Local web authentication (LWA) and central web authentication (CWA) are two mechanisms that are used to redirect users to a web portal to authenticate to ISE for guest services. Both methods involve the use of a redirect access control list (ACL) that allows the user to access only the web portal URL and blocks all other traffic until the user is authenticated. The difference between LWA and CWA is where the web portal and the authentication logic are hosted. * LWA: The web portal and the authentication logic are hosted on the wireless LAN controller (WLC). The WLC sends a RADIUS access-accept message to the network access device (NAD) along with the redirect ACL and the web portal URL. The NAD then redirects the user to the web portal on the WLC, where the user enters their credentials. The WLC verifies the credentials with the ISE and grants or denies access to the user. The advantage of LWA is that it does not require any configuration on the ISE, but the disadvantage is that it does not support advanced features such as posture assessment, profiling, or authorization policies. * CWA: The web portal and the authentication logic are hosted on the ISE. The WLC sends a RADIUS access-challenge message to the NAD along with the redirect ACL and the web portal URL. The NAD then redirects the user to the web portal on the ISE, where the user enters their credentials. The ISE verifies the credentials and sends a RADIUS access-accept message to the WLC with the authorization profile and the final ACL. The WLC then applies the authorization profile and the final ACL to the user session. The advantage of CWA is that it supports advanced features such as posture assessment, profiling, or authorization policies, but the disadvantage is that it requires more configuration on the ISE. References := * Configure Guest Access * Web Authentication Redirection to Original URL * Configure Local Web Authentication with External Authentication
Question 352
A Cisco ESA administrator has been tasked with configuring the Cisco ESA to ensure there are no viruses before quarantined emails are delivered. In addition, delivery of mail from known bad mail servers must be prevented. Which two actions must be taken in order to meet these requirements? (Choose two)
Correct Answer: A,E
Reference: https://www.cisco.com/c/en/us/td/docs/security/esa/esa12-0/user_guide/b_ESA_Admin_Guide_12_0/b_ESA_Ad Therefore Outbreak filters can be used to block emails from bad mail servers.Web servers and email gateways are generally located in the DMZ soNote: The recipient access table (RAT), not to be confused with remote-access Trojan (also RAT), is a Cisco ESA term that defines which recipients are accepted by a public listener.
Question 353
An engineer integrates Cisco FMC and Cisco ISE using pxGrid. Which role is assigned for Cisco FMC?
Correct Answer: D
Question 354
An engineer wants to automatically assign endpoints that have a specific OUI into a new endpoint group. Which probe must be enabled for this type of profiling to work?
Correct Answer: B
Cisco ISE can determine the type of device or endpoint connecting to the network by performing "profiling." Profiling is done by using DHCP, SNMP, Span, NetFlow, HTTP, RADIUS, DNS, or NMAP scans to collect as much metadata as possible to learn the device fingerprint. NMAP ("Network Mapper") is a popular network scanner which provides a lot of features. One of them is the OUI (Organizationally Unique Identifier) information. OUI is the first 24 bit or 6 hexadecimal value of the MAC address. Note: DHCP probe cannot collect OUIs of endpoints. NMAP scan probe can collect these endpoint attributes: + EndPointPolicy + LastNmapScanCount + NmapScanCount + OUI + Operating-system Reference: http://www.network-node.com/blog/2016/1/2/ise-20-profiling Profiling is done by using DHCP, SNMP, Span, NetFlow, HTTP, RADIUS, DNS, or NMAP scans to collect as much metadata as possible to learn the device fingerprint. NMAP ("Network Mapper") is a popular network scanner which provides a lot of features. One of them is the OUI (Organizationally Unique Identifier) information. OUI is the first 24 bit or 6 hexadecimal value of the MAC address. Note: DHCP probe cannot collect OUIs of endpoints. NMAP scan probe can collect these endpoint attributes: + EndPointPolicy + LastNmapScanCount + NmapScanCount + OUI + Operating-system Cisco ISE can determine the type of device or endpoint connecting to the network by performing "profiling." Profiling is done by using DHCP, SNMP, Span, NetFlow, HTTP, RADIUS, DNS, or NMAP scans to collect as much metadata as possible to learn the device fingerprint. NMAP ("Network Mapper") is a popular network scanner which provides a lot of features. One of them is the OUI (Organizationally Unique Identifier) information. OUI is the first 24 bit or 6 hexadecimal value of the MAC address. Note: DHCP probe cannot collect OUIs of endpoints. NMAP scan probe can collect these endpoint attributes: + EndPointPolicy + LastNmapScanCount + NmapScanCount + OUI + Operating-system Reference: http://www.network-node.com/blog/2016/1/2/ise-20-profiling
Question 355
A network administrator needs to find out what assets currently exist on the network. Third-party systems need to be able to feed host data into Cisco Firepower. What must be configured to accomplish this?
Correct Answer: A
You can configure discovery rules to tailor the discovery of host and application data to your needs. The Firepower System can use data from NetFlow exporters to generate connection and discovery events, and to add host and application data to the network map. A network analysis policy governs how traffic is decoded and preprocessed so it can be further evaluated, especially for anomalous traffic that might signal an intrusion attempt
