End 2 End Zero Trust Network Security Framework...vEliminate Network Trust vExternal and internal...

Philip WongPrincipal Solution ArchitectCisco Greater China

End 2 End Zero Trust Network Security Framework

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• Trends and Challenges

• A Practical Zero Trust Approach

• Use Case

• Call for Collaboration

Agenda

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Shift in IT LandscapeUsers, devices and apps are everywhere

Evolving Perimeter

Remote Users

Personal &Mobile Devices

IOT Devices

CloudApplications

HybridInfrastructure

CloudInfrastructure

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Traditional Security is like a castle

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What about“Least-Privilege Access”(i.e. grant access, but make a very specific)

üFocus on data protection, not on attacksüAssumes all environments are hostile and breachedüNo access until user + device is proven “trusted”

üAuthentication not equal to Authorization

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TODAY2004 2010 2014 2017Jericho Forum ZT BeyondCorp CARTA & ZTX ZTA

De-perimeterisationAn international group of CISOs and Vendors

Focus on solving “de-perimeterisation” problem

Early output calling for “the need for trust”

Multiple Models EmergeForrester coined Zero Trust.

Google published their ZT solution as BeyondCorp.

Forrester expands to Zero Trust eXtended.

Gartner named their model Continuous Adaptive Risk and Trust Assessment.

GeneralizedThe industry has largely accepted Zero Trust Architecture as the general term.

A brief history of Zero Trust

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Zero TrustArchitectural “Pillars”

vEliminate Network Trust

vExternal and internal threats exist at all times

vEvery user, device, app and network flow is authenticated and authorized

vPolicies-based and must be dynamic; postures calculated from as many sources as possible

vConstant logging, monitoring and re-scoring

vAutomation is key to build and operate a ZT architecture

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Cisco Zero Trust Approach

v Multi-factors of User Identity

v Device context and Identity

v Device posture & health

v Location

v Relevant attributes & contect

“Least Privilege Access” to:

v Network

v Applications

v Resources

v Users & Devices

v Original tenets used to

establish trusts still true?

v Threat Traffic?

v Behavior baselining

v Malicious or anomalous

actions?

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Sample Zero Trust Architecture

Control Plane

Data Plane

Policies Establishment

Polices Enforcement

Workload / AppInventory

DeviceInventory

UserInventory

Policy Information Point (PiP) Policy Administration Point (PaP)Policy Decision Point (PdP)

Policy Information Point (PiP)

ZT Policy Engine Trust EngineOtherSources

LegacyApp

Endpoint Network EquipmentIPS, FW

App

LegacyApp

LegacyApp

Internet

SaaS

SaaS

Policy Enforcement Point (PEP)

Feedback Loop

CLOUDs

On-Premise

Network

Applications

Mode 1

Mode 2

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Zero Trust Use Case Scenarios

Workload / AppInventory

DeviceInventory

UserInventory

WORKFORCE WORKLOAD WORKPLACE

DeviceInventory

UserInventory

+ Network / Location Context

Policies Policies

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Ø“No more network centric authentication”

ØShifting to “a serverless world” ØApplication Services relationship @uto-discovery

ØConstantly Monitor flows ØApply Machine Learning, baselining activities, identify anomalous, …ØEstablish and Simulate Trust PoliciesØMulti-domain enforcement

ØAgentsØPolicy-based networkØ3rd party OPEN integration

WorkloadWORKLOAD

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• Mode 1 Applications transition to Micro-

Services

• Safeguard Interaction between Mode 1 and

Mode 2

• Securely expose Mode 2 Services to ultimate

consumers

WORKLOAD

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Embracing Other contextual data

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Expand to a much wider scope with context data exchange

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• Publish/Subscribe Model with Bi-directional Context Sharing and

Consuming Control

Cisco Platform Exchange Grid (pxGrid)

IOT Ecosystem partner (e.g. MRI)

Policy Enforcement Point

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• Platform Exchange for context sharing and innovative integration between• IOT Devices• Thin Applications

• Further information• Cisco Zero Trust

• https://www.cisco.com/c/en_hk/products/security/zero-trust.html• pxGrid White Paper

• https://pubhub.devnetcloud.com/media/pxgrid-api/docs/overview/Cisco_pxGrid_White_Paper_09192018_JE.pdf• https://developer.cisco.com/site/pxgrid/

Call for Collaboration