Cisco CCNP Security 300-730 Questions & Answers

• Question 191:

  A network administrator wants to block traffic to a known malware site at https:/www.badsite.com and all subdomains while ensuring no packets from any internal client are sent to that site. Which type of policy must the network administrator use to accomplish this goal?

  A. Access Control policy with URL filtering

  B. Prefilter policy

  C. DNS policy

  D. SSL policy

  Correct Answer: A

  The correct answer is A. Access Control policy with URL filtering. An Access Control policy is a type of policy that allows you to control how traffic is handled on your network based on various criteria, such as source and destination IP addresses, ports, protocols, applications, users, and URLs. URL filtering is a feature that enables you to block or allow traffic based on the URL category or reputation of the website. You can create custom URL objects to specify the exact URLs or domains that you want to block or allow. For example, you can create a URL object for https:/www.badsite.com and set it to block. This will prevent any traffic from reaching that site and any subdomains under it12.

  B. Prefilter policy is a type of policy that allows you to perform fast actions on traffic before it reaches the Access Control policy. You can use prefilter rules to drop, fastpath, or trust traffic based on simple criteria, such as IP addresses or ports. However, prefilter rules do not support URL filtering, so you cannot use them to block traffic based on the website domain3.

  C. DNS policy is a type of policy that allows you to inspect and modify DNS requests and responses on your network. You can use DNS rules to block, monitor, or sinkhole DNS

• Question 192:

  An engineer is creating an URL object on Cisco FMC. How must it be configured so that the object will match for HTTPS traffic in an access control policy?

  A. Specify the protocol to match (HTTP or HTTPS).

  B. Use the FQDN including the subdomain for the website.

  C. Use the subject common name from the website certificate.

  D. Define the path to the individual webpage that uses HTTPS.

  Correct Answer: B

  Use the FQDN including the subdomain for the website. According to the Firepower Management Center Configuration Guide, Version 6.61, when you create a URL object, you must use the fully qualified domain name (FQDN) of the website, including any subdomains, and omit the protocol prefix (HTTP or HTTPS). For example, to match www.example.com, you must enter www.example.com as the URL object value, not http://www.example.com or https://www.example.com. The system automatically matches both HTTP and HTTPS traffic for the same FQDN. Specifying the protocol to match (HTTP or HTTPS) is not required and will result in an invalid URL object. Using the subject common name from the website certificate or defining the path to the individual webpage that uses HTTPS are not supported options for URL objects.