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Goldilock TruAirgap™ is a commercial network access control tool by Goldilock. HOPZERO Sphere of Trust is a commercial network access control tool by HOPZERO. Compare features, ratings, integrations, and community reviews side by side to find the best network access control fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Enterprise and mid-market teams protecting critical infrastructure or handling high-stakes third-party access will value Goldilock TruAirgap™ for its physical, out-of-band isolation that survives network compromise. The 12-port Layer 1 switching with non-IP management and SMS-based authentication means an attacker controlling your production network cannot flip a port without a separate, parallel command channel. The tool strengthens PR.IR capabilities by design; it's weak on RS.MI, so pair it with incident response automation rather than expecting TruAirgap™ to contain lateral movement on its own. Skip this if your threats are primarily application-layer or you lack dedicated infrastructure staff to manage per-port scheduling.
Mid-market and enterprise security teams managing hybrid infrastructure will get immediate value from HOPZERO Sphere of Trust because it enforces network containment without requiring endpoint agents or VLAN redesigns, letting you segment at the packet level across on-premises and cloud simultaneously. The switch port policy injection capability means enforcement happens at network edges, not dependent on agent adoption timelines. This tool prioritizes active containment and anomaly detection over incident recovery, so it's not the right fit for organizations still building foundational SIEM pipelines or those needing deep forensic replay capabilities after compromise.
Hardware appliance for remote, out-of-band physical network isolation.
Network containment tool using TTL/hop limits to restrict data travel distance.
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Common questions about comparing Goldilock TruAirgap™ vs HOPZERO Sphere of Trust for your network access control needs.
Goldilock TruAirgap™: Hardware appliance for remote, out-of-band physical network isolation. built by Goldilock. headquartered in United Kingdom. Core capabilities include Remote port-level connect/disconnect via out-of-band SMS commands, 12-port OSI Layer 1 Ethernet switching with up to 10Gbps per port pair, Non-IP out-of-band management interface accessible via web browser..
HOPZERO Sphere of Trust: Network containment tool using TTL/hop limits to restrict data travel distance. built by HOPZERO. headquartered in United States. Core capabilities include TTL-based packet lifetime containment — restricts how far packets travel by setting and enforcing TTL values, Network geo-fencing — prevents data from leaving defined network regions or cloud zones, Application tethering — confines applications to only their approved network resources..
Both serve the Network Access Control market but differ in approach, feature depth, and target audience.
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