Best Software-Defined Perimeter (SDP) Software for Linux

GoodAccess is a cybersecurity platform (SASE/SSE) that empowers medium-sized enterprises to easily implement Zero Trust Architecture (ZTA) in their infrastructure, regardless of its complexity or scale. By leveraging a Low-Code/No-Code approach, GoodAccess delivers a hardware-free, rapid deployment solution within hours or days, allowing companies to enhance their security without the need for in-house IT experts. Our platform ensures seamless integration with modern SaaS/cloud applications as well as legacy systems, protecting critical assets for remote and hybrid workforces. GoodAccess serves businesses with 50-5000 employees across diverse industries, particularly those adopting multi-cloud and SaaS environments. Start your 14-day full-featured free trial.

As AI-driven vulnerability and exploitation accelerate attack velocity to machine speed, Forescout is a foundational cyber defense layer that allows organizations to segment and isolate compromised systems, block lateral movement, and automate response across IT, OT, IoT, and IoMT environments. The Forescout Vistaro™ platform, powered by agentic AI and enhanced with Vedere Labs threat intelligence, delivers a Universal Zero Trust Network Access (UZTNA) architecture that integrates seamlessly with 180+ security and IT products. With Forescout Vistaro, organizations get comprehensive inventory and classification of both managed and unmanaged assets, continuous exposure management, and real-time protection including dynamic network segmentation and automated threat response.

Big Network securely and simply connects networks and services between people, places, clouds and devices anywhere. We combine easy button simplicity for mesh-vpn, sdwan and cloud services. Big Network also provides broadband services, a cloud marketplace and a partner ecosystem. 83% of businesses will continue operating with hybrid workforces according to Accenture. Big Network provides the tools to securely and simply connect networks and services between users, teams, offices, homes, clouds and devices anywhere. Private networking is hard, complex and expensive. There is a multitude of legacy technologies to choose from, each driven by an ecosystem of hardware and software vendors and their objectives.

Trustgrid is the SD-WAN for application providers. The Trustgrid platform uniquely addresses the needs of SaaS application providers who rely on remote systems. By combining an SD-WAN 2.0, edge computing, and zero trust remote access into a single platform we allow software providers to manage and support distributed application environments from the cloud to the edge. With the Trustgrid platform you can: • Build cloud to on-premise networks at scale • Manage and support 100s of networks from a single pane of glass • Control on-premise apps and appliances as if they were in the cloud • Run and support Docker containers in any cloud or on-premise • Provide your support teams secure access to edge application environments Simplify connectivity, enhance security, and guarantee network availability with Trustgrid.

DxOdyssey is lightweight software built on patented technology that enables you to create highly available application-level micro-tunnels across any mix of locations and platforms. And it does so more easily, more securely, and more discreetly than any other solution on the market. Using DxOdyssey puts you on a path to zero trust security and helps networking and security admins secure multi-site & multi-cloud operations. The network perimeter has evolved. And DxOdyssey’s unVPN technology is designed with this in mind. Old VPN and direct link approaches are cumbersome to maintain and open up the entire network to lateral movement. DxOdyssey takes a more secure approach, giving users app-level access rather than network-level access, reducing attack surface. And it does all of this with the most secure and performant approach to create a Software Defined Perimeter (SDP) to grant connectivity to distributed apps and clients running across multiple sites, clouds, and domains.

NetFoundry is an identity-first Zero Trust workload connectivity platform designed to secure connections between applications, APIs, machines, AI agents, sites, cloud environments, and operational technology systems. Built on the OpenZiti open source platform, it creates private, policy-controlled connections without relying on traditional inbound ports, VPN tunnels, or IP-based trust. Each workload receives a cryptographic identity, and connections are established only after mutual authentication and identity-based policy authorization. NetFoundry supports use cases including AI security, microsegmentation, site-to-site connectivity, API security, OT and IoT connectivity, and embedded Zero Trust for solution providers. Its outbound-only architecture helps reduce attack surface, limit lateral movement, and simplify connectivity across heterogeneous networks with overlapping address spaces.