Zero Trust in the Modern IT Landscape
For years, organizations relied on familiar security tools such as network segmentation, VPNs, and firewalls. But the way we work has changed dramatically. We’re more mobile, use more devices, and our business systems are more complex than ever. These changes have also led to increasingly sophisticated cybersecurity threats. To address these challenges, a new approach has become increasingly important: Zero Trust. In this blog, we explain what Zero Trust means, highlight its key elements, and discuss how this approach can help your organization.
What is Zero Trust?
Before we dive in, let’s start with the basics: What is Zero Trust? The Zero Trust security model fundamentally changes the way organizations approach cybersecurity. Instead of relying on the traditional concept of a secure “perimeter,” Zero Trust follows the principle of “never trust, always verify.”
By dynamically linking traffic to an identity rather than to a device or user with fixed rights, you can determine very specifically what is permitted in which context. For example, a user can access the company's HR portal from any device (even a personal device), while …requires a company-managed device.
You stop thinking in terms of networks and IP addresses and start thinking in terms of the actual requirements that an application needs to be used securely.
The four trust areas
Gartner identifies four distinct areas within a Zero Trust framework. These areas build on one another and together form a layered security approach. By addressing each of these areas, organizations implement a fully fledged Zero Trust model
Area 1: Identity of users and devices
The first area revolves entirely around identity: establishing it, and the level of assurance it provides for the rest of the process. The goal is to attach a verified identity and status to the packet streams that leave the source and reach the destination. This enables endpoints to determine for themselves whether traffic is allowed, logged, or blocked, down to the level of specific requests.
This involves not only identifying who the user is, but also determining characteristics such as role, security level, project or team, the device's operating system, patch and update status, antivirus status, and so on.
Area 2: Application governance and logging
The second area focuses on the destination of the traffic: the application. Instead of hosting applications on different platforms within your environment, Zero Trust allows you to create a central service catalog on which routing and security are based. Applications determine for themselves which traffic they accept and which rules are linked to this, although this can also be controlled centrally if desired.
The goal is to create a single source of truth on which network and security policy is based.
Area 3: Enforcement
The third area revolves around security and encryption. Encryption is at the heart of Zero Trust. Everything—from packets to policies—is encrypted and/or signed with cryptographic material. Policies determine the conditions under which traffic is allowed, blocked, or logged. This can be set up centrally or by application administrators themselves.
This makes Zero Trust not only highly secure, but also extremely flexible. The organization can establish overarching guidelines (for example, that systems must be up to date), while application administrators fill in the details.
In addition, policies are evaluated at both the source and the destination. This eliminates the need for centrally hosted appliances to handle traffic and prevents attackers from influencing traffic, as both sides of the connection apply and verify policies.
Area 4: Enrichment
The final area of Zero Trust revolves around insights. This applies to both monitoring and security of the network, devices, and users. Because metrics are collected on all endpoints, they can be brought together centrally to gain insight into traffic, decisions, and other activities such as compliance.
Because this data is collected from all devices, you gain insight from all possible perspectives within the network.
Benefits of decentralized, policy-based security
By focusing on end devices and embedding security and authentication across all Zero Trust domains, you can make better use of end devices and assess security and compliance as early as possible (shift left). This gives both your organization and application administrators control through policy-based governance.
Policies are also much more comprehensive than what a traditional IDS/IPS solution can offer. This is due to the fundamental principle of Zero Trust: there is no implicit trust in the network, and every device must verify its identity and be compliant before it can even connect to the Zero Trust network.
The next steps: threat intelligence, analytics, and automation
But it's not just access control and granular metrics that help modern organizations move forward—Zero Trust also allows you to significantly increase your security level. By using tools that integrate natively with Zero Trust, you can strengthen your security posture and detect and block even more advanced threats than is possible with traditional security and network solutions.
By detecting anomalies in, for example, configuration, browser used, or OS version, you can recognize patterns per user and identify compromised or falsified sessions. Think of it as pattern recognition, but without any manual intervention. It also offers a quick way to immediately block access to sensitive data as soon as a serious security issue is discovered and actively exploited. Instead of requesting—or forcing—users to update their end devices, you can simply block access for users and systems that have not properly mitigated the vulnerability.
What can SUE do for you?
Zero Trust offers many advantages for modern organizations, but implementing it—or even in a proof of concept—can be quite a challenge. That's where SUE's expertise and team come in. We have a large number of engineers and consultants with experience in both traditional networking and security solutions and Zero Trust architectures. They will help your organization transform into a more secure and easier-to-manage network.
Our trusted partners
We partner with Zero Trust providers such as Cloudflare, Wiz, and Aquasec to set up the solution for your organization. We also offer comprehensive training so your team can manage and deploy these solutions with confidence. Contact us for a no-obligation consultation about Zero Trust in your organization.
To learn how SUE secures cloud environments, visit the Cloud Security page. The Cloud Security Guide explains how to set up and maintain a secure cloud environment.
