What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Do not replace a vulnerable VPN appliance with another perimeter box by default. Contain the exposed gateway immediately, then buy an access architecture that grants each authenticated user and trusted device only the applications it needs. For many distributed enterprises, that means evaluating Zero Trust Network Access (ZTNA), Secure Service Edge (SSE), or Secure Access Service Edge (SASE), while retaining a tightly hardened VPN only where legacy or site-to-site protocols still require it.
Start with containment, not procurement
A known vulnerability changes the order of operations. Purchasing and migration may take months; an exposed gateway can be attacked now. CISA’s December 4, 2024 guidance says organizations should harden VPN gateways by limiting external exposure and exposing only the ports that are minimally required. Its recommendations also include disabling unused VPN features and cryptographic algorithms, restricting administration to trusted paths, monitoring vendor advisories, and applying patches promptly.
CISA and its partners reported in 2024 that they had identified more than 22 Known Exploited Vulnerabilities related to VPN compromise. Treat that figure as a warning about exploitation in this product category, not as a prediction that every appliance is compromised. Your incident-response team should establish whether the specific device, software release, credentials, and connected systems were affected.
Immediate actions
- Apply the vendor’s emergency patch or mitigation, if one exists, and record the exact software version and configuration before changing it.
- Reduce Internet exposure to the minimum required ports and source networks. Remove unused listeners, tunnels, plugins, and protocols.
- Move administration to a dedicated management workstation or trusted management network. Restrict management ACLs and disable unauthenticated management protocols.
- Rotate credentials, certificates, tokens, and keys that could have traversed or been stored on the gateway. Revoke sessions that cannot be explained.
- Preserve authentication, administrative, configuration, and network logs before retention limits overwrite them. Send copies to your monitoring platform.
- Check vendor advisories continuously and define an emergency change path so a critical patch does not wait for the normal release cycle.
These steps reduce current risk; they do not decide what the replacement should be. Procurement should begin only after the organization has documented affected applications, users, branches, partners, and legacy protocols.
#1 Best Overall
- POWERFUL SECURITY KEY: The YubiKey 5C NFC is the most versatile physical passkey, protecting your digital life from phishing attacks. It ensures only you can access your accounts
- WORKS WITH 1000+ ACCOUNTS: Compatible with popular accounts like Google, Microsoft, and Apple. A single YubiKey 5C NFC secures 100+ of your favorite accounts, including email, password managers, and more
- FAST & CONVENIENT LOGIN: Plug in your YubiKey 5C NFC via USB and tap it, or tap it against your phone (NFC), to authenticate. No batteries, no internet connection, and no extra fees required
- MOST SECURE PASSKEY: Supports FIDO2/WebAuthn, FIDO U2F, Yubico OTP, OATH-TOTP/HOTP, Smart card (PIV), and OpenPGP. That means it’s versatile, working almost anywhere you need it
- PRIMARY & SPARE KEYS: Just like having a spare house key, we recommend buying two YubiKeys - one for daily use and one as a spare. That way you’ll never get locked out of your accounts
Buy an access architecture, not a replacement appliance
A traditional VPN normally creates network-level reachability after a tunnel is established. That model is difficult to constrain in a hybrid environment where applications are spread across data centers, clouds, SaaS services, and branch locations. NIST SP 800-215 describes modern enterprise networks as combinations of Zero Trust Network Access, microsegmentation, software-defined perimeter controls, cloud services, and SASE rather than a single perimeter.
The purchasing question is therefore: How will a verified person, using a verified device, reach one approved resource under a continuously evaluated policy? A product that merely terminates encrypted tunnels can still leave excessive lateral access, weak administration, poor visibility, or slow vulnerability response.
Define the target access model
- Resource scope: Decide whether each policy exposes an individual application, a service group, a network segment, or an entire routed network. Default to the smallest useful scope.
- Trust decision: Specify which identity, device, session, location, risk, and resource signals must be evaluated before and during access.
- Segmentation: Map user groups and workloads to explicit segments. Document which paths are forbidden, not just which are allowed.
- Control plane: Identify where policy is authored, where decisions are made, and how an emergency deny or revoke action propagates.
- Data paths: Describe how traffic reaches on-premises, cloud, branch, and offline resources, including what happens if a cloud control point is unavailable.
Requirements every enterprise replacement should meet
Put these requirements in the request for proposal and require evidence rather than feature names. A demonstration should use your identity provider, endpoint controls, representative applications, and administrative workflows.
Quick wins for a faster PC:
Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Rank #2
- POWERFUL SECURITY KEY: The Security Key C NFC is the essential physical passkey for protecting your digital life from phishing attacks. It ensures only you can access your accounts.
- WORKS WITH 1000+ ACCOUNTS: Compatible with Google, Microsoft, and Apple. A single Security Key C NFC secures 100 of your favorite accounts, including email, password managers, and more.
- FAST & CONVENIENT LOGIN: Plug in your Security Key C NFC via USB-C and tap it, or tap it against your phone (NFC) to authenticate. No batteries, no internet connection, and no extra fees required.
- TRUSTED PASSKEY TECHNOLOGY: Uses the latest passkey standards (FIDO2/WebAuthn & FIDO U2F) but does not support One-Time Passwords. For complex needs, check out the YubiKey 5 Series.
- BUILT TO LAST: Made from tough, waterproof, and crush-resistant materials. Manufactured in Sweden and programmed in the USA with the highest security standards.
| Requirement | What to require in the design | Evidence to request |
|---|---|---|
| Resource-level authorization | Policies bind an authenticated user and approved device to only the applications or services required. Least privilege and explicit segmentation are enforced by default. | Live policy demonstration, application map, denied-path test, and exportable policy model. |
| Phishing-resistant MFA | Remote access and privileged administration require phishing-resistant MFA. Passwordless cryptographic methods, including a FIDO2 security key, must be supported where appropriate. | Authentication-flow test, recovery procedure, administrator enrollment and revocation process. |
| Identity and device signals | Integration with identity, credential, access-management, and endpoint-posture systems allows policy to adapt to user, device, and resource context. | Supported connectors, attribute list, evaluation frequency, fail-open/fail-closed behavior, and audit records. |
| Secure administration | Management uses dedicated or otherwise trusted workstations and networks. Management ACLs are restrictive, unauthenticated protocols are disabled, and infrastructure devices have no unnecessary outbound connectivity. | Reference architecture, administrative-plane packet flow, role matrix, and configuration export. |
| Cryptography and exposure control | Strong key exchange, encryption, and hashing are used. Unused algorithms, protocols, and ports can be disabled. Software-image integrity can be checked against vendor-published hashes when available. | Supported cipher and protocol list, hardening guide, image-verification procedure, and external exposure scan. |
| Visibility and response | Authentication, policy, configuration, and administrative events are detailed enough for detection and investigation. Logs support alerting, retention, export, and incident-response workflows. | Sample events, field dictionary, API or streaming method, retention tiers, alert examples, and time-synchronization requirements. |
| Patch and vulnerability operations | The supplier provides vulnerability notifications, defined patch service-level agreements, emergency mitigations, supported-version policy, and transparent end-of-support dates. | Vulnerability-response policy, notification channels, historical advisory examples, patch cadence, and end-of-support commitments. |
| Deployment fit | Cloud-delivered, on-premises, and hybrid options are assessed against data residency, latency, resiliency, offline and branch needs, and existing identity and endpoint integrations. | Regional service locations, dependency diagram, outage behavior, capacity model, and data-processing description. |
| Migration and rollback | The design supports staged pilots, coexistence with the current path, tested application mappings, break-glass administration, rollback criteria, and an incident-tested cutover. | Runbook, dependency inventory, rollback time objective, break-glass test, and cutover rehearsal results. |
NIST’s zero-trust practice guidance emphasizes identity governance, identity and access management, microsegmentation, SASE, and software-defined-perimeter patterns. Use those concepts to test whether a proposal actually limits access, rather than accepting “zero trust” as a label.
ZTNA, SSE, SASE, or a hardened VPN?
These are architecture choices, not mutually exclusive product SKUs. Compare them against your applications and operating model.
| Option | Access scope | Strengths | Trade-offs and best fit |
|---|---|---|---|
| ZTNA | Usually application- or service-specific rather than network-wide. | Least-privilege access, identity and device policy, reduced lateral movement, and a clearer user-to-application audit trail. | Requires application discovery, connectors or gateways, and careful treatment of non-web and legacy protocols. Strong candidate for workforce access to defined applications. |
| SSE | Security controls delivered from an edge service, commonly for users accessing Internet, SaaS, and private resources. | Combines access, security inspection, policy enforcement, and centralized visibility without requiring every control at a physical perimeter. | Depends on provider reach, service resiliency, traffic-routing design, and integration quality. Evaluate data residency and outage behavior closely. |
| SASE | Combines security services with software-defined wide-area networking and connectivity. | Useful when branches, cloud networks, and users need one policy and connectivity model, with segmentation and centralized operations. | Broader implementation and integration effort. Confirm which functions are native, which are partner services, and how failures are isolated. |
| Hardened traditional VPN | Often network- or tunnel-wide, although segmentation can narrow reach. | Familiar operation and compatibility with site-to-site links, fixed routes, and legacy protocols. | Can preserve excessive network reach and appliance exposure. Accept it only for a defined requirement, with strong cryptography, restricted administration, tight segmentation, and a documented retirement or containment plan. |
CISA and partners urged organizations on June 18, 2024, to move toward more robust solutions such as Zero Trust, SSE, and SASE because they provide greater visibility of network activity. That guidance does not require every organization to remove every VPN tunnel. A narrowly scoped site-to-site link or an application that cannot operate through a newer access method may justify a hardened VPN component.
Rank #3
- POWERFUL SECURITY KEY: The YubiKey 5 NFC is the most versatile physical passkey, protecting your digital life from phishing attacks. It ensures only you can access your accounts
- WORKS WITH 1000+ ACCOUNTS: Compatible with popular accounts like Google, Microsoft, and Apple. A single YubiKey 5 NFC secures 100+ of your favorite accounts, including email, password managers, and more
- FAST & CONVENIENT LOGIN: Plug in your YubiKey 5 NFC via USB and tap it, or tap it against your phone (NFC), to authenticate. No batteries, no internet connection, and no extra fees required
- MOST SECURE PASSKEY: Supports FIDO2/WebAuthn, FIDO U2F, Yubico OTP, OATH-TOTP/HOTP, Smart card (PIV), and OpenPGP. That means it’s versatile, working almost anywhere you need it
- PRIMARY & SPARE KEYS: Just like having a spare house key, we recommend buying two YubiKeys - one for daily use and one as a spare. That way you’ll never get locked out of your accounts
When a VPN still belongs in the design
- Site-to-site connectivity requires stable routed paths and the peer cannot support an application proxy or identity-aware connector.
- A legacy protocol depends on network semantics that a resource-level gateway cannot provide.
- An isolated operational network needs a tightly controlled maintenance tunnel with fixed peers and minimal routes.
For each exception, document the exact systems, ports, identities, routes, cryptographic settings, administrative path, monitoring, and exit condition. “We have legacy applications” is not a sufficient scope statement.
Recommended Free Tools
Deployment and resilience questions to resolve
Distributed enterprises should compare cloud, on-premises, and hybrid delivery using actual traffic and outage scenarios.
Data residency and privacy
Identify where authentication attributes, device posture, policy decisions, logs, and inspected traffic are processed and stored. Separate control-plane metadata from application payloads; they may have different residency obligations. Require deletion, retention, and subprocessor terms that match your regulatory environment.
Rank #4
- POWERFUL SECURITY KEY: The Security Key NFC is the essential physical passkey for protecting your digital life from phishing attacks. It ensures only you can access your accounts.
- WORKS WITH 1000+ ACCOUNTS: Compatible with Google, Microsoft, and Apple. A single Security Key NFC secures 100 of your favorite accounts, including email, password managers, and more.
- FAST & CONVENIENT LOGIN: Plug in your Security Key NFC via USB-A and tap it, or tap it against your phone (NFC) to authenticate. No batteries, no internet connection, and no extra fees required.
- TRUSTED PASSKEY TECHNOLOGY: Uses the latest passkey standards (FIDO2/WebAuthn & FIDO U2F) but does not support One-Time Passwords. For complex needs, check out the YubiKey 5 Series.
- BUILT TO LAST: Made from tough, waterproof, and crush-resistant materials. Manufactured in Sweden and programmed in the USA with the highest security standards.
Latency and user experience
Measure the path from representative users to identity services, policy engines, connectors, and applications. Include users in remote regions and branches. Ask what happens when the nearest point of presence or an identity dependency is unavailable.
Resiliency and offline operation
Define behavior during loss of Internet access, identity-provider outage, connector failure, or cloud control-plane interruption. Decide which already-authorized sessions may continue, how long cached decisions remain valid, and how administrators invoke break-glass access without weakening normal controls.
Branch and private-resource reachability
Map every branch, data center, cloud virtual network, and partner connection. Confirm whether connectors require inbound exposure, how they are updated, and whether a compromised connector can reach more than its assigned resources.
Best Value
- FIDO2 & Passkey Ready: Business-ready and FIDO2 L1 certified. This key is supported by major management suites and is ideal for both individual and enterprise deployment. Works seamlessly with Gmail, Facebook, GitHub, Dropbox, Coinbase, and more.
- Universal Connectivity (USB-A ): Features a built-in USB-A connector—simply unfold the key and plug it into your compatible PC or laptop for seamless authentication on the go.
- Dedicated Manager App: Use the Thetis Manager App for the initial hardware PIN setup. Setting the PIN on the device first ensures a smooth registration process. Once the PIN is configured, you can begin registering the key across your favorite FIDO2-compatible online services.
- Ultra-Durable & Portable: Featuring a rotating metal cover, this key is water, crush, and tamper-resistant. It fits easily on a keychain and requires no batteries or network connectivity.
- Check FIDO2 compatibility before purchase - Known limitations: ID Austria is not supported (requires FIDO2 Level 2). Windows Hello login only works with Windows Enterprise editions that support Entra ID, and NFC is NOT supported.
How to score proposals
Use a weighted scorecard before vendor demonstrations. Weightings should reflect your risk, but the categories below prevent a low price or polished interface from hiding a control gap.
| Category | Questions for evaluators |
|---|---|
| Security architecture | Does policy terminate at the resource boundary? Are segmentation and deny rules explicit? Can a stolen credential reach unrelated systems? |
| Identity and device integration | Are phishing-resistant MFA, lifecycle events, device compliance, risk signals, and privileged workflows supported without custom workarounds? |
| Operations | Can one team investigate an access decision from authentication through resource connection? Are logs complete, searchable, exportable, and retained for the required period? |
| Vulnerability response | How quickly are advisories issued? What is the emergency mitigation path? How long are versions supported, and are end dates published? |
| Resilience | What fails open or closed? How are regional outages, connector failures, certificate expiry, and identity-provider outages handled? |
| Migration effort | Can current and new access paths coexist? How are applications discovered, tested, and rolled back? What skills and ongoing staffing are required? |
| Total cost of ownership | Include licenses, connectors, logging and storage, implementation, identity or endpoint integration, support tiers, training, traffic-related charges, and the cost of running any remaining VPN infrastructure. |
Require a proof of value using at least one Internet-facing application, one private application, one legacy protocol if relevant, a privileged administrator workflow, a noncompliant device, and an identity-provider outage test. Record not only successful access but also the expected denial, alert, and log event for each case.
A staged migration plan that can be reversed
- Inventory access. List users, groups, devices, applications, ports, routes, branches, partners, certificates, service accounts, and current VPN policies. Mark owners and business criticality.
- Classify applications. Separate web, client-server, administrative, machine-to-machine, voice, industrial, and legacy protocols. Identify applications that can use resource-level access and those requiring a temporary tunnel.
- Build the policy model. Define identity groups, device requirements, resource segments, administrator roles, session limits, logging fields, and deny conditions before configuring production.
- Establish the management plane. Create dedicated management workstations or networks, restrictive ACLs, phishing-resistant MFA, break-glass accounts, time synchronization, and an audited change process.
- Pilot low-risk users and applications. Run the new path alongside the existing one. Test normal access, device noncompliance, credential revocation, connector loss, identity-provider failure, and logging.
- Expand by dependency group. Migrate an application and all of its required users, service accounts, and support procedures together. Keep rollback routes available until owners confirm stability.
- Cut over critical services. Schedule a change window, communicate support procedures, verify monitoring and break-glass access, and use explicit rollback criteria such as failed authentication, unacceptable latency, or missing audit events.
- Retire or contain the old gateway. Remove unused rules and certificates, revoke credentials, restrict remaining tunnels to documented exceptions, and monitor for attempts to use decommissioned paths.
The cited guidance does not prescribe one migration timetable. The staged approach above is an operational practice derived from the requirements for least privilege, secure administration, visibility, patching, and resilient deployment.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesAcceptance tests and common failure modes
Test the decision, not just the tunnel
- A valid user on a compliant device reaches the assigned application and no unrelated segment.
- The same user on a noncompliant or unmanaged device is denied or placed in the documented remediation flow.
- Removing a user’s group, device certificate, or session revokes access within the stated policy interval.
- A privileged administrator must use phishing-resistant MFA and a trusted management path.
- Every allow and deny decision contains user, device, resource, policy, time, and source context sufficient for investigation.
- Disabling an unused protocol or port is visible in configuration and confirmed by an external scan.
- Patch installation, image-hash verification where available, configuration backup, and rollback are repeatable by a second operator.
Failure modes to reject
- “Zero trust” with network-wide routes: If a successful login still exposes broad subnets, the architecture has not delivered least privilege.
- MFA without phishing resistance: A one-time code alone does not meet the stronger requirement for remote and privileged access.
- Cloud dependency without an outage plan: A service that cannot explain cached decisions, fail-closed behavior, or break-glass administration is not ready for critical access.
- Logs that cannot leave the platform: Without export and retention controls, investigators may lose the evidence needed after the next incident.
- Unbounded legacy exceptions: Every remaining VPN route should have an owner, a narrow scope, monitoring, and a review or retirement date.
- Unclear support lifecycle: A low initial price is poor value if emergency patches, supported versions, or end-of-support dates are opaque.
Decision rule
Choose ZTNA when the primary problem is workforce access to defined applications and least privilege is the immediate objective. Consider SSE when users need a cloud-delivered security edge for Internet, SaaS, and private-resource access. Consider SASE when branches, cloud networks, and users require an integrated connectivity and security architecture. Retain a traditional VPN only for explicitly documented site-to-site or legacy requirements that cannot yet be served safely another way.
Whatever architecture you select, make phishing-resistant MFA, resource-level authorization, device and identity signals, secure administration, strong cryptography, detailed telemetry, rapid vulnerability response, deployment-fit analysis, and tested rollback contractual requirements. The replacement is successful when a compromised credential, device, connector, or gateway cannot provide more access than the policy permits—and when your team can see, revoke, patch, and recover that access quickly.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
