Chapter 1 Overview

RADIUS Protocol

Table 1-1

RADIUS Packet Fields (continued)

 

 

 

 

 

Fields

 

Description

 

 

 

 

Authenticator

Contains a value for a Request Authenticator or a Response

 

 

 

Authenticator. The Request Authenticator is included in a client’s

 

 

 

Access-Request. The value is unpredictable and unique, and is

 

 

 

added to the client/server shared secret so the combination can be

 

 

 

run through a one-way algorithm. The NAS then uses the result in

 

 

 

conjunction with the shared secret to encrypt the user’s password.

 

 

 

 

Attribute(s)

Depends on the type of message being sent. The number of

 

 

 

attribute/value pairs included in the packet’s attribute field is

 

 

 

variable, including those required or optional for the type of service

 

 

 

requested.

 

 

 

 

The Attribute Dictionary

The Attribute dictionary contains a list of preconfigured authentication, authorization, and accounting attributes that can be part of a client’s or user’s configuration. The dictionary entries translate an attribute into a value Cisco Access Registrar uses to parse incoming requests and generate responses. Attributes have a human-readable name and an enumerated equivalent from 1-255.

Sixty three standard attributes exist, which are defined in RFCs 2865, 2866, 2867, 2868, and 2869. There also are additional vendor-specific attributes that depend on the particular NAS you are using.

Some sample attributes include:

•User-Name—the name of the user

•User-Password—the user’s password

•NAS-IP-Address—the IP address of the NAS

•NAS-Port—the NAS port the user is dialed in to

•Framed Protocol—such as SLIP or PPP

•Framed-IP-Address—the IP address the client uses for the session

•Filter-ID—vendor-specific; identifies a set of filters configured in the NAS

•Callback-Number—the actual callback number.

Proxy Servers

Any one or all of the RADIUS server’s three functions: authentication, authorization, or accounting can be subcontracted to another RADIUS server. Cisco Access Registrar then becomes a proxy server. Proxying to other servers enables you to delegate some of the RADIUS server’s functions to other servers.

You can use Cisco Access Registrar to “proxy” to an LDAP server for access to directory information about users in order to authenticate them. Figure 1-2shows user joe initiating a request, the Cisco Access Registrar server proxying the authentication to the LDAP server, and then performing the authorization and accounting processing in order to enable joe to log in.

Cisco Access Registrar 3.5 Concepts and Reference Guide

1-4

OL-2683-02

 

 

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Cisco Systems 3.5 manual Proxy Servers, Attribute Dictionary
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3.5 specifications

Cisco Systems 3.5 is an advanced version of Cisco's renowned networking and security solutions. This iteration showcases significant enhancements in performance, scalability, and security, making it a preferred choice for enterprises aiming to optimize their network operations and bolster their cybersecurity posture.

One of the main features of Cisco Systems 3.5 is its enhanced network automation capabilities. Automation streamlines network management, allowing organizations to apply consistent policies across their infrastructure while minimizing human error. This version employs advanced algorithms and machine learning to predict and rectify network issues proactively. With automation tools, network administrators can configure, monitor, and troubleshoot their networks with unprecedented efficiency.

Another notable characteristic of Cisco Systems 3.5 is its integration of artificial intelligence and machine learning into networking processes. The incorporation of AI enhances decision-making by analyzing vast amounts of network data, identifying patterns, and offering insights that help ensure optimal performance. This predictive analytics capability allows organizations to predict potential disruptions before they impact operations.

Security is a major focus in Cisco Systems 3.5. The platform introduces advanced threat detection and response systems that utilize deep learning to identify and mitigate emerging threats in real-time. Enhanced encryption protocols ensure that data transmitted over the network remains secure, protecting sensitive information from cyber threats. The integrated security features ensure compliance with various regulatory standards, a crucial requirement for businesses across multiple sectors.

The platforms' support for Software-Defined Networking (SDN) allows for dynamic resource allocation and traffic management. This flexibility enables organizations to adjust their network resources quickly in response to changing demands, leading to improved efficiency and reduced operational costs. Cisco Systems 3.5 also supports multicloud environments, facilitating seamless integration with cloud services such as AWS, Google Cloud, and Microsoft Azure.

Moreover, Cisco Systems 3.5 offers robust telemetry features, providing detailed real-time insights into network performance and health. This data-driven approach allows organizations to make informed decisions regarding capacity planning and resource optimization.

In summary, Cisco Systems 3.5 combines cutting-edge technologies such as AI, machine learning, and SDN to deliver a comprehensive networking solution. With its focus on automation, enhanced security, and multicloud support, this version is well-suited for modern enterprises looking to enhance their network infrastructure and security measures. As organizations continue to evolve in a digital-centric world, Cisco Systems 3.5 stands out as a critical tool to achieve connectivity and security goals effectively.
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