SD-WAN (Software-Defined Wide Area Networking) centralizes the management and control of the network, abstracting the underlying transport mechanisms such as MPLS, broadband, or cellular connections. One of the crucial security benefits of this abstraction and centralization is the ability to implement granular network segmentation.
→ Isolation of Sensitive Data: SD-WAN allows administrators to create distinct virtual networks or segments for different types of traffic. For example, sensitive financial data can be isolated from general internet traffic.
→ Policy Enforcement: Centralized control enables consistent security policies across all segments, ensuring that each segment adheres to specific security requirements.
→ Limiting Lateral Movement: In the event of a security breach, granular segmentation restricts the movement of threats within the network, preventing attackers from easily accessing other parts of the network.
→ Independence from Physical Topology: Since segmentation is managed logically, it remains effective regardless of changes or variations in the physical network infrastructure.
A) Encryption: While SD-WAN can support encryption, stating that it "inherently encrypts all network traffic" is inaccurate. Encryption typically needs to be configured and managed separately.
B) Cost-Effective Path Selection: This is more related to network optimization and cost management rather than a direct security benefit.
D) Automatic Patching: This pertains to device management and maintenance, not the core security advantages provided by SD-WAN's network abstraction and centralized control.
for more > https://www.fieldengineer.com/sd-wan/what-is-sd-wan