Contents

5 Configuring the FrameSaver DSL Router

 

 

FrameSaver DSL Router Overview

5-2

 

 

IP Routing

5-3

 

 

Address Resolution Protocol

5-3

 

 

Proxy ARP

5-3

 

 

Interface Configuration

5-4

 

￿

Network Address Translation

5-5

 

 

IP Options Processing

5-5

 

 

Applications Supported by NAT

5-5

 

 

NAT Configuration Example

5-6

 

 

Network Address Port Translation

5-8

 

 

NAPT Configuration Example

5-8

 

 

NAT and NAPT Configuration Example

5-10

 

 

Dynamic Host Configuration Protocol Server

5-11

 

 

DHCP Server with NAT Configuration Example

5-12

 

 

DHCP Server at Remote Site Configuration Example

5-13

 

 

DHCP Relay Agent

5-13

 

￿

DHCP Relay Configuration Example

5-14

 

￿

Router Security

5-15

 

￿

IP Router Filtering

5-15

 

Bridge Filtering

5-15

 

 

IP Filtering

5-16

 

 

Land Bug Prevention

5-16

 

 

Smurf Attack Prevention

5-16

 

 

Verifying the End-to-End Management Path

5-17

 

 

Provisioning the Router Interface

5-17

 

￿Configuring the Router Using Terminal Emulation

5-18

 

 

Uploading and Downloading the Router Configuration Via the CLI

5-18

6 Security and Logins

 

 

 

Limiting Access

6-2

 

 

Controlling Asynchronous Terminal Access

6-3

 

 

Controlling External COM Port Device Access

6-4

 

￿Controlling Telnet and FTP Access

6-4

 

 

Limiting Telnet Access

6-5

 

 

Limiting FTP Access

6-6

 

 

Limiting Telnet or FTP Access Over the TS Management Link. . .

6-7

 

￿

Controlling SNMP Access

6-8

 

Disabling SNMP Access

6-8

 

Assigning SNMP Community Names and Access Levels

6-9

 

Limiting SNMP Access Through IP Addresses

6-10

9700-A2-GB20-20

December 2002

iii

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Paradyne 9720, 9788 manual Configuring the FrameSaver DSL Router, Security and Logins
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9720, 9788 specifications

The Paradyne 9820-8M, 9788, 9128 standalone, 9128 carrier-mount, and 9820-2M are critical components in telecommunications networks, designed to enhance data transmission and improve connectivity. Each model offers unique features and capabilities that cater to various requirements in both enterprise and service provider environments.

The Paradyne 9820-8M is a multi-service access platform that provides high-speed connectivity for voice, video, and data transmission. It supports multiple protocols, enabling seamless integration into existing infrastructures. Key features include a modular design that allows for scalability and easy upgrades, ensuring that organizations can adapt to evolving demands. Its advanced error correction and QoS (Quality of Service) features ensure reliable performance, even in challenging network conditions.

The Paradyne 9788 serves as a versatile platform for both digital and analog communications. It excels in the delivery of broadband services, supporting T1/E1 lines and providing robust mechanisms for data transmission. This model emphasizes redundancy and resilience, with built-in protection switching capabilities that maintain service continuity during faults or maintenance activities. Its compact design makes it an ideal solution for environments with space constraints.

The 9128 standalone model is aimed at customers requiring an easy-to-deploy solution for point-to-point connections. This model offers critical features such as an intuitive user interface, comprehensive diagnostics, and monitoring capabilities that facilitate system management. It also supports diverse network topologies, making it suitable for various deployment scenarios.

In contrast, the 9128 carrier-mount version is engineered for organizations needing to manage multiple connections within a central office or remote site. This model is specifically designed to be mounted in standard telecom racks, optimizing space utilization while maintaining high performance. Its robust hardware allows for excellent thermal management and environmental resilience.

Lastly, the Paradyne 9820-2M combines versatility with high-performance capabilities, making it a reliable choice for service providers. It features dual-channel support, enabling simultaneous transmission and providing a cost-effective solution for high-capacity data needs. With enhanced security features, including encryption capabilities, the 9820-2M ensures that sensitive information transmitted across networks is protected against unauthorized access.

Collectively, these Paradyne models exemplify advanced telecommunications technology, offering scalability, resilience, and high performance. Their diverse features cater to the unique demands of various users, from enterprise networks to service providers, facilitating the continual evolution of communication technologies.
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