Examkingdom's preparation material includes the most excellent features, prepared by the same dedicated experts who have come together to offer an integrated solution. We provide the most excellent and simple method to pass your certification exams on the first attempt "GUARANTEED"

Whether you want to improve your skills, expertise or career growth, with Examkingdom's training and certification resources help you achieve your goals. Our exams files feature hands-on tasks and real-world scenarios; in just a matter of days, you'll be more productive and embracing new technology standards. Our online resources and events enable you to focus on learning just what you want on your timeframe. You get access to every exams files and there continuously update our study materials; these exam updates are supplied free of charge to our valued customers. Get the best 400-251 exam Training; as you study from our exam-files "Best Materials Great Results"

400-251 Exam + Online / Offline and Android Testing Engine & 4500+ other exams included
$50 - $25 (you save $25)
Buy Now

400-251 CCIE Security

Exam Number 400-251 CCIE Security
Associated Certifications CCIE Security
Duration 120 minutes (90 - 110 questions)

The written exam validates experts who have the knowledge and skills to architect, engineer, implement, troubleshoot, and support the full suite of Cisco security technologies and solutions using the latest industry best practices to secure systems and environments against modern security risks, threats, vulnerabilities, and requirements.

Topics include network functionality and security-related concepts and best practices, as well as Cisco network security products, solutions, and technologies in areas such as next generation intrusion prevention, next generation firewalls, identity services, policy management, device hardening, and malware protection.

The written exam utilizes the unified exam topics which includes emerging technologies, such as Cloud, Network Programmability (SDN), and Internet of Things (IoT).

The CCIE Security Version 5.0 exam unifies written and lab exam topics documents into a unique curriculum, while explicitly disclosing which domains pertain to which exam, and the relative weight of each domain.

The Cisco CCIE Security Written Exam (400-251) version 5.0 is a two-hour test with 90–110 questions that validate professionals who have the expertise to describe, design, implement, operate, and troubleshoot complex security technologies and solutions. Candidates must understand the requirements of network security, how different components interoperate, and translate it into the device configurations. The exam is closed book and no outside reference materials are allowed.

The Cisco CCIE Security Lab Exam version 5.0 is an eight-hour, hands-on exam that requires a candidate to plan, design, implement, operate, and troubleshoot complex security scenarios for a given specification. Knowledge of troubleshooting is an important skill and candidates are expected to diagnose and solve issues as part of the CCIE lab exam.

The following topics are general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.

1.0 Perimeter Security and Intrusion Prevention
Written 21%
labs 23%

1.1 Describe, implement, and troubleshoot HA features on Cisco ASA and Cisco FirePOWER Threat Defense (FTD)

1.2 Describe, implement, and troubleshoot clustering on Cisco ASA and Cisco FTD

1.3 Describe, implement, troubleshoot, and secure routing protocols on Cisco ASA and Cisco FTD

1.4 Describe, implement, and troubleshoot different deployment modes such as routed, transparent, single, and multicontext on Cisco ASA and Cisco FTD

1.5 Describe, implement, and troubleshoot firewall features such as NAT (v4,v6), PAT, application inspection, traffic zones, policy-based routing, traffic redirection to service modules, and identity firewall on Cisco ASA and Cisco FTD

1.6 Describe, implement, and troubleshoot IOS security features such as Zone-Based Firewall (ZBF), application layer inspection, NAT (v4,v6), PAT and TCP intercept on Cisco IOS/IOS-XE

1.7 Describe, implement, optimize, and troubleshoot policies and rules for traffic control on Cisco ASA, Cisco FirePOWER and Cisco FTD

1.8 Describe, implement, and troubleshoot Cisco Firepower Management Center (FMC) features such as alerting, logging, and reporting

1.9 Describe, implement, and troubleshoot correlation and remediation rules on Cisco FMC

1.10 Describe, implement, and troubleshoot Cisco FirePOWER and Cisco FTD deployment such as in-line, passive, and TAP modes

1.11 Describe, implement, and troubleshoot Next Generation Firewall (NGFW) features such as SSL inspection, user identity, geolocation, and AVC (Firepower appliance)

1.12 Describe, detect, and mitigate common types of attacks such as DoS/DDoS, evasion techniques, spoofing, man-in-the-middle, and botnet

2.0 Advanced Threat Protection and Content Security
Written 17%
labs 19%

2.1 Compare and contrast different AMP solutions including public and private cloud deployment models

2.2 Describe, implement, and troubleshoot AMP for networks, AMP for endpoints, and AMP for content security (CWS, ESA, and WSA)

2.3 Detect, analyze, and mitigate malware incidents

2.4 Describe the benefit of threat intelligence provided by AMP Threat GRID

2.5 Perform packet capture and analysis using Wireshark, tcpdump, SPAN, and RSPAN

2.6 Describe, implement, and troubleshoot web filtering, user identification, and Application Visibility and Control (AVC)

2.7 Describe, implement, and troubleshoot mail policies, DLP, email quarantines, and SenderBase on ESA

2.8 Describe, implement, and troubleshoot SMTP authentication such as SPF and DKIM on ESA

2.9 Describe, implement, and troubleshoot SMTP encryption on ESA

2.10 Compare and contrast different LDAP query types on ESA

2.11 Describe, implement, and troubleshoot WCCP redirection

2.12 Compare and contrast different proxy methods such as SOCKS, Auto proxy/WPAD, and transparent

2.13 Describe, implement, and troubleshoot HTTPS decryption and DLP

2.14 Describe, implement, and troubleshoot CWS connectors on Cisco IOS routers, Cisco ASA, Cisco AnyConnect, and WSA

2.15 Describe the security benefits of leveraging the OpenDNS solution.

2.16 Describe, implement, and troubleshoot SMA for centralized content security management

2.17 Describe the security benefits of leveraging Lancope

3.0 Secure Connectivity and Segmentation
Written 17%
labs 19%

3.1 Compare and contrast cryptographic and hash algorithms such as AES, DES, 3DES, ECC, SHA, and MD5

3.2 Compare and contrast security protocols such as ISAKMP/IKEv1, IKEv2, SSL, TLS/DTLS, ESP, AH, SAP, and MKA

3.3 Describe, implementc and troubleshoot remote access VPN using technologies such as FLEXVPN, SSL-VPN between Cisco firewalls, routers, and end hosts

3.4 Describe, implement, and troubleshoot the Cisco IOS CA for VPN authentication

3.5 Describe, implement, and troubleshoot clientless SSL VPN technologies with DAP and smart tunnels on Cisco ASA and Cisco FTD

3.6 Describe, implement, and troubleshoot site-to-site VPNs such as GETVPN, DMVPN and IPsec

3.7 Describe, implement, and troubleshoot uplink and downlink MACsec (802.1AE)

3.8 Describe, implement, and troubleshoot VPN high availability using Cisco ASA VPN clustering and dual-hub DMVPN deployments

3.9 Describe the functions and security implications of cryptographic protocols such as AES, DES, 3DES, ECC, SHA, MD5, ISAKMP/IKEv1, IKEv2, SSL, TLS/DTLS, ESP, AH, SAP, MKA, RSA, SCEP/EST, GDOI, X.509, WPA, WPA2, WEP, and TKIP

3.10 Describe the security benefits of network segmentation and isolation

3.11 Describe, implement, and troubleshoot VRF-Lite and VRF-Aware VPN

3.12 Describe, implement, and troubleshoot microsegmentation with TrustSec using SGT and SXP

3.13 Describe, implement, and troubleshoot infrastructure segmentation methods such as VLAN, PVLAN, and GRE

3.14 Describe the functionality of Cisco VSG used to secure virtual environments

3.15 Describe the security benefits of data center segmentation using ACI, EVPN, VXLAN, and NVGRE

4.0 Identity Management, Information Exchange, and Access Control
Written 22%
labs 24%

4.1 Describe, implement, and troubleshoot various personas of ISE in a multinode deployment

4.2 Describe, implement, and troubleshoot network access device (NAD), ISE, and ACS configuration for AAA

4.3 Describe, implement, and troubleshoot AAA for administrative access to Cisco network devices using ISE and ACS

4.4 Describe, implement, verify, and troubleshoot AAA for network access with 802.1X and MAB using ISE.

4.5 Describe, implement, verify, and troubleshoot cut-through proxy/auth-proxy using ISE as the AAA server

4.6 Describe, implement, verify, and troubleshoot guest life cycle management using ISE and Cisco network infrastructure

4.7 Describe, implement, verify, and troubleshoot BYOD on-boarding and network access flows with an internal or external CA

4.8 Describe, implement, verify, and troubleshoot ISE and ACS integration with external identity sources such as LDAP, AD, and external RADIUS

4.9 Describe ISE and ACS integration with external identity sources such as RADIUS Token, RSA SecurID, and SAML

4.10 Describe, implement, verify, and troubleshoot provisioning of AnyConnect with ISE and ASA

4.11 Describe, implement, verify, and troubleshoot posture assessment with ISE

4.12 Describe, implement, verify, and troubleshoot endpoint profiling using ISE and Cisco network infrastructure including device sensor

4.13 Describe, implement, verify, and troubleshoot integration of MDM with ISE

4.14 Describe, implement, verify, and troubleshoot certificate based authentication using ISE

4.15 Describe, implement, verify, and troubleshoot authentication methods such as EAP Chaining and Machine Access Restriction (MAR)

4.16 Describe the functions and security implications of AAA protocols such as RADIUS, TACACS+, LDAP/LDAPS, EAP (EAP-PEAP, EAP-TLS, EAP-TTLS, EAP-FAST, EAP-TEAP, EAP- MD5, EAP-GTC), PAP, CHAP, and MS-CHAPv2

4.17 Describe, implement, and troubleshoot identity mapping on ASA, ISE, WSA and FirePOWER

4.18 Describe, implement, and troubleshoot pxGrid between security devices such as WSA, ISE, and Cisco FMC

5.0 Infrastructure Security, Virtualization, and Automation
Written 13%
labs 15%

5.1 Identify common attacks such as Smurf, VLAN hopping, and SYNful knock, and their mitigation techniques

5.2 Describe, implement, and troubleshoot device hardening techniques and control plane protection methods, such as CoPP and IP Source routing.

5.3 Describe, implement, and troubleshoot management plane protection techniques such as CPU and memory thresholding and securing device access

5.4 Describe, implement, and troubleshoot data plane protection techniques such as iACLs, uRPF, QoS, and RTBH

5.5 Describe, implement, and troubleshoot IPv4/v6 routing protocols security

5.6 Describe, implement, and troubleshoot Layer 2 security techniques such as DAI, IPDT, STP security, port security, DHCP snooping, and VACL

5.7 Describe, implement, and troubleshoot wireless security technologies such as WPA, WPA2, TKIP, and AES

5.8 Describe wireless security concepts such as FLEX Connect, wIPS, ANCHOR, Rogue AP, and Management Frame Protection (MFP)

5.9 Describe, implement, and troubleshoot monitoring protocols such as NETFLOW/IPFIX, SNMP, SYSLOG, RMON, NSEL, and eSTREAMER

5.10 Describe the functions and security implications of application protocols such as SSH, TELNET, TFTP, HTTP/HTTPS, SCP, SFTP/FTP, PGP, DNS/DNSSEC, NTP, and DHCP

5.11 Describe the functions and security implications of network protocols such as VTP, 802.1Q, TCP/UDP, CDP, LACP/PAgP, BGP, EIGRP, OSPF/OSPFv3, RIP/RIPng, IGMP/CGMP, PIM, IPv6, and WCCP

5.12 Describe the benefits of virtualizing security functions in the data center using ASAv, WSAv, ESAv, and NGIPSv

5.13 Describe the security principles of ACI such as object models, endpoint groups, policy enforcement, application network profiles, and contracts

5.14 Describe the northbound and southbound APIs of SDN controllers such as APIC-EM

5.15 Identify and implement security features to comply with organizational security policies, procedures, and standards such as BCP 38, ISO 27001, RFC 2827, and PCI-DSS

5.16 Describe and identify key threats to different places in the network (campus, data center, core, edge) as described in Cisco SAFE

5.17 Validate network security design for adherence to Cisco SAFE recommended practices

5.18 Interpret basic scripts that can retrieve and send data using RESTful API calls in scripting languages such as Python

5.19 Describe Cisco Digital Network Architecture (DNA) principles and components.

6.0 Evolving Technologies
Written 21%
labs N/A

6.1 Cloud
6.1.a Compare and contrast Cloud deployment models
6.1.a [i] Infrastructure, platform, and software services (XaaS)
6.1.a [ii] Performance and reliability
6.1.a [iii] Security and privacy
6.1.a [iv] Scalability and interoperability
6.1.b Describe Cloud implementations and operations
6.1.b [i] Automation and orchestration
6.1.b [ii] Workload mobility
6.1.b [iii] Troubleshooting and management
6.1.b [iv] OpenStack components

6.2 Network Programmability (SDN)
6.2.a Describe functional elements of network programmability (SDN) and how they interact
6.2.a [i] Controllers
6.2.a [ii] APIs
6.2.a [iii] Scripting
6.2.a [iv] Agents
6.2.a [v] Northbound vs. Southbound protocols
6.2.b Describe aspects of virtualization and automation in network environments
6.2.b [i] DevOps methodologies, tools and workflows
6.2.b [ii] Network/application function virtualization (NFV, AFV)
6.2.b [iii] Service function chaining
6.2.b [iv] Performance, availability, and scaling considerations

6.3 Internet of Things (IoT)
6.3.a Describe architectural framework and deployment considerations for Internet of Things
6.3.a [i] Performance, reliability and scalability
6.3.a [ii] Mobility
6.3.a [iii] Security and privacy
6.3.a [iv] Standards and compliance
6.3.a [v] Migration
6.3.a [vi] Environmental impacts on the network

Make The Best Choice Chose - Examkingdom
Reday to get certified today competitive computer industry Examkingdom's preparation material includes the most excellent features, prepared by the same dedicated experts who have come together to offer an integrated solution. We provide the most excellent and simple method to pass your Cisco Cisco CCIE Security Exams 400-251 exam on the first attempt "GUARANTEED".

Unlimited Access Package
will prepare you for your exam with guaranteed results, 400-251 Study Guide. Your exam will download as a single 400-251 PDF or complete 400-251 testing engine as well as over +4000 other technical exam PDF and exam engine downloads. Forget buying your prep materials separately at three time the price of our unlimited access plan - skip the 400-251 audio exams and select the one package that gives it all to you at your discretion: 400-251 Study Materials featuring the exam engine.

Examkingdom 400-251 Exam Prepration Tools
Examkingdom Cisco Cisco CCIE Security Exams preparation begins and ends with your accomplishing this credential goal. Although you will take each Cisco Cisco CCIE Security Exams online test one at a time - each one builds upon the previous. Remember that each Cisco Cisco CCIE Security Exams exam paper is built from a common certification foundation.

400-251 Exam Testing Engines
Beyond knowing the answer, and actually understanding the 400-251 test questions puts you one step ahead of the test. Completely understanding a concept and reasoning behind how something works, makes your task second nature. Your 400-251 quiz will melt in your hands if you know the logic behind the concepts. Any legitimate Cisco Cisco CCIE Security Exams prep materials should enforce this style of learning - but you will be hard pressed to find more than a Cisco Cisco CCIE Security Exams practice test anywhere other than Certkingdom.

400-251 Exam Questions and Answers with Explanation
This is where your Cisco Cisco CCIE Security Exams 400-251 exam prep really takes off, in the testing your knowledge and ability to quickly come up with answers in the 400-251 online tests. Using Cisco CCIE Security Exams 400-251 practice exams is an excellent way to increase response time and queue certain answers to common issues.

400-251 Exam Study Guides
All Cisco Cisco CCIE Security Exams online tests begin somewhere, and that is what the Cisco Cisco CCIE Security Exams training course will do for you: create a foundation to build on. Study guides are essentially a detailed Cisco Cisco CCIE Security Exams 400-251 tutorial and are great introductions to new Cisco Cisco CCIE Security Exams training courses as you advance. The content is always relevant, and compound again to make you pass your 400-251 exams on the first attempt. You will frequently find these 400-251 PDF files downloadable and can then archive or print them for extra reading or studying on-the-go.

400-251 Exam Video Training
For some, this is the best way to get the latest Cisco Cisco CCIE Security Exams 400-251 training. However you decide to learn 400-251 exam topics is up to you and your learning style. The Examkingdom Cisco Cisco CCIE Security Exams products and tools are designed to work well with every learning style. Give us a try and sample our work. You'll be glad you did.

400-251 Other Features
* Realistic practice questions just like the ones found on certification exams.
* Each guide is composed from industry leading professionals real Cisco Cisco CCIE Security Examsnotes, certifying 100% brain dump free.
* Study guides and exam papers are guaranteed to help you pass on your first attempt or your money back.
* Designed to help you complete your certificate using only
* Delivered in PDF format for easy reading and printing Examkingdom unique CBT 400-251 will have you dancing the Cisco Cisco CCIE Security Exams jig before you know it
* Cisco CCIE Security Exams 400-251 prep files are frequently updated to maintain accuracy. Your courses will always be up to date.

Get Cisco CCIE Security Exams ebooks from Examkingdom which contain real 400-251 exam questions and answers. You WILL pass your Cisco CCIE Security Exams exam on the first attempt using only Examkingdom's Cisco CCIE Security Exams excellent preparation tools and tutorials.

This is what our customers are saying about Examkingdom.com.
These are real testimonials. Hi friends! Examkingdom.com is No1 in sites coz in $25 I cant believe this but when I purchased the $25 package it was amazing I Cisco passed 10 Exams using Examkingdom guides in one Month So many thanks to Examkingdom Team , Please continue this offer for next year also. So many Thanks

Mike CA
Thank You! I would just like to thank Examkingdom.com for the Cisco Cisco CCIE Security Exams 400-251 test guide that I bought a couple months ago and I took my test and pass overwhelmingly. I completed the test of 1280 questions in about 90 minutes I must say that their Q & A with Explanation are very amazing and easy to learn.

Jay Brunets
After my co-workers found out what I used to pass Cisco Cisco CCIE Security Exams 400-251 the test, that many are thinking about purchasing Examkingdom.com for their Cisco CCIE Security Exams exams, I know I will again

John NA
I passed the Cisco Cisco CCIE Security Exams 400-251 exam yesterday, and now it's on to security exam. Couldn't have done it with out you. Thanks very much.

Oley R.
Hello Everyone
I Just Passed The Cisco Cisco CCIE Security Exams 400-251 Took 80 to 90 Minutes max to understand and easy to learn. Thanks For Everything Now On To 400-251

Robert R.
Hi Examkingdom.com thanks so much for your assistance in Cisco Cisco CCIE Security Exams i passed today it was a breeze and i couldn't have done it without you. Thanks again

Seymour G.
I have used your Exam Study Guides for preparation for Cisco Cisco CCIE Security Exams 400-251. I also passed all those on the first round. I'm currently preparing for the Microsoft and theCisco CCIE Security Exams. exams

Ken T.
I just wanted to thank you for helping me get myCisco CCIE Security Exams $50 package for all guides is awesome you made the journey a lot easier. I passed every test the first time using your Guide

Mario B.
I take this opportunity to express my appreciation to the authors of Examkingdom.com Cisco Cisco CCIE Security Exams test guide. I purchased the 400-251 soon after my formal hands on training and honestly, my success in the test came out of nowhere but Examkingdom.com. Once again I say thanks

Kris H.
Dear Examkingdom.com team the test no. 400-251 that i took was very good, I received 880 and could have gain more just by learning your exams

Gil L.
Hi and Thanks I have just passed the Cisco CCIE Security Exams Directory Services Design exam with a score of 928 thanks to you! The guide was excellent

Edward T.
Great stuff so far....I love this site....!! I am also on the Cisco Cisco CCIE Security Exams I decided to start from Examkingdom and start learning study Cisco CCIE Security Exams from home... It has been really difficult but so far I have managed to get through 4 exams....., now currently studying for the more exams.... Have a good day.................................................. Cheers

Ted Hannam
Thanks for your Help, But I have finally downloaded Cisco Cisco CCIE Security Exams 400-251 exam preparation from examkingdom.com they are provided me complete information about the exam, lets hope I get success for the 400-251 exam, I found there exams very very realistic and useful. thanks again

lindsay Paul

Examkingdom Offline Testing Engine Simulator Download

Prepare with yourself how Examkingdom Offline Exam Simulator it is designed specifically for any exam preparation. It allows you to create, edit, and take practice tests in an environment very similar to an actual exam.


Supported Platforms: Windows-7 64bit or later - EULA | How to Install?


FAQ's: Windows-8 / Windows 10 if you face any issue kinldy uninstall and reinstall the Simulator again.



Download Offline Simulator-Beta

Examkingdom Testing Engine Features

• Examkingdom Testing Engine simulates the real exam environment.
• Interactive Testing Engine Included
• Live Web App Testing Engine
• Offline Downloadable Desktop App Testing Engine
• Testing Engine App for Android
• Testing Engine App for iPhone
• Testing Engine App for iPad
• Working with the Examkingdom Testing Engine is just like taking the real tests, except we also give you the correct answers.
• More importantly, we also give you detailed explanations to ensure you fully understand how and why the answers are correct.

Examkingdom Android Testing Engine Simulator Download

Take your learning mobile android device with all the features as desktop offline testing engine. All android devices are supported.
Supported Platforms: All Android OS EULA

Install the Android Testing Engine from google play store and download the app.ck from Examkingdom website android testing engine download

Examkingdom Android Testing Engine Features

• Examkingdom Offline Android Testing Engine
• Make sure to enable Root check in Playstore
• Live Realistic practice tests
• Live Virtual test environment
• Live Practice test environment
• Mark unanswered Q&A
• Free Updates
• Save your tests results
• Re-examine the unanswered Q & A
• Make your own test scenario (settings)
• Just like the real tests: multiple choice questions
• Updated regularly, always current