remote users and branch offices via cloud-delivered SASE. Same policies, same management, cloud-native delivery.

Ogma's Firewall Migration Process

1

Assessment & Policy Audit

Collect running configurations from existing firewalls. Audit every rule for hit count, relevance, and compliance. Identify shadow rules, unused objects, and overly permissive policies. Produce a migration scope document with risk assessment.

2

FortiGate Sizing & Procurement

Size FortiGate model based on throughput requirements with all security features enabled (not just firewall throughput). Procure hardware, FortiGuard subscription bundles, and FortiManager/FortiAnalyzer if needed. As authorised Fortinet partner, we handle everything.

3

Rule Conversion & Configuration

Run FortiConverter for automated bulk conversion. Manually convert and optimise complex rules. Configure VPN tunnels, HA cluster, routing (BGP/OSPF/static), NAT policies, and NGFW security profiles. Full lab testing before deployment.

4

Parallel Run & Testing

Deploy FortiGate alongside existing firewall. Mirror traffic and validate policy behaviour. Test HA failover, VPN tunnels, NAT translations, and application access. Run for 1-2 weeks with daily monitoring reports.

5

Production Cutover

Planned maintenance window (15-30 min). Re-cable, update default gateway, verify all traffic flows. VPN peers switched with validation. Old firewall kept on standby for 48-hour rollback window. Post-cutover monitoring for 72 hours.

6

Optimisation & Handover

Enable advanced NGFW features (SSL inspection, sandboxing, ZTNA). Optimise security profiles based on traffic analysis. Configure FortiAnalyzer dashboards and alerts. Deliver runbook and train your team. 30-day post-migration support.

Why Ogma for Firewall Migration

NSE7 Certified Team

Our engineers hold Fortinet NSE7 Enterprise Firewall certifications. We deploy FortiGate across Indian enterprises weekly — from 60F branch units to 600G data centre clusters. Deep FortiOS expertise, not generic firewall knowledge.

Single Vendor — Procure + Deploy

As authorised Fortinet reseller, we handle hardware procurement, FortiGuard licensing, migration services, and post-deployment support — one vendor, one contract, one throat to choke.

Proven Migration Process

Policy audit, FortiConverter automation, parallel run, and planned cutover with rollback. Every migration follows the same battle-tested process — no shortcuts, no surprises. 30-day post-migration support included.

Frequently Asked Questions

For a single-site migration with under 500 firewall rules: 2-3 weeks (assessment + conversion + parallel run + cutover). Multi-site migrations with complex VPN topologies and thousands of rules take 4-8 weeks. We always run the new FortiGate in parallel with your existing firewall for at least 1 week before cutover to validate all traffic flows.

The cutover window is typically 15-30 minutes per site — just enough time to re-cable and update default gateway. We pre-configure the FortiGate completely before cutover. For HA deployments, we can do rolling cutover with near-zero downtime. VPN tunnels are pre-built and tested before the switch.

Partially. We use Fortinet's FortiConverter tool to automate bulk rule conversion from Cisco ASA, Palo Alto, Check Point, Juniper, and Sophos configurations. FortiConverter handles address objects, service objects, NAT rules, and basic security policies. However, complex rules, VPN configurations, and custom features require manual review and adjustment by our engineers. We audit every converted rule for accuracy.

FortiGate G-series uses Fortinet's custom SP5 ASIC, which delivers hardware-accelerated firewall, VPN, IPS, and SSL inspection throughput at 3-5x better price-per-performance than competing software-based NGFWs. The Security Fabric provides tight integration with FortiSwitch, FortiAP, FortiManager, FortiAnalyzer, and FortiSASE. And Fortinet consistently leads in Gartner Magic Quadrant for Network Firewalls.

We map all existing site-to-site VPN tunnels (IPsec/GRE), remote access VPN (SSL/IPsec), and any SD-WAN overlays. The FortiGate is pre-configured with matching VPN settings. For site-to-site tunnels, we can run parallel tunnels (old + new firewall) and switch remote peers one at a time. FortiClient replaces existing SSL VPN clients for remote access.

Yes. We deploy FortiGate in active-passive or active-active HA clusters as standard for production environments. HA configuration includes heartbeat links, session synchronisation, firmware upgrade procedures, and failover testing. We test failover during the parallel run phase to ensure sub-second switchover before going live.

EOL firewalls stop receiving security updates, leaving known vulnerabilities unpatched. If your Cisco ASA 5500-X, Sophos XG, or older Palo Alto model is EOL or approaching EOL, migration is urgent. We provide expedited migration for EOL situations — assessment and parallel run compressed into 2 weeks with priority scheduling.

Yes. We regularly migrate from Cisco Firepower Threat Defense (FTD) to FortiGate. The process includes extracting policies from Firepower Management Center (FMC), converting access control policies, NAT rules, and IPS profiles, and rebuilding VPN configurations. Organisations often migrate away from FTD due to complexity and licensing costs.

Ready to Upgrade Your Firewall?

Get a free migration assessment. We audit your current firewall, map the rules, and give you a fixed quote for the complete migration — no hidden costs.

FortiGate Solutions