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In a remote access VPN configuration, dynamic split tunneling allows traffic to certain trusted domains to bypass the VPN tunnel and exit through the client's local internet gateway. This feature selectively directs only the necessary traffic over the VPN, while allowing direct internet access for specific domains or traffic deemed safe or trusted, optimizing bandwidth and performance for remote users.

The kind of API that is used with Cisco DNA Center to provision SSIDs, QoS policies, and update software versions on switches is the Intent API. The Intent API is a category of APIs that allows users to express their desired network outcomes or intents, such as creating a site, adding a device, or deploying a network profile. The Intent API then translates these intents into specific network configurations and commands, and applies them to the relevant network devices and services. The Intent API simplifies and automates the network provisioning and management process, and enables users to focus on the business objectives rather than the technical details. Some examples of Intent APIs are:

Site Management API: This API allows users to create, update, delete, and retrieve sites and buildings in Cisco DNA Center. A site is a logical grouping of network devices and services that share common characteristics, such as location, policies, or functions. A site can have one or more buildings, and a building can have one or more floors. Sites are used to organize and manage the network hierarchy and topology.

Network Settings API: This API allows users to configure and manage network-wide settings, such as global credentials, network discovery, IP address pools, DHCP and DNS servers, and SNMP settings. These settings are applied to all network devices and services that are managed by Cisco DNA Center.

Network Profile API: This API allows users to create, update, delete, and retrieve network profiles in Cisco DNA Center. A network profile is a collection of network settings and policies that define how a network segment or service should operate, such as SSIDs, QoS policies, security policies, and device roles. Network profiles are used to standardize and simplify the network configuration and deployment process, and to ensure consistency and compliance across the network.

Software Image Management API: This API allows users to manage the software images and versions of network devices that are managed by Cisco DNA Center. Users can import, export, delete, and retrieve software images, as well as assign them to network devices or device groups. Users can also schedule and monitor software image updates, and view the software image compliance status of network devices.

 TACACS+ is a protocol that provides authentication, authorization, and accounting (AAA) services for network devices. Unlike RADIUS, which only supports authorization at the user level, TACACS+ supports authorization at the command level. This means that TACACS+ can verify the permissions of the network administrator for every command that is entered, and allow or deny access accordingly. This provides more granular and secure control over network resources and operations. EAPOL, SSH, and RADIUS are not protocols that can provide command-level authorization for AAA. References :=

Some possible references are:

Implementing and Operating Cisco Security Core Technologies (SCOR) v1.0, Module 1: Security Concepts, Lesson 1.2: Network Security Devices and Cloud Services, Topic 1.2.3: AAA

350-701 SCOR - Cisco, Exam Topics, 1.0 Security Concepts, 1.2 Compare network security solutions, 1.2.a AAA

What Is AAA Security? | Fortinet, Authentication, Authorization, and Accounting (AAA)

Mobile device management (MDM) is a solution that allows organizations to monitor and manage mobile devices such as smartphones, tablets, and laptops. MDM provides features such as inventory and device tracking, remote view, live troubleshooting, remote device locking, device wipe, application management, certificate management, and self-service PIN changes. MDM can help organizations secure their devices, control access to corporate data, and enforce security policies on mobile endpoints. Cisco offers MDM solutions such as Cisco Meraki Systems Manager and Cisco Business Mobile app, which are cloud-based and integrated with other Cisco security products. References:

Cisco Meraki Systems Manager

Mobile Device Management in the Meraki Cloud

What Is Endpoint Management?

Device Management using Cisco Business Mobile App

An active/active FlexVPN configuration allows for multiple routers or VRFs to act as hubs for different VPN groups, providing load balancing and redundancy1. This is useful when the VPN deployment has a large number of spokes or different security policies for different groups of spokes. DMVPN, on the other hand, only supports a single hub or a pair of hubs in active/standby mode for each VPN group2. This limits the scalability and flexibility of DMVPN deployments. Therefore, an engineer would opt for an active/active FlexVPN configuration as opposed to DMVPN when multiple routers or VRFs are required. References :=

Cisco FlexVPN: Benefits and Best Practices

Cisco DMVPN Design Guide

Cisco Advanced Phishing Protection (AAP) is a solution that helps organizations protect against fraudulent senders and identity deception-based attacks, such as business email compromise (BEC) and spear phishing. AAP uses advanced machine learning techniques, real-time behavior analytics, relationship modeling, and telemetry to perform two main functions12:

It determines if the email messages are malicious by assessing the threat posture of the sender and the content of the message. It also validates the reputation and authenticity of the sender by checking various indicators, such as the domain, the IP address, the SPF, DKIM, and DMARC records, the display name, the reply-to address, and the header information. AAP assigns a risk score to each email message and provides a verdict of clean, malicious, or suspicious. It also adds a banner to the email message to inform the recipient of the risk level and the recommended action.

It does a real-time user web browsing behavior analysis by monitoring the user’s interaction with the email message and the links embedded in it. It tracks the user’s clicks, mouse movements, dwell time, and other indicators to detect any signs of hesitation, confusion, or curiosity. It also analyzes the destination URL of the links and compares it with the known malicious websites. If AAP detects any anomalous or risky behavior, it intervenes with a warning message or a redirect page to educate the user and prevent them from falling victim to the phishing attack. References := 1: Cisco’s Security Innovations to Protect the Endpoint and Email 2: Cisco Advanced Phishing Protection - Cisco Video Portal