For a community engineer, the cutover weekend is usually essentially the most disturbing 48 hours of their profession. Think about a 30,000-user group trying to flip 1,000+ legacy functions from fragmented VPNs to a brand new structure in a single window. The stakes are immense: a single misconfigured firewall rule or a timed-out session can halt important companies and result in operational gridlock.
This “big bang” migration danger is the one best barrier to Zero Belief adoption. Organizations typically really feel trapped between an ageing, weak infrastructure and a migration course of that feels too dangerous to aim.
Cloudflare and Expertise Options Supplier CDW are altering this narrative. We imagine {that a} profitable transition to SASE (Safe Entry Service Edge) should not really feel like a leap into the darkish. By combining Cloudflare’s world Zero Belief platform with CDW’s expertise navigating the {industry}’s most advanced deployment failures, we offer the strategic roadmap to de-risk the journey. We do not simply transfer your “plumbing” — we guarantee your legacy debt is reworked into a contemporary, agile safety posture with out the downtime.
Leveraging associate experience to keep away from migration traps
Conventional migrations typically fail as a result of they deal with the community as easy plumbing relatively than a fancy ecosystem of functions. And not using a granular technique, many organizations fall into the “lift and shift” entice — trying to maneuver a whole lot of functions concurrently with out understanding their back-end dependencies.
To keep away from this, CDW makes use of a risk-aware, tiered methodology. This strategy categorizes each software in your atmosphere by its technical complexity. We transfer easy, fashionable apps first to construct momentum whereas saving advanced, legacy programs for a extra managed, later stage.
A current large-scale public sector challenge serves as a cautionary instance of what can occur with out this construction. On this case, a staff tried emigrate 500 functions directly. As a result of they lacked a tiered methodology to prioritize their 4,000+ functions, the transfer led to systemic service disruptions.
CDW’s position is to behave because the architect that stops these failures. CDW strategists, lots of whom are former safety practitioners, analyze these industry-wide failure factors to determine recurring anti-patterns that derail Zero Belief journeys and construct a extra resilient migration blueprint. By treating migration as an software modernization challenge relatively than a single connectivity swap, CDW ensures that safety necessities are constructed into the muse of the transfer relatively than bolted on as an afterthought.
Modernizing legacy apps with Cloudflare Entry
To maneuver away from the all-or-nothing dangers of the previous, we begin with the muse of the answer: Cloudflare Entry. Earlier than we have a look at how one can migrate advanced legacy functions, it’s necessary to grasp the worth of the platform itself. Cloudflare Entry replaces the broad, weak perimeter of a conventional VPN with a Zero Belief mannequin. As a substitute of granting a consumer entry to a whole community phase, Entry evaluates each single request primarily based on id, machine posture, and different contextual alerts. This considerably reduces the assault floor and prevents the lateral motion that results in the form of systemic outages we mentioned earlier.
As soon as this safety layer is in place, we are able to start “wrapping” legacy functions in Cloudflare Entry. This permits us to modernize the safety posture of an previous app with out really rewriting its code.
We do that wrapping in Cloudflare Entry utilizing a selected logic:
Drawback: A legacy software with no built-in Multi-Issue Authentication (MFA) is uncovered through a normal VPN, making a high-risk entry level for attackers.
Mitigation: Utilizing Cloudflare Tunnel, we create an outbound-only reference to each Single Signal-On (SSO) and MFA built-in. This successfully hides the applying from the general public Web, because it now not has a public IP deal with to scan or assault.
Coverage: We then apply a Cloudflare Entry coverage on the edge. This requires an endpoint hardware-based MFA verify and a tool well being scan earlier than a single packet ever reaches your server.
By utilizing this wrapping approach, CDW and Cloudflare make it attainable for organizations emigrate at their very own tempo. You get the rapid safety advantages of a contemporary cloud atmosphere, whereas your legacy apps proceed to run safely within the background.
Earlier than launching a pilot, IT leaders should audit the atmosphere for architectural readiness, guaranteeing legacy programs are technically appropriate with fashionable safety protocols. “For large deployments, we focus on application modernization,” says Eric Marchewitz, a safety options government at CDW. “Many legacy functions might break if least privilege entry was utilized with out correct preparation.”
1. Architectural & id evaluation
Decide id suppliers: Affirm which functions depend on a federated Id Supplier (akin to Okta) versus these utilizing legacy native directories.
Map dependencies: Doc backend database and API dependencies for every software to stop service interruptions. This information identifies the hidden API calls that usually break throughout a cutover if service token-based Tunnel connectivity will not be maintained on the backend.
Separate the challenge right into a Technique Group (targeted on safety requirements) and an Implementation Group (targeted on effectivity). This ensures that high-level safety necessities, like these wanted to stop lateral motion, will not be bypassed for the sake of deployment pace.
3. Persistent session stress take a look at
Establish functions utilizing legacy architectures to keep up session persistence and keep away from connection drops throughout mobile tower switching. Cloudflare’s structure, supported by Dynamic Path MTU Discovery (PMTUD), maintains a persistent session on the edge even because the shopper IP modifications. Figuring out these customers throughout the audit permits us to displace costly, inflexible legacy {hardware} with a contemporary, single-pass structure.
4. Categorization & timeline setting
As soon as full, the remaining stack is tiered to set practical implementation timelines:
Software Tier | Description | Estimated Migration Effort |
Tier 0 (Trendy SaaS Apps) | Native SAML/OIDC assist so Cloudflare acts as a clientless id supplier proxy throughout authentication | 1–3 hours per app |
Tier 1 (Inner Net Apps) | Commonplace id headers and fashionable net protocols assist a clientless reverse proxy deployment with Cloudflare Tunnel | 3–6 hours per app |
Tier 2 (Non-Net Consumer-Server Apps) | Particular port/protocol assist or thick-client configurations required so each Cloudflare One Consumer and Cloudflare Tunnel deployments are used | 4–8 hours per app |
Tier 3 (Legacy Enterprise Apps) | Advanced server-side connectivity (e.g. peer-to-peer, bidirectional) or back-end dependency necessities so Cloudflare Mesh or WAN deployments could complement Cloudflare Tunnel to assist. | 1–3 days per app; could require code revisions |
The roadmap to flee velocity
To attain “escape velocity” from legacy {hardware}, CDW follows a phased rollout that prioritizes coexistence over alternative.
Section 1: Technique & Infrastructure: Formation of technique and implementation groups. This part contains figuring out CDW strategists — former CISOs and designers — to behave as peer sounding boards.
Section 2: Pilot Rollout: Deployment of the Cloudflare One Consumer to a pilot group of workers. Throughout this part, we deal with widespread friction factors just like the “latency tax,” guaranteeing efficiency would not compromise safety.
Section 3: Manufacturing Scaling: Full scaling throughout the group. We preserve a dual-client interval the place customers run each legacy VPN and Cloudflare Entry in tandem, guaranteeing a protected rollback path and a neater end-user transition to the brand new Zero Belief strategy.
Efficiency as a safety characteristic
Cloudflare’s single-pass structure runs each safety verify concurrently.
“After we discuss to prospects in regards to the connectivity cloud, essentially the most impactful change is not simply the fashionable safety posture. It is the operational velocity,” notes Annika Garbers, Head of Cloudflare One GTM. “Moving to a single control plane allows a security team to stop being a bottleneck.”
By constructing on a post-quantum encrypted basis, we guarantee this bridge is future-proofed towards the following era of threats.
Construct your bridge with Cloudflare One’s agile SASE
Modernization is about constructing a bridge, not a “big bang.” This system is refined by our Accomplice Technical Advisory Board, the place associate suggestions informs our product roadmap straight. By specializing in software modernization and a phased rollout, organizations can regain architectural management and get rid of the fragmentation penalty for good.
The mix of Cloudflare’s SASE platform and CDW’s migration experience supplies a security internet for the journey. You get the rapid safety advantages of identity-based entry and phish-resistant MFA, with out the operational gridlock of an enormous, unmapped cutover.
The objective is not simply to maneuver your functions to the cloud. It’s to make sure that once you get there, your atmosphere is extra resilient, extra seen, and considerably tougher to breach.
Able to de-risk your journey to a zero belief structure? Use CDW’s Zero Belief Maturity Evaluation to determine the hidden dependencies in your atmosphere. Attain out to a Cloudflare One skilled to begin your transition with a confirmed blueprint.
