258SSH host keys

Methods for Protection

In many environments, it may be reasonable for a SSH client user to simply accept the key from a previously unknown remote server host when prompted by the client, but to achieve strict protection against a "man in the middle" attack against this very first connection, one of these methods can be used:

•Verifying the "fingerprint" (as displayed by the client) of the new remote host key by some out-of-band means (e.g. verbal communication with the server administrator).

OR

•Pre-installing the remote host key (previously transferred by some out-of-band means) in the client’s key storage, i.e. effectively making the remote host known even before the first connection.

The server administrator also needs to be able to generate new keys (e.g. at initial configuration, or in case the old ones are believed to be compromised), and the client user needs to be able to remove remote host keys that are no longer valid from the client’s key storage (e.g. due to the server administrator having generated new keys).

Nortel VPN Gateway

User Guide

NN46120-104 02.01 Standard

14 April 2008

Copyright © 2007-2008 Nortel Networks

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Nortel Networks NN46120-104 manual Methods for Protection
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NN46120-104 specifications

Nortel Networks NN46120-104 is a versatile and efficient telecommunications hardware platform designed to meet the demands of modern networking environments. As a part of Nortel’s extensive portfolio, this device showcases the company’s commitment to innovation and reliability in the telecom sector.

One of the main features of the NN46120-104 is its robust performance capabilities. This platform is capable of handling high traffic volumes, making it suitable for medium to large enterprises. With its advanced routing capabilities and support for various protocols, the device ensures seamless communication across multiple network segments, providing efficient data transfer and connectivity.

The NN46120-104 is built upon the foundation of Nortel's renowned Layer 3 switching technology. This allows it to intelligently direct data packets based on their IP addresses, optimizing both speed and reliability. The inclusion of Virtual LAN (VLAN) support enhances network segmentation, improving security and management while reducing broadcast domains.

In terms of interface options, the NN46120-104 supports an array of Ethernet configurations, including Gigabit and Fast Ethernet ports. This flexibility allows organizations to tailor their networking solutions to their specific needs while enabling easy upgrades as technology evolves. The device also supports Power over Ethernet (PoE), facilitating the deployment of powered devices like IP phones and wireless access points without the need for additional power sources.

Another significant characteristic of the NN46120-104 is its robustness in terms of security features. With support for advanced security protocols and features such as Access Control Lists (ACLs), the device helps safeguard sensitive data by controlling traffic flow and restricting unauthorized access.

Additionally, the NN46120-104 is designed for ease of management. It offers an intuitive interface and supports various management protocols, including Simple Network Management Protocol (SNMP), enabling administrators to monitor and configure the device efficiently.

In summary, the Nortel Networks NN46120-104 combines high performance, extensive connectivity options, advanced security features, and ease of management, making it a formidable choice for enterprises looking to enhance their network infrastructure. Its capabilities align well with the rigorous demands of today’s digital communication landscape, ensuring reliability and efficiency in organizational operations.
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