Tag Archive for: ztna


Abstract image of SASE Secure Access Service Edge network security

SASE stands for Secure Access Service Edge. It is a comprehensive solution that combines network security and connectivity in a unified cloud-native architecture. SASE removes the legacy part of network security and shifts to a more dynamic, modern, and flexible security system.

In this article, I explain why businesses should migrate from traditional firewalling to SASE. Find out why SASE, in my view, is the future of network security.

Cloud-Centric Architecture:

SASE represents a paradigm shift from hardware-centric traditional firewalling based on what “tin” in your network to cloud-centric security. Unlike traditional firewalling, which relies on on-premises appliances. This networking system delivers security services directly to users, regardless of location. Whether in the office, at home, or at the local Starbucks, the cloud-native approach ensures scalability, agility, and global reach. This allows organisations to adapt seamlessly to evolving threats and business requirements.

Zero Trust Security Model And SASE:

SASE embraces the zero-trust security model, which assumes that no entity, inside or outside the network, should be trusted by default. Authentication/ authorisation of users and devices grants access to applications and resources. In this way, SASE minimises the risk of unauthorised access and lateral movement within the network. This granular approach to security enhances protection against insider threats and external cyberattacks, bolstering overall defence posture. Now, don’t be fooled into thinking that all Zero Trust is SASE! Many vendors use “Zero Trust” to define their SD-WAN or legacy products to compete with SASE products.

Converged Security Services:

One of the key advantages of SASE is its ability to converge multiple security functions into a single platform. Unlike traditional firewalling, SASE integrates these functionalities into a unified architecture. Historically, the system required deploying disparate security solutions such as VPNs, firewalls, secure web gateways, and intrusion detection systems.

This consolidation streamlines management, reduces complexity, and lowers operational costs, enabling organisations to achieve greater efficiency without compromising security.

What is SASE?


Additional benefits of adopting SASE include:

Optimised Performance and User Experience:  SASE leverages a distributed architecture with points of presence (PoPs) strategically located around the globe. By routing traffic through the nearest PoP, SASE minimises latency, optimises performance and enhances the user experience. Additionally, SASE employs advanced traffic steering and optimisation techniques to prioritise critical applications to ensure consistent performance across diverse network environments.

Dynamic Policy Enforcement: Traditional firewalling relies on static rule-based policies that are often prone to misconfigurations. SASE adopts a dynamic policy enforcement approach based on contextual factors such as user identity, device posture, location, and application sensitivity. This contextual awareness enables adaptive access controls that dynamically adjust security policies in real time. This gives organisations greater flexibility and responsiveness to evolving threats or business needs.

Comprehensive Threat Protection: SASE combines essential security services such as firewalling, secure web gateways, intrusion prevention, data loss prevention, and malware detection into a unified platform. By integrating these capabilities with advanced threat intelligence and machine learning-driven analytics, the business gains a greater ability to operate in the safest environment. Lastly, SASE delivers multi-layered protection against a wide range of cyber threats, including malware, ransomware, phishing, and zero-day exploits.

In conclusion, SASE represents a quantum leap forward in network security, offering a transformative approach that addresses the challenges of the modern digital age. By embracing cloud-native architecture, zero-trust security principles, converged security services, optimised performance, dynamic policy enforcement, scalability and comprehensive threat protection, organisations can future-proof their networks and empower their workforce to thrive in an increasingly interconnected world.

If you want to talk to one of our experts about how we can help your business secure itself using SASE, please call 01235 433900 or email [email protected]. If you want to speak to me directly, you can contact me via DM or at [email protected].


Did you enjoy this article? Why not read another of James’ blogs…
The True Cost Of Migrating On-Premise Infrastructure To The Cloud

An abstract image depicting the cost of migrating on-premise infrastructure to the cloud.


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