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7 min read

SASE meaning: what does SASE stand for? link link

Secure Access Service Edge (SASE), pronounced "sassy," is a cloud-based architecture that delivers network and security services meant to protect users, applications, and data.

Secure Access Service Edge (SASE), pronounced “sassy,” is a cloud-based architecture that delivers network and security services meant to protect users, applications, and data. This term was coined by Gartner in 2019 and has quickly risen through the ranks to become one of the top aspirational security concepts of the current decade so far. Given that many users and applications no longer live and operate on a corporate network, access and security measures can’t depend on conventional hardware appliances in the corporate datacenter.

SASE security promises to deliver the necessary networking and security capabilities in the form of cloud-delivered services. Done properly, a SASE model eliminates perimeter-based appliances and legacy solutions. Instead of delivering the traffic to an appliance for security, users connect to the SASE cloud service to safely access and use web services, applications, and data with the consistent enforcement of security policy.

Where is the “edge” in Secure Access Service Edge?

The “edge” in SASE refers to the cloud provider’s global systems that exist on their hardware (data centers and devices). Users access cloud services by logging in and authenticating their identities, from any location, and are passed through this “edge” into the cloud environment.

sase meaning


White Paper: SASE and the Seven Forces Shaping Security Transformation
Blog: A CISOs View of SASE


 

Why is SASE important? link link

SASE is important because it enhances security, improves performance, simplifies network management, provides flexibility and agility, and offers cost efficiency.

Conventional security measures presumed that applications and users would be inside the network perimeter, which is no longer true. Corporate data is moving to the cloud, employees are increasingly working remote, and digital transformation initiatives require IT organizations to be nimble to capitalize on new business opportunities.

As a result, the traditional network perimeter is dissolving, and new models for access controls, data protection, and threat protection are necessary. In light of these changes, organizations are finding that their existing collection of standalone point products such as firewalls, secure web gateway, data loss prevention (DLP), and cloud access security brokers (CASB), are no longer applicable in a cloud-first world.
SASE Gartner predictions

20% of enterprises will adopt SWG, CASB, ZTNA and branch FWaaS by 2023
of enterprises will adopt SWG, CASB, ZTNA and branch FWaaS by 2023
40% of enterprises will develop strategies to adopt SASE by 2024
of enterprises will develop strategies to adopt SASE by 2024

SOURCE: GARTNER REPORT: THE FUTURE OF NETWORK SECURITY IS IN THE CLOUD

 

What is SASE architecture? link link

The SASE architecture integrates various networking and security technologies and services, typically delivered as cloud-based services, into a single platform combining wide area networking (WAN) capabilities and security functions, creating a holistic and scalable approach to network connectivity and protection.

Secure Access Service Edge, or SASE, unifies networking and security services in a cloud-delivered architecture to protect users, applications, and data everywhere. Given that users and applications are no longer on a corporate network, security measures can’t depend on conventional hardware appliances at the network edge.

SASE diagram

There are two sides of SASE architecture: Security and Networking

Instead, SASE solutions promise to deliver the necessary networking and security as cloud-delivered services. Done properly, a SASE model eliminates perimeter-based appliances and legacy solutions. Instead of delivering the traffic to an appliance for security, users connect to the SASE cloud service to safely use applications and data with the consistent enforcement of security policy.

SASE technology and capabilities include link link

A SASE architecture is capable of identifying users and devices, applying policy-based security controls, and delivering secure access to the appropriate applications or data. SASE security makes it possible to provide secure access regardless of where users, data, applications or devices are located.

  • Cloud-native microservices in a single platform architecture
  • Ability to inspect SSL/TLS encrypted traffic at cloud scale
  • Inline proxy capable of decoding cloud and web traffic (Next-Generation Secure Web Gateway/NG SWG)
  • Firewall and intrusion protection for all ports and protocols (Firewall as a Service/FWaaS)
  • Managed cloud service API integration for data-at-rest (Cloud Access Security Broker/CASB)
  • Public cloud IaaS continuous security assessment (Cloud Security Posture Management/CSPM)
  • Advanced data protection for data-in-motion and at-rest (Data Loss Prevention/DLP)
  • Advanced threat protection, including AI/ML, UEBA, sandboxing, etc. (ATP)
  • Threat intelligence sharing and integration with EPP/EDR (Endpoint Protection Platform/Endpoint Detection and Response), SIEM (Security Information and Event Management), and SOAR (Security Orchestration, Automation, and Response)
  • Software-defined perimeter with zero trust network access, replacing legacy VPNs (SDP, ZTNA)
  • Protection for the branch, including support for branch networking initiatives such as SD-WAN (Software-Defined Wide Area Network)
  • Carrier-grade, hyper-scale network infrastructure with a global POP (Point of Presence) footprint

 

What are the major transformations behind SASE architecture?

 

SASE benefits link link

SASE network architecture offers enhanced security, improved performance, simplified management, scalability, cost efficiency, compliance alignment, and future-proofing

A SASE network architecture offers enhanced security, improved performance, simplified management, scalability, cost efficiency, compliance alignment, and future-proofing. By adopting SASE, organizations can establish a flexible, secure, and agile network infrastructure that addresses the demands of the modern digital landscape.

1. Flexibility:
Allows for direct-to-net or direct-to-cloud access from anywhere for easy adoption of new digital business models

2. Cost savings:
Eliminates CapEx for on-premises infrastructure and provides lower, predictable OpEx due to its Security-as-a-Service model

3. Reduced complexity:
Consolidated services into a cloud-delivered model eliminates complex stack of legacy point solutions and simplifies operational effort

4. Increased performance:
Enhances and accelerates access to internet resources via a global network infrastructure optimized for low-latency, high-capacity, and high-availability

5. Zero trust network access:
Provides secure, contextual access to private apps in public/private clouds

6. Threat protection:
Stops cloud and web attacks such as cloud phishing, malware, ransomware, and malicious insiders

7. Data protection:
Protects data everywhere it goes, inside and outside of the organization, including within public clouds as well as between company and person instances of cloud apps

 

What are the four questions to ask when adopting a SASE network link link

1. How does your current web or cloud security give you full visibility and context across all web and cloud traffic?

Consider consolidating your secure web gateway (SWG) and cloud access security broker (CASB). This will provide critical visibility and control for data loss protection (DLP) and advanced threat protection (ATP) defenses that are also cloud-hosted in the same platform. Along with retiring your legacy SWG appliances, migrate to zero trust network access (ZTNA) to replace your legacy VPN appliances to modernize your overall secure access posture.

2. What level of cloud-scale does your current security solution provide?

The majority of cloud traffic is encrypted, and a growing number of attackers are leveraging the cloud to evade traditional network controls. Using cloud-scale SSL/TLS inspection helps you stay on top of the threat landscape.

3. Does your current network support high performance and consistent availability?

Users expect high performance with low latency, because if the SASE is slow, unhappy users will look for ways around your system. In order to deliver great user experience, make sure that your SASE solution is engineered for high performance and located in the places that your users are.

4. How many consoles and policies do you currently have to use to manage your existing security stack?

Many vendors are adapting or virtualizing their software and calling it a cloud-based solution. If it isn’t designed to be a SASE, you may end up with multiple administrative consoles, complex policies that are hard to manage, and time-wasting tools for conducting investigations. Choose a solution that has a single management console, single client, and a single policy engine to streamline operations and effectiveness for network and security teams.

 

SASE vs SSE: what is the difference? link link

SSE successfully modernizes your technology architecture by converging Web Proxy (SWG), ZTNA, CASB, and DLP into one, powerful, high-performing solution.

Now that you understand SASE, let’s touch on what SSE is and why there is so much buzz about it. Security Service Edge (SSE) is the convergence of multiple cloud-based security services as the other half of a Secure Access Service Edge (SASE) architecture. SSE benefits your business through a singular architecture that simplifies your security, reduces risks, offers inline visibility, provides granular control of data, and creates preventative measures through advanced analytics capabilities.

 

 

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Designing a SASE Architecture For Dummies

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