Home > Articles > Cisco Certification > CCNP Security / CCSP > CCNP Security SISAS 300-208 Official Cert Guide: Authentication Policies

CCNP Security SISAS 300-208 Official Cert Guide: Authentication Policies

  • Sample Chapter is provided courtesy of Cisco Press.
  • Date: May 6, 2015.


  1. "Do I Know This Already?" Quiz
  2. Foundation Topics
  3. Exam Preparation Tasks

Chapter Description

In this chapter from CCNP Security SISAS 300-208 Official Cert Guide, the authors discuss network authentication policies.

An authentication is simply the validating of a credential. It is an important step in the process of performing any sort of secure network access control. When thinking about authentication, it often helps to relate the topic to something that occurs within your day-to-day life

Consider when a highway patrol officer has a driver pull his car over to the side of the road. The officer will walk up to the driver’s window and ask for his driver’s license and proof of insurance (at least that is what happens in the United States). The driver will hopefully hand over these documents for the officer to inspect.

The officer should examine the driver’s license and determine whether it appears to be real. The hologram and watermarks in the driver’s license are there, so it appears to be real. The picture on the license looks like the driver who handed over the license. The license hasn’t expired. After going back to the squad car, the officer will perform a lookup into the Department of Motor Vehicles database to determine whether the license has been suspended.

All checks have passed. This is a valid ID. The “authentication” was successful.

Authentication policies have a few goals. They drop traffic that isn’t allowed and prevent it from taking up any more processing power (the officer would immediately reject a library card because that is not an allowed form of ID for a driver). The policy will route authentication requests to the correct identity store (North Carolina DMV, or New York DMV, and so on and so on); validate the identity (was this a valid license for that driver); and finally “pass” successful authentications over to the authorization policy (was the driver allowed to exceed the speed limit and run other drivers off the road).

When thinking about authentication for network access, it often helps to relate the topic to an example such as this one, where it is something that occurs within your day-to-day life. Typically, the goals are similar, and it helps to understand the difference between authentication and authorization.

“Do I Know This Already?” Quiz

The “Do I Know This Already?” quiz enables you to assess whether you should read this entire chapter thoroughly or jump to the “Exam Preparation Tasks” section. If you are in doubt about your answers to these questions or your own assessment of your knowledge of the topics, read the entire chapter. Table 10-1 lists the major headings in this chapter and their corresponding “Do I Know This Already?” quiz questions. You can find the answers in Appendix A, “Answers to the ‘Do I Know This Already?’ Quizzes.”

Table 10-1 “Do I Know This Already?” Section-to-Question Mapping

Foundation Topics Section


Describe Identity Store Options


Implement Wired/Wireless 802.1X


AV Pairs


EAP Types


Implement MAB

1, 4

Describe the MAB Process Within an 802.1X Framework


ISE Authentication/Authorization Policies

3, 5, 9-10

  1. Which of the following is required to perform MAB from a Cisco network device?

    1. The RADIUS packet must have the service-type set to login and the called-station-id populated with the MAC address of the endpoint.
    2. The RADIUS packet must have the service-type set to Call-Check and the calling-station-id populated with the MAC address of the endpoint.
    3. The RADIUS packet must have the service-type set to Call-Check and the called-station-id populated with the MAC address of the endpoint
    4. The RADIUS packet must have the service-type set to login and the calling-station-id populated with the MAC address of the endpoint
  2. Which EAP type is capable of performing EAP chaining?

    1. PEAP
    2. EAP-FAST
    3. EAP-TLS
    4. EAP-MD5
  3. Which of the following choices are purposes of an authentication policy?

    1. To permit or deny access to the network based on the incoming authentication request
    2. To apply access control filters, such as dACL or security group tags (SGTs), to the network device to limit traffic
    3. To drop requests using an incorrect authentication method, route authentication requests to the correct identity store, validate the identity, and “pass” successful authentications over to the authorization policy
    4. To terminate encrypted tunnels for purposes of remote access into the network
  4. True or False? You must select Detect PAP as Host Lookup to enable MAB requests for Cisco nNetwork devices.

    1. True
    2. False
  5. True or False? Policy conditions from attribute dictionaries can be saved as conditions inline while building authentication policies.

    1. True
    2. False
  6. Which method will work effectively to allow a different Identity store to be selected for each EAP type used?

    1. This is not possible because the first rule to match 802.1X will be used and no further rules can be used.
    2. Create one authentication rule that matches a service type framed for each of the EAP protocols. Each authentication rule should have one subrule that matches the EapAuthentication (such as EAP-TLS, EAP-FAST, and so on).
    3. This is only possible for the main EAP types. If there is an inner method of EAP-MSCHAPv2 with PEAP, it must be sent to the same identity store as the EAP-MSCHAPv2 inner method of EAP-FAST.
    4. Create one sub-rule for each EAP type under the default 802.1X authentication rule that points to the appropriate identity store per rule.
  7. Which RADIUS attribute is used to match the SSID?

    1. calling-station-ID
    2. source-wireless-SSID
    3. framed-station-ID
    4. called-station-ID
  8. Which RADIUS attribute contains the MAC address of the endpoint?

    1. calling-station-ID
    2. source-wireless-SSID
    3. framed-station-ID
    4. called-station-ID
  9. What is the purpose of the continue option of an authentication rule?

    1. The continue option is used to send an authentication down the list of rules in an authentication policy until there is a match.
    2. The continue option sends an authentication to the next sub-rule within the same authentication rule.
    3. The continue option is used to send an authentication to the authorization policy, even if the authentication was not successful.
    4. The continue option will send an authentication to the selected identity store.
  10. True or False? The Drop option for an authentication rule will allow ISE to act as if it were not “alive” so the network device will no longer send authentication requests to that ISE server.

    1. True
    2. False
2. Foundation Topics | Next Section

Cisco Press Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from Cisco Press and its family of brands. I can unsubscribe at any time.


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about Cisco Press products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.


Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites; develop new products and services; conduct educational research; and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.


If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@ciscopress.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.


This site is not directed to children under the age of 13.


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.


Users can always make an informed choice as to whether they should proceed with certain services offered by Cisco Press. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.ciscopress.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020