# OpenStack vs CloudStack: Open Source Cloud Security Features
This article aims to provide a comprehensive comparison of two popular open-source cloud computing platforms, OpenStack and CloudStack, with a focus on their security features.
Introduction
In the ever-evolving landscape of cloud computing, OpenStack and CloudStack have emerged as leading open-source solutions. Both platforms offer a wide range of services and features to build and manage private and public clouds. However, when it comes to security, each platform has its strengths and weaknesses. This comparison will delve into the security features of OpenStack and CloudStack to help you make an informed decision.
OpenStack Security Features
Identity & Access Management (IAM)
OpenStack’s Identity service, Keystone, provides a centralized user management system for the cloud. It allows for the creation of projects, users, and roles, and enforces policy-based access control. Keystone supports multiple authentication methods, including LDAP, RADIUS, and Token-based authentication.
Networking & Security Groups
OpenStack’s Networking service (Neutron) offers a flexible and scalable networking solution. It supports various networking models, including VLAN, GRE, and VXLAN. Security groups, a firewalling mechanism, can be used to control inbound and outbound network traffic at the instance level.
Block Storage Security
OpenStack’s Block Storage service (Cinder) allows for the creation and management of persistent block storage volumes. Volumes can be encrypted at rest using the Encrypted Volumes (EV) feature, ensuring data confidentiality.
Image Inspector
The Image Inspector service, a part of Glance, scans cloud images for potential security vulnerabilities. It checks for known malicious content, outdated packages, and non-compliant configurations, helping to maintain a secure cloud environment.
CloudStack Security Features
Identity & Access Management (IAM)
CloudStack’s IAM is based on Apache WSO2 Identity Server, which provides user management, role-based access control, and single sign-on capabilities. CloudStack does not have a built-in service like Keystone, but it can be integrated with external IAM solutions.
Networking & Security Groups
CloudStack’s networking is handled by the Virtual Router Manager (VRM). It supports VLANs, BGP, and routing policies. Security groups, a firewalling mechanism, can be used to control network traffic at the virtual machine (VM) level.
Block Storage Security
CloudStack’s Block Storage is based on iSCSI, and while it doesn’t support encryption at rest out-of-the-box, it can be achieved using third-party solutions.
Image Scanning
CloudStack does not have a built-in image scanning feature like OpenStack’s Image Inspector. However, users can integrate CloudStack with third-party solutions for image scanning and vulnerability assessment.
Comparison Table
| Features | OpenStack | CloudStack |
|---|---|---|
| IAM | Keystone (built-in) | Apache WSO2 Identity Server (integrated) |
| Networking & Security Groups | Neutron (built-in) | Virtual Router Manager (VRM) |
| Block Storage Security | Cinder with Encrypted Volumes (EV) | iSCSI (third-party encryption solutions available) |
| Image Scanning | Image Inspector (built-in) | Third-party solutions |
Conclusion
Both OpenStack and CloudStack offer robust security features, but each has its unique strengths. OpenStack’s built-in image scanning and encryption at rest for block storage volumes make it a strong choice for security-conscious organizations. On the other hand, CloudStack’s integration with Apache WSO2 Identity Server provides a robust IAM solution, and it offers flexibility in terms of third-party integrations.
Ultimately, the choice between OpenStack and CloudStack will depend on your specific requirements, existing infrastructure, and the skills within your team. It’s essential to thoroughly evaluate both solutions and consider consulting with a cloud expert to make the best decision for your organization.
