How to isolate traffic in east-west traffic control?

To isolate traffic in east-west traffic control, you can use network segmentation, micro-segmentation, and software-defined networking (SDN) techniques. These methods ensure that traffic between workloads within a data center or cloud environment is isolated and secure.

1. Network Segmentation: Divide the network into smaller, isolated segments using VLANs or subnets. This limits the scope of traffic and reduces the attack surface.

   • Example: Place web servers in one VLAN and database servers in another, allowing only necessary communication between them.

2. Micro-Segmentation: Apply fine-grained security policies at the workload level, controlling traffic between individual applications or containers.

   • Example: Use Kubernetes network policies to restrict pod-to-pod communication based on labels, ensuring only authorized services interact.

3. Software-Defined Networking (SDN): Dynamically manage network policies and traffic flows through centralized controllers.

   • Example: Implement SDN solutions like Tencent Cloud’s Virtual Private Cloud (VPC) with security groups and network ACLs to enforce east-west traffic rules.

For cloud environments, Tencent Cloud provides VPC, Security Groups, and Network ACLs to isolate east-west traffic effectively. Additionally, Tencent Cloud Container Service supports Kubernetes network policies for micro-segmentation.