Overview
As businesses shift to cloud-based operations and remote work environments, traditional network security models may not always be the best choice to keep up. Instead, many organizations are turning to Secure Access Service Edge (SASE), a transformative approach that combines network and security services into a single cloud-delivered solution.
Let’s explore what SASE is, its key components, why it’s quickly becoming an important cybersecurity tool for modern organizations, and how to implement it effectively.
Understanding SASE: A New Approach to Network Security
Secure Access Service Edge (SASE) is a transformative framework that combines network security functions and wide-area network (WAN) capabilities into a unified cloud service. Pronounced “sassy,” SASE provides a flexible, centralized solution for securing and connecting remote employees, branch offices, and cloud-based resources.
In the past, network security relied heavily on a centralized data center model. All traffic was directed through a central data center where firewalls, intrusion detection systems, and other security tools could be applied.
This approach worked well when employees operated within a secure, controlled network environment, but it falls short in today’s world where employees access corporate resources from various locations. SASE integrates security directly into the cloud, enabling secure, seamless access for users, no matter where they are.
How SASE Works
SASE integrates networking and security functions directly in the cloud, establishing a “secure edge” for all connections. When users access applications or resources, SASE applies security policies in real time, regardless of the user’s location. This approach ensures that all connections are secure and that users enjoy fast, reliable access to the applications they need, wherever they are.
SASE operates by dynamically routing traffic across a network of cloud-based security services, using multiple nodes to enforce security and optimize connectivity. This cloud-native framework enables organizations to deploy a consistent security policy across their entire network, delivering visibility and protection that adapts to each user’s context, from location to device type.
Key Components of SASE
SASE brings together several cutting-edge technologies into a single architecture. Each component has a unique role in supporting secure, reliable connectivity:
Software-Defined Wide Area Network (SD-WAN)
SD-WAN is the backbone of SASE’s networking capabilities. Unlike traditional WANs that rely on dedicated hardware and leased lines, SD-WAN uses software to control traffic routing across various network connections, including broadband, LTE, and MPLS.
With SD-WAN, SASE can dynamically optimize traffic flows to enhance performance and maintain reliability, even across geographically dispersed networks.
Secure Web Gateway (SWG)
A Secure Web Gateway (SWG) acts as a filter for internet-bound traffic, blocking access to malicious websites and filtering out potentially harmful content before it reaches the user. SWGs use URL filtering, anti-malware, and data loss prevention (DLP) techniques to control which sites employees can access, preventing accidental exposure to threats like malware and phishing attacks.
In the SASE model, SWG ensures that all internet-bound traffic from any location passes through this protective filter, reducing the risk of web-based threats.
Cloud Access Security Broker (CASB)
A Cloud Access Security Broker (CASB) acts as an intermediary between cloud applications and users, enforcing security policies and monitoring access. CASB provides visibility into cloud usage, detecting and preventing unauthorized access, data sharing, or suspicious activity. In SASE, CASB strengthens cloud security by enabling secure access to cloud resources.
Zero Trust Network Access (ZTNA)
Zero Trust Network Access (ZTNA) is based on the principle that no one, inside or outside the network, should be trusted by default. Instead, access is granted only after verifying the user’s identity and ensuring they have the right level of permission.
By combining ZTNA with other SASE components, organizations can create a network environment where users only access the resources they need, significantly lowering the attack surface.
Firewall as a Service (FWaaS)
Traditional firewalls, which once required physical hardware and manual configuration, are now available as a cloud-based service through Firewall as a Service (FWaaS). FWaaS provides advanced firewall capabilities at the network’s edge, filtering traffic and blocking unauthorized access to applications.
With FWaaS in place, SASE delivers scalable, distributed firewall protection, allowing organizations to enforce consistent security policies across all locations.
Benefits of SASE for Your Business
There are many benefits of implementing SASE into your business. Here are a few:
Enhanced Security
SASE’s integrated approach strengthens security by consolidating multiple protective measures within one framework. This unification allows organizations to secure all traffic and endpoints from a central platform, eliminating gaps that can arise when using disparate security tools.
Scalability and Flexibility
The cloud-based nature of SASE enables organizations to scale security and connectivity resources as needed, supporting a distributed workforce and dynamic work environments. Whether adding new users or expanding to new regions, SASE adapts easily without requiring significant changes to the infrastructure.
Cost Efficiency
Managing multiple network and security tools separately can be expensive. SASE consolidates these services into a single platform, reducing the need for hardware and streamlining management. By reducing infrastructure and operational costs, SASE makes security more accessible and budget-friendly for growing businesses.
Improved Performance
SASE’s intelligent traffic routing optimizes application performance by reducing latency and ensuring that data takes the fastest available path. By placing security at the edge, closer to end-users, SASE minimizes delays and accelerates access to applications, providing a smooth experience for remote and in-office employees alike.
Why Businesses Are Adopting SASE
From employees working all around the world to the need for more cybersecurity, there are many reasons why businesses are adopting SASE.
Shift to Remote Work
The rise of remote and hybrid workforces has driven demand for flexible, cloud-based security solutions. Traditional VPNs and centralized security models struggle with large numbers of remote users, leading to slow connections and reduced productivity. SASE offers secure access from any location, enabling employees to work efficiently without compromising security.
Enhanced Cloud Security
As more applications migrate to the cloud, organizations require a security framework that can protect cloud-based assets. SASE provides secure access to cloud applications and data, enabling employees to use SaaS tools and other resources safely. With SASE, organizations can protect their data across multiple cloud platforms without sacrificing performance.
Protection Against Cyber Threats
Today’s cyber threats are increasingly sophisticated, targeting vulnerabilities in both network security and user behavior. SASE offers an integrated, multi-layered approach that responds to these evolving threats. By combining identity-based access, real-time threat detection, and dynamic traffic management, SASE provides organizations with the tools needed to address modern cyber risks effectively.
How to Implement SASE in Your Organization
Interested in implementing SASE across your organization? Here are some steps to get started.
Step 1: Assess and Plan
Start by assessing your organization’s current network and security posture. Identify gaps in connectivity, cloud usage, and existing security solutions. Consider how well your current setup supports remote work and whether it can scale to meet future needs. This assessment will help you determine if SASE is a fit and identify priority areas.
Step 2: Choose the Right Provider
Choosing a SASE provider is a critical step, as each vendor offers a unique blend of features and capabilities. Evaluate providers based on factors like ease of integration, scalability, customer support, and compliance with industry standards. The right provider should align with your specific security needs and be capable of growing with your organization.
Step 3: Deploy and Train
Work with your chosen provider to implement SASE seamlessly across your organization and existing infrastructure. Training employees on the basics of SASE, including its benefits and usage, will help encourage user adoption and maximize its effectiveness.
SASE in Action: Real-World Use Cases
Industries from finance to retail are adopting SASE to enhance security and improve performance. Here are a few examples:
- Finance: Financial institutions use SASE to protect against cyber threats and secure remote access to sensitive financial data, enabling employees to work safely from any location.
- Healthcare: SASE helps healthcare organizations maintain data privacy and security by controlling access to patient records and ensuring compliance with data protection regulations.
- Retail: Retailers leverage SASE to manage network traffic and secure transactions, especially across multiple store locations, providing customers with a safe and efficient shopping experience.
Frequently Asked Questions about SASE
To help you make the best decision for your organization, here are answers to some common questions about SASE:
How much does it cost to implement SASE?
Costs vary widely, depending on the provider, scale of deployment, and specific features.
Is SASE compatible with legacy infrastructure?
Many SASE solutions are designed to integrate with legacy systems, though compatibility may vary by provider.
How long does deployment take?
Deployment time depends on the size and complexity of the organization but can range from weeks to several months.
Glossary of Terms
- SD-WAN (Software-Defined Wide Area Network): Virtualized WAN architecture for flexible, secure connectivity.
- SWG (Secure Web Gateway): Gateway that filters web traffic, blocking malicious content.
- CASB (Cloud Access Security Broker): Security enforcement point between cloud services and users.
- ZTNA (Zero Trust Network Access): Identity-focused security model to control resource access.
- FWaaS (Firewall as a Service): Cloud-based firewall that protects network entry points.
SASE is a key tool for rapidly evolving organizations because it offers secure, high-performance connectivity that supports remote work, cloud adoption, and enhanced security. By combining essential security and networking services into a single, adaptable platform, SASE addresses the demands of modern cybersecurity and enables businesses to thrive securely in a cloud-first world.
Venafi is dedicated to helping you stay ahead in cybersecurity innovations like SASE, supporting your journey to secure, efficient, and flexible network security. Talk to an expert today to learn more.