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Cloud definitions you‘ve been struggling pretending to understand...

Cloud definitions you‘ve been struggling pretending to understand. …and some of their security implications. Jack Daniel , CCSK, CISSP, MVP Enterprise Security Product Manager, Tenable Network Security. Definitions. Words have meaning, professionals need to understand them.

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Cloud definitions you‘ve been struggling pretending to understand...

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  1. Cloud definitions you‘ve been struggling pretending to understand... …and some of their security implications Jack Daniel, CCSK, CISSP, MVP Enterprise Security Product Manager, Tenable Network Security

  2. Definitions • Words have meaning, professionals need to understand them. • We need to understand that the public, end-users, and the media will get things wrong, and not worry about that. • Not much, anyway. • And please don’t refer to “the cloud”. • There isn’t just one, so “the” cloud is wrong. • (I know we’ve lost this battle, but I try)

  3. What do we mean by “cloud security”? • Securing data in a cloud environment? • We will talk about this. • Securing a cloud environment? • That’s out of scope for this talk. And for most people. • Using a cloud service for security? • You are probably already doing this for anti-virus, web or email security. • We went through a similar confusion with “virtual security”. • Who am I kidding? We’re still going through it.

  4. Who defines“cloud computing”? A lot of folks claim to, but I’ll stick with: • NIST, National Institute of Standards and Technology • Their Definition of cloud computing and related terminology is good and concise, cited frequently in this deck • CSA, Cloud Security Alliance

  5. NIST definition ofcloud computing Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. This cloud model promotes availability and is composed of five essential characteristics, three service models, and four deployment models.

  6. NIST definition ofcloud computing …a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources…

  7. NIST definition ofcloud computing …and is composed of: • five essential characteristics • three service models • and four deployment models.

  8. Alternate definition ofcloud computing Anything on the Internet.

  9. Service Models • Software as a Service (SaaS) • Platform as a Service (PaaS) • Infrastructure as a Service (IaaS)

  10. Software as a Service (SaaS) …use the provider’s applications running on a cloud infrastructure…

  11. Isn’t this just ASP? It is an evolution of Application Service Provider offerings, but SaaS is different. How many ASPs offered: • Near instant provisioning? • Global scalability? • Data portability? • REAL cost savings?

  12. SaaS/PaaS/IaaS Matrix

  13. SaaS/PaaS/IaaS Matrix

  14. Platform as a Service (PaaS) …deploy onto the cloud infrastructure consumer-created or acquired applications* *created using programming languages and tools supported by the provider…

  15. SaaS/PaaS/IaaS Matrix

  16. Infrastructure as a Service (IaaS) …provision processing, storage, networks, and other fundamental computing resources…

  17. Infrastructure as a Service (IaaS) …control over operating systems, storage, deployed applications, and possibly limited control of select networking components (e.g., host firewalls).

  18. SaaS/PaaS/IaaS Matrix

  19. SaaS/PaaS/IaaS Matrix

  20. Anything as a Service? • Many more *aaS acronyms exist. • C: Compute • N: Networking • S: Storage (but we already have another SaaS…) • Anything you can imagine • And some things you can’t

  21. Deployment Models • Public cloud* • Private cloud* • Community cloud • Hybrid cloud *and variants such as VPC, Virtual Private Cloud

  22. Public Cloud The cloud infrastructure is made available to the general public or a large industry group and is owned by an organization selling cloud services.

  23. Private Cloud The cloud infrastructure is operated solely for an organization. • It may be managed by the organization or a third party. • It may exist on premise or off premise.

  24. Community Cloud Is shared by several organizations and supports a specific community that has shared concerns. • Mission, security requirements, policy, and compliance considerations, etc. • It may be managed by the organizations or a third party. • It may exist on premise or off premise.

  25. Hybrid Cloud …composition of two or more clouds… that remain unique entities but are bound together by… technology that enables data and application portability

  26. * Virtual Private Cloud Not part of the NIST definition, but real. Created by isolating and securing Public Cloud facilities into a Private Cloud configuration.

  27. Characteristics • On-demand self-service • Broad network access • Resource pooling • Rapid elasticity • Measured Service

  28. On-demand self-service A consumer can unilaterally provision computing capabilities, such as server time and network storage, as needed automatically without requiring human interaction with each service’s provider.

  29. Broad network access Capabilities are available over the network and accessed through standard mechanisms…

  30. Resource pooling …resources are pooled to serve multiple consumers using a multi-tenant model…

  31. Who else is in the pool?

  32. Sharing the locker room, too

  33. Resource pooling …customer generally has no control or knowledge over the exact location of the provided resources…

  34. Resource pooling* *This is starting to fade as some providers begin offering dedicated hardware for certain tasks, but resource pooling remains a key cloud concept.

  35. Rapid elasticity Capabilities can be rapidly and elastically provisioned, in some cases automatically...

  36. Rapid elasticity …the capabilities available for provisioning often appear to be unlimited and can be purchased in any quantity at any time.

  37. Rapidelasticity

  38. Measured service Cloud systems automatically control and optimize resource use by leveraging a metering capability…

  39. Actors (per NIST) • Cloud • Consumer • Provider • Auditor • Broker • Carrier

  40. Stray definitions CDN: Content Delivery Network Cloudburst*: Either a collapse of cloud computing due to high demand, or rapid expansion to meet demand. COA: Cloud-Oriented Architecture CSA: Cloud Service Architecture

  41. Network visibility Network visibility is tricky with virtualization; is it even possible in a cloud? • Where do you put the network tap?

  42. Availability What if you are off the Internet, even briefly? • Local copies mean synchronization and reconciliation.

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