SASE (Secure Access Service Edge) is a network and security concept coined by Gartner in 2019. It combines network and security functions in a cloud-based architecture to meet the requirements of modern, networked companies. SASE aims to provide flexible, secure and efficient connectivity for users, devices and applications, no matter where they are located.
Secure Access Service Edge (SASE) is a concept that combines the functions of networks and security in a single, cloud-based architecture. The main components of SASE are designed to work together seamlessly to provide organizations with a flexible, scalable and secure network environment.
SD-WAN (Software-Defined Wide Area Network)
SD-WAN is a technology-based network architecture that enables companies to intelligently control data traffic across different network paths (such as MPLS, LTE, broadband). It optimizes network performance through dynamic routing based on current network conditions, such as latency or bandwidth, and ensures that applications always run over the best available path. SD-WAN offers high flexibility and efficiency, especially in distributed network environments.
Firewall as a Service (FWaaS)
FWaaS is a cloud-based firewall that monitors and protects all of a company’s inbound and outbound data traffic. It offers all the traditional features of a hardware firewall, including packet filtering, intrusion prevention and monitoring, but without the need for physical devices. FWaaS is fully integrated into the cloud, allowing for easy scalability and centralized management.
Secure Web Gateway (SWG)
A Secure Web Gateway protects users from web-based threats by scanning web traffic for potentially dangerous content and blocking access to unsafe websites. SWG allows organizations to set policies that restrict access to certain websites and protects against threats such as malware, phishing and unwanted content.
Zero Trust Network Access (ZTNA)
ZTNA is a security model that automatically considers any user or device inside or outside the network untrustworthy. Instead, access to applications and data is only granted after strict identity verification and continuous monitoring. ZTNA enables granular access controls based on the principle of “least privilege”, minimizing the risk of insider threats and unauthorized access.
Cloud Access Security Broker (CASB)
CASB is a security solution that monitors and controls access to cloud services and applications. It ensures that data security, compliance and threat protection policies are adhered to in the cloud. CASB offers features such as data loss prevention (DLP), encryption and threat detection that are specifically tailored to the use of cloud services. This is particularly important as more and more companies move their IT infrastructure and applications to the cloud.
DNS protection (Domain Name System)
DNS protection is an additional security component that monitors and filters data traffic at DNS level. By inspecting and filtering DNS requests, this component protects against threats such as phishing and malware, which are often spread via malicious domains. DNS protection can help detect and prevent attacks before they reach the corporate network.
Data Loss Prevention (DLP)
Data Loss Prevention (DLP) is an important component of SASE that aims to prevent unauthorized access to and loss of confidential data. DLP tools analyze data traffic and identify potential risks to sensitive information, such as personal data or company secrets. They enforce policies to ensure that confidential data is only shared with authorized recipients, preventing data leaks and unwanted disclosures.
The introduction of Secure Access Service Edge (SASE) offers companies a variety of benefits that can significantly increase both the efficiency and security of their IT infrastructure.
Improved security
SASE integrates multiple security services, including firewalls, secure web gateways, Cloud Access Security Broker (CASB) and Zero Trust Network Access (ZTNA), into a single, cloud-based platform. This enables a comprehensive security architecture that detects and defends against threats in real time. SASE is based on the Zero Trust principle, where all access, regardless of location or identity, must be authenticated and authorized. This minimizes the risk of unauthorized access and insider threats.
Flexibility and scalability
Because SASE is cloud-based, it can be easily adapted to a company’s needs, such as by adding new locations, users or capacities. This makes it particularly suitable for companies that need to adapt quickly to market changes. SASE provides secure and reliable connections for employees, whether they are working in the office, at home, or on the move. This is especially important for maintaining security levels as more people work remotely.
Optimized network performance
SASE uses Software-Defined Wide Area Network (SD-WAN) to optimize traffic across multiple paths. This improves network performance, reduces latency and ensures that critical applications are prioritized. By optimizing network paths and reducing bottlenecks, SASE ensures consistent and high-quality performance, regardless of user location.
Cost efficiency
As SASE is cloud-based, companies can dispense with expensive hardware investments and their maintenance. The costs are switched to a subscription-based model that can be scaled as required.
Compliance and risk management
SASE provides integrated compliance monitoring and enforcement tools, making it easier to comply with legal and industry regulations. Organizations gain comprehensive visibility into network traffic, enabling them to better manage risk and respond to security incidents early.
Future-proof
SASE is designed for future network and security developments. As it is a cloud-based solution, it can be continuously updated and expanded to meet the latest threats and technological requirements. SASE is therefore ideal for organizations looking to drive their digital transformation as it provides a flexible and secure foundation for cloud migrations, remote working, and the adoption of new technologies.
