Streamline Network Security with Centralized and Automated Network Policy Management

October 4, 2022

In a previous blog post, Securing Your Kubernetes Environments via Network Policies, we discussed the value that network policies bring to Kubernetes environments in terms of isolation and reducing the lateral attack surface area, while also identifying some challenges around operationalizing network policies. These challenges include the following:

Challenges

Integration and standardization of network policies

The operational burden in defining and enforcing network policies across a heterogeneous fleet of clusters can be significant. Lack of centralization and standardization can lead to poor security outcomes.

Role-based access controls

Implementing role-based access controls for network traffic flow visibility and policy creation is extremely difficult. Ideally, access should be restricted based on ownership; application teams can only create network policies and view traffic flows for their namespaces.

Visibility and data retention

For debugging and validation, admins or developers need the ability to check historical network configurations and flows, which currently is burdensome to enable.

Without addressing these challenges, solutions may lead to misconfigurations and other security misses. This post will delve deeper into each of these challenges and explore how Rafay's Kubernetes operations platform can help with governance, access controls, automation, and self-service.

Challenge 1: Integration and standardization of network policies

One of the biggest challenges with Kubernetes is integrating various open-source software and maintaining it across a fleet of clusters. Day 2 operations, such as ensuring that the fleet of clusters adheres to the initially configured security posture, are often overlooked.

Today, there are open-source Container Network Interface (CNI) offerings such as Cilium and Calico. However, managing these offerings involves operational overheads, including installation, upgrades, and compatibility checks.

Rafay offers an integrated solution for network policy management through blueprints, allowing platform admins to automate the addition of CNIs and enforce cluster-wide policies.

Challenge 2: Role-based access Controls

Without fine-tuned access solutions, developers often receive over-privileged access that can lead to misconfigurations and sensitive information leakage. Using Rafay’s network policy management solution, organizations can enforce governance by tying the management of policies and visibility to role-based access controls (RBAC).

Challenge 3: Visibility & Data Retention

Real-time network visibility alone is not sufficient for effective day 2 operations. Historical network flows are necessary to audit access patterns. Current market solutions lag in providing integrated capabilities for historical data access.

Rafay’s network visibility dashboard supplies out-of-the-box access to historical traffic flows without requiring extra setup or maintenance.

Conclusion

Network policies are crucial for Kubernetes governance and security to reduce lateral attack surfaces and protect workloads through isolation. Rafay’s platform allows for scalable management and creation of network policies, enforcing proper access controls while providing real-time and historical insights.