SASE, or Secure Access Service Edge, is a modern approach to network security that combines networking and security functions into a single, cloud-based service.
Think of it this way: traditionally, businesses relied on a central data center for security, like a castle with a moat. All data and applications were locked down there, with security focused on who could enter.
SASE flips this model. Security functions like firewalls and secure web gateways are delivered from the cloud, closer to users and applications wherever they are. This allows for tighter control and better visibility into network traffic.
SASE Architecture: Security Delivered Like a Cloud Utility
SASE architecture is all about providing a unified experience for network connectivity and security through the cloud:
- Cloud-Native: SASE leverages the cloud’s strengths like scalability, flexibility, and global reach.
- SD-WAN Integration: Software-Defined Wide Area Network (SD-WAN) is built-in for optimized routing and application performance.
- Security Services Delivered: SASE integrates various security functions like:
- Secure Web Gateway (SWG): Filters web traffic for malicious content.
- Cloud Access Security Broker (CASB): Manages and secures cloud applications.
- Firewall as a Service (FWaaS): Inspects and controls network traffic.
- Zero Trust Network Access (ZTNA): Provides granular access control based on user identity and device.
Benefits of SASE Architecture: Security and Simplicity
- Simplified Management: One cloud platform for both networking and security reduces complexity.
- Enhanced Security: Consistent security policies are enforced across the entire network.
- Improved User Experience: Optimized traffic routing ensures smooth application access for remote users.
- Greater Scalability: The cloud-based architecture easily adapts to your growing business needs.
How SASE Works in Action:
Imagine a company with branch offices and remote workers. Traditionally, all traffic would be sent back to a central data center for security checks, causing delays and bottlenecks.
SASE places security functions closer to users and applications, at geographically distributed cloud points. Traffic is inspected and filtered locally, improving performance and security.der figure, slashed at the man who gripped her arm with a whip she held in her disengaged hand.
