Pass the Cisco CCNP Security 350-701 Questions and answers with CertsForce

Explanation

The command “crypto isakmp identity address 172.19.20.24” is not valid. We can only use “crypto isakmp

identity {address | hostname}. The following example uses preshared keys at two peers and sets both their

ISAKMP identities to the IP address.

At the local peer (at 10.0.0.1) the ISAKMP identity is set and the preshared key is specified:

crypto isakmp identity address

crypto isakmp key sharedkeystring address 192.168.1.33

At the remote peer (at 192.168.1.33) the ISAKMP identity is set and the same preshared key is specified:

crypto isakmp identity address

crypto isakmp key sharedkeystring address 10.0.0.1

Explanation

Symmetric encryption uses a single key that needs to be shared among the people who need to receive the message while asymmetric encryption uses a pair of public key and a private key to encrypt and decrypt messages when communicating.

Asymmetric encryption takes relatively more time than the symmetric encryption.

Diffie Hellman algorithm is an asymmetric algorithm used to establish a shared secret for a symmetric key

algorithm. Nowadays most of the people uses hybrid crypto system i.e, combination of symmetric and

asymmetric encryption. Asymmetric Encryption is used as a technique in key exchange mechanism to share secret key and after the key is shared between sender and receiver, the communication will take place using symmetric encryption. The shared secret key will be used to encrypt the communication.

Triple DES (3DES), a symmetric-key algorithm for the encryption of electronic data, is the successor of DES (Data Encryption Standard) and provides more secure encryption then DES.

Note: Although “requires secret keys” option in this question is a bit unclear but it can only be assigned to

Symmetric algorithm.

A basic SYN flood attack is a type of denial-of-service (DoS) attack that aims to exhaust the resources of a server by sending a large number of SYN packets and not completing the TCP three-way handshake. The intent of this attack is to exceed the threshold limit of the connection queue, which is the data structure that stores the information about the pending connections. By doing so, the attacker prevents legitimate clients from establishing connections with the server, as the server cannot accept any more SYN requests. A SYN flood attack can be performed with spoofed IP addresses or without IP spoofing, depending on the attacker’s strategy and the server’s configuration. References: [Implementing and Operating Cisco Security Core Technologies (SCOR) v1.0], Module 3: Securing Networks with Firewalls, Lesson 3.2: Firewall Technologies, Topic 3.2.1: Firewall Technologies Overview, Page 8. SYN flood DDoS attack | Cloudflare. How to Perform TCP SYN Flood DoS Attack & Detect it with Wireshark - Kali Linux hping3. SYN flood - Wikipedia. SYN Flood Attack | SpringerLink. What Is a SYN Flood Attack? | F5.

Explanation

Explanation

As the new device does not have a supplicant, we cannot use 802.1X.

MAC Authentication Bypass (MAB) is a fallback option for devices that don’t support 802.1x. It is virtually

always used in deployments in some way shape or form. MAB works by having the authenticator take the

connecting device’s MAC address and send it to the authentication server as its username and password. The authentication server will check its policies and send back an Access-Accept or Access-Reject just like it would with 802.1x.

Cisco ISE Profiling Services provides dynamic detection and classification of endpoints connected to the

network. Using MAC addresses as the unique identifier, ISE collects various attributes for each network

endpoint to build an internal endpoint database. The classification process matches the collected attributes to prebuilt or user-defined conditions, which are then correlated to an extensive library of profiles. These profiles include a wide range of device types, including mobile clients (iPads, Android tablets, Chromebooks, and so

on), desktop operating systems (for example, Windows, Mac OS X, Linux, and others), and numerous non-user systems such as printers, phones, cameras, and game consoles.

Once classified, endpoints can be authorized to the network and granted access based on their profile. For example, endpoints that match the IP phone profile can be placed into a voice VLAN using MAC Authentication Bypass (MAB) as the authentication method. Another example is to provide differentiated network access to users based on the device used. For example, employees can get full access when accessing the network from their corporate workstation but be granted limited network access when accessing the network from their personal iPhone.

Explanation

Explanation

NetFlow is typically used for several key customer applications, including the following:

…

Billing and accounting. NetFlow data provides fine-grained metering (for instance, flow data includes details such as IP addresses, packet and byte counts, time stamps, type of service (ToS), and application ports) for highly flexible and detailed resource utilization accounting. Service providers may use the information for billing based on time of day, bandwidth usage, application usage, quality of service, and so on. Enterprise customers may use the information for departmental charge back or cost allocation for resource utilization.

Explanation

Cisco Email Security Appliance (ESA) protects the email infrastructure and employees who use email at work

by filtering unsolicited and malicious email before it reaches the user. Cisco ESA easily integrates into existing

email infrastructures with a high degree of flexibility. It does this by acting as a Mail Transfer Agent (MTA) within

the email-delivery chain. Another name for an MTA is a mail relay.

Cisco Cloudlock is a cloud-native security platform that provides data loss prevention (DLP) capabilities for public cloud environments, such as SaaS, IaaS, and PaaS. Cisco Cloudlock can discover, classify, and protect sensitive data stored in cloud applications, such as Office 365, Google Workspace, Salesforce, Dropbox, and AWS. Cisco Cloudlock uses advanced techniques, such as regular expressions, keywords, dictionaries, and machine learning, to identify and monitor data based on predefined or custom policies. Cisco Cloudlock can also enforce actions, such as encryption, quarantine, deletion, or notification, to prevent data leakage or exposure12. References := 1: Cisco Cloudlock Data Sheet 2: Cloud Data Loss Prevention (Cloud DLP) Overview

Explanation

Posture is a service in Cisco Identity Services Engine (Cisco ISE) that allows you to check the state, also

known as posture, of all the endpoints that are connecting to a network for compliance with corporate security

policies.

A posture policy is a collection of posture requirements that are associated with one or more identity groups and

operating systems.

Posture-policy requirements can be set to mandatory, optional, or audit types in posture policies.

+ If a mandatory requirement fails, the user will be moved to Non-Compliant state

+ If an optional requirement fails, the user is allowed to skip the specified optional requirements and the user

is moved to Compliant state

This Qdid not clearly specify the type of posture policy requirement (mandatory or optional) is not met so the

user can be in Non-compliant or compliant state. But “noncompliant” is the best answer here.

 The RADIUS CoA feature supports the IETF attribute 24 State, which is used to identify the session for which the CoA request is intended. The State attribute is sent by the device in the Access-Accept message and must be echoed back by the RADIUS server in the CoA-Request message. The other attributes are not supported for the RADIUS CoA feature.

To understand the concept of RADIUS CoA and the supported attributes, you can refer to the following sections of the source book:

Section 1.1.2: Describe the concepts of network security

Section 1.1.2.6: Describe the concepts of RADIUS CoA

Section 1.1.2.7: Describe the concepts of supported IETF attributes

Multifactor authentication (MFA) is a security measure that requires two or more proofs of identity to grant access to a resource, such as a username and password, a one-time code, a smart card, etc.1 MFA provides stronger protection than single-factor authentication (SFA), which only requires one proof of identity, such as a password. SFA can be compromised more easily by attackers who can guess, steal, or intercept passwords, or use phishing or social engineering techniques to trick users into revealing their credentials. MFA adds an extra layer of security that makes it harder for attackers to gain access, even if they have the password. MFA can also prevent unauthorized access from lost or stolen devices, as the attacker would need another factor to authenticate. MFA can also deter attackers from targeting an organization, as they would need to invest more time and resources to bypass the security measures. Therefore, organizations should migrate to a multifactor authentication strategy to enhance their security posture and protect their data and assets. References := 1: What is Multi-Factor Authentication (MFA)? - Auth0

 Intelligent Multi-Scan (IMS) is a feature that enables the Cisco ESA to perform multiple anti-spam scans on each message and apply different actions based on the results. IMS also includes the Graymail Detection and Safe Unsubscribe services, which allow the ESA to identify and filter messages that are not strictly spam, but are low-priority or unwanted by the end user, such as newsletters, social media notifications, or marketing emails. The Graymail Detection service can classify messages into different categories, such as bulk, mass, or subscription, and assign different scores and verdicts to them. The Safe Unsubscribe service can provide a link for the end user to safely unsubscribe from the sender’s mailing list, without revealing their email address or opening a malicious URL. To enable the blocking of greymail for the end user, the administrator must first enable the IMS feature globally and then configure the Graymail and Safe Unsubscribe settings in the mail policies. The administrator can also enable the centralized spam quarantine and the end-user quarantine interface to allow the end user to manage their own quarantined messages. References :=

Best Practice Guide for Anti-Spam, Anti-Virus, Graymail and Outbreak Filters

Graymail Detection and Safe Unsubscribing Functionality