In a university setting where users often connect more than five devices to the network, an IT administrator notices some devices are problematic and require frequent upgrades. How can ClearPass assist in identifying the impact of these upgrades?
Answer(s): A
ClearPass Profiling is a foundational feature used to gain visibility into every device on the network. It uses various "collectors" (such as DHCP fingerprints, HTTP User-Agents, and MAC OUIs) to determine the Category, OS Family, and Name of an endpoint. In a high-density environment like a university, profiling allows administrators to generate reports on specific device types. When an upgrade is required for a specific model (e.g., a specific version of Android or a certain laptop brand), the administrator can instantly see exactly how many of those devices are currently active, allowing for better capacity planning and impact analysis.
A company has recently shifted to a zero-trust model and is facing challenges with its legacy network infrastructure, which was not designed for such a model. The company is particularly concerned about the security of its network as it accommodates a growing number of remote users and IoT devices. What solution could help them create role-based access policies and ensure continuous, closed-loop security across their network?
The Zero Trust framework dictates that "trust" is never granted implicitly but is instead based on identity and context. ClearPass provides this by moving security away from static IP/VLAN-based rules to Dynamic Role-Based Access Control (RBAC). By integrating profiling (to identify what the device is) with authentication (to identify who the user is), ClearPass assigns a "Role." This role stays with the user/device regardless of where or how they connect, ensuring a consistent security posture across legacy and modern infrastructure.
An organization wants to enhance its network security by integrating external systems to provide rich context to its authorization logic. They plan to use ClearPass Policy Manager for this purpose. Which feature of the Policy Manager will be most beneficial for integrating with these external systems?
Answer(s): C
ClearPass is designed as an open platform. The External Context Server feature allows ClearPass to exchange data with third-party security systems like Firewalls (Palo Alto, Check Point), EMM/MDM (Intune, AirWatch), and SIEMs (Splunk). By using REST APIs or XML/JSON over HTTP, ClearPass can send "Context Server Actions" (like telling a firewall to quarantine a user) or receive data to be used as attributes in authorization policies.
An IT administrator needs to configure multiple profile collectors to gather endpoint context data for a diverse network. What is the primary benefit of using ClearPass for this task?
The primary benefit of profiling is the transition from "MAC-only" visibility to "Context-aware" visibility. By using multiple collectors (DHCP, SNMP, HTTP, SSH, etc.), ClearPass builds a high-fidelity profile of the endpoint. This allows the administrator to write fine-grained policies—for example, allowing a "Workstation" to access the production server but only allowing an "IoT Camera" to access the NVR. Without this profiling context, the system cannot distinguish between different security levels required for diverse hardware.
An IT technician is tasked with ensuring that the Network Access Device's (NAD) trust chain is properly configured on ClearPass. They select RadSec for the network device and observe that the PSK is automatically set to 'radsec'. What critical step should the technician take next to ensure secure communication?
RadSec (RADIUS over TLS) replaces the traditional MD5-based Pre-Shared Key (PSK) with a secure TLS tunnel. While the UI might show a placeholder "radsec" PSK, the actual security relies on Mutual Authentication via certificates. For the TLS handshake to succeed, ClearPass must trust the Certificate Authority (CA) that signed the NAD's certificate, and vice versa. Therefore, verifying that the NAD's trust chain is uploaded to the ClearPass Trust List is the most critical step for a successful connection.
In an enterprise environment, a network administrator is tasked with configuring ClearPass to interact with various network access devices (NADs). After navigating to the 'Devices' section under the 'Network' menu, what critical step must the administrator take to add a new NAD to ClearPass properly?
When a RADIUS request reaches ClearPass, the system first attempts to identify the sender. ClearPass uses the Source IP Address of the incoming packet to match it against its configured list of Network Devices. If the IP is not found in the 'Devices' database, the request is dropped as an "Unknown NAD." Administrators can add single IPs (e.g., 10.1.1.5) or subnets (e.g., 10.1.1.0/24) to authorize groups of switches or APs.
A network engineer needs to ensure secure and reliable communication between network devices and the RADIUS server over an unsecured network. Which configuration should they implement?
Traditional RADIUS (UDP 1812/1813) only encrypts the password attribute; the rest of the packet (including the username) is sent in cleartext. Furthermore, UDP is connectionless and can be unreliable over WAN links. RadSec solves both issues by wrapping RADIUS in TLS, providing full-packet encryption, and using TCP, which provides guaranteed delivery and better handling of MTU issues/fragmentation across unsecured public networks.
How does the ClearPass profiler mitigate the risk of an attacker replacing a wired IP camera with a laptop using the same MAC address?
Answer(s): B
This scenario describes a MAC Spoofing attack. Since a MAC address is easily faked, ClearPass Profiler uses "Fingerprinting." While the attacker's laptop may have the camera's MAC, its DHCP Options (the order and type of parameters requested) and its HTTP User-Agent string will identify it as a "Windows" or "Linux" device rather than a "Linux/Embedded Camera." ClearPass detects this profile conflict and can trigger a CoA (Change of Authorization) to bounce the port or move it to a restricted VLAN.
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in 72 the answer must be [sys_user_has_role] table.
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