Security & network access / Firewall & VPN
Firewall and VPN.Change security boundaries deliberately.
A successful migration does more than copy rules to a new platform. We restore purpose and dependencies, design management and access, and verify the functions your business actually needs after cutover.
Scope of service
What you receive.
This service fits hardware lifecycle, platform changes, data-centre moves, carrier changes, VPN replacement and evolved policy sets. We separate internet, site connectivity, remote access, management and internal zones. Broad or unclear rules become visible, but are not removed during the project window without operational agreement.
A dependable policy and object baseline
Rules, objects, NAT, routes, VPNs, certificates and management dependencies are inventoried. Purpose, hits and ownership are connected where evidence exists; unsupported legacy items stay visibly marked.
A reviewed target configuration
Functions and platform differences are compared before migration. Settings that cannot be transferred or behave differently become explicit decisions rather than surprises during the maintenance window.
A cutover with a fallback
Backup, prerequisites, sequence, go/no-go, communications and fallback are documented. Remote management and administrative access receive particular protection against lockout.
Functional testing and handover
Internet, published services, site VPN, remote access, DNS, routing and selected applications are tested against an agreed catalogue. Evidence and residual items move into operational documentation.
The delivery path
Three controlled steps.
- 01
Capture the estate and functions
Secure configuration backups, structure policy and access, and confirm critical traffic paths and external dependencies.
- 02
Test the target and migration
Review conversion, platform differences, management and representative rules. Validate in a lab or pilot where practical.
- 03
Cut over, verify and hand over
Execute the approved cutover, evaluate test and fallback decisions promptly, then hand over the accepted state with documentation.
What we agree before starting
A migration cannot automatically resolve historical uncertainty. Policy cleanup needs application and business owners. Vendor conversion tools assist but do not constitute acceptance. Licensing, certificates, carriers, client rollout, on-call cover and ongoing firewall operations are assigned explicitly in the proposal.
Good to know
Your questions. Clear answers.
Can you copy the rules to the new firewall automatically?
Tools can convert portions, but syntax equivalence is not functional equivalence. We review platform differences, objects, NAT, routing, VPN and management. Ambiguous rules still need an operational decision.
How do you prevent an administrative lockout?
The management path, console or on-site access, permissions and fallback are checked beforehand. The available safeguards depend on the site and platform and become a dedicated go/no-go criterion.
Can the policy be cleaned up during migration?
Yes, deliberately. Clearly unused or duplicate objects can be prepared. Operationally unclear access is observed, assigned to an owner and either removed separately or consciously carried into the migration.
Let’s discuss your requirements
A few details are enough to begin.
You do not need a finished design. We establish the need, boundaries and a dependable next step.
Discuss a firewall migrationHelpful for the first conversation
- Configuration backups, models and software versions
- Internet, NAT, VPN and management paths
- Critical applications and external partners
- Maintenance window, test owners and fallback threshold
Please do not submit passwords, API keys or confidential network plans through the form.
Explore the technical detail
Treating management planes as a security boundaryTechnical background: Cisco FMC Model Migration Workflow