User Authentication 3

be configured locally on the switch via the User Accounts page as described on page 3-53.)The clients are subsequently authenticated using these keys. The current firmware only accepts public key files based on standard UNIX format as shown in the following example for an RSA Version 1 key:

1024 35 1341081685609893921040944920155425347631641921872958921143173880

055536161631051775940838686311092912322268285192543746031009371877211996

963178136627741416898513204911720483033925432410163799759237144901193800

609025394840848271781943722884025331159521348610229029789827213532671316

29432532818915045306393916643 steve@192.168.1.19

4.Set the Optional Parameters – On the SSH Settings page, configure the optional parameters, including the authentication timeout, the number of retries, and the server key size.

5.Enable SSH Service – On the SSH Settings page, enable the SSH server on the switch.

6.Challenge-Response Authentication – When an SSH client attempts to contact the switch, the SSH server uses the host key pair to negotiate a session key and encryption method. Only clients that have a private key corresponding to the public keys stored on the switch can access it. The following exchanges take place during this process:

a.The client sends its public key to the switch.

b.The switch compares the client's public key to those stored in memory.

c.If a match is found, the switch uses the public key to encrypt a random sequence of bytes, and sends this string to the client.

d.The client uses its private key to decrypt the bytes, and sends the decrypted bytes back to the switch.

e.The switch compares the decrypted bytes to the original bytes it sent. If the two sets match, this means that the client's private key corresponds to an authorized public key, and the client is authenticated.

Notes: 1. To use SSH with only password authentication, the host public key must still be given to the client, either during initial connection or manually entered into the known host file. However, you do not need to configure the client’s keys.

2.The SSH server supports up to four client sessions. The maximum number of client sessions includes both current Telnet sessions and SSH sessions.

Generating the Host Key Pair

A host public/private key pair is used to provide secure communications between an SSH client and the switch. After generating this key pair, you must provide the host public key to SSH clients and import the client’s public key to the switch as described in the preceding section (Command Usage).

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Microsoft ES4649, ES4625 manual Generating the Host Key Pair
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ES4649, ES4625 specifications

The Microsoft ES4625 and ES4649 are advanced enterprise-grade servers designed to meet the demands of modern data centers. They blend cutting-edge technology with robust performance, making them an ideal choice for businesses that require reliable processing capabilities, enhanced storage solutions, and improved energy efficiency.

One of the standout features of the ES4625 is its powerful processing capability. Equipped with the latest Intel Xeon Scalable processors, the server can handle a significant workload, making it suitable for various applications, including virtualization, cloud computing, and big data analytics. The multi-core architecture allows for efficient parallel processing, thereby improving response times and overall system performance.

On the other hand, the ES4649 offers an even more powerful setup, with the option to support high core counts and a larger memory footprint. This feature is particularly beneficial for enterprises that run demanding applications requiring substantial processing power and memory capacity. Both models support DDR4 memory, ensuring faster data access and overall system efficiency.

Storage adaptability is another key characteristic of these servers. The ES4625 and ES4649 come with multiple drive bays supporting various storage options, including SSDs and traditional HDDs. This flexibility allows organizations to configure their storage according to their specific performance and capacity needs. With support for advanced storage technologies like NVMe, enterprises can achieve unparalleled data transfer speeds, which is crucial for data-intensive applications.

In terms of manageability, both models are equipped with Microsoft’s innovative management tools. The integration of these tools facilitates easy monitoring, troubleshooting, and maintenance of server health and performance, significantly reducing downtime. Moreover, the servers are designed with enhanced security features to protect against unauthorized access and data breaches, ensuring that sensitive information remains secure.

Energy efficiency is another critical characteristic of the ES4625 and ES4649. These servers are designed with power-saving technologies that reduce energy consumption without compromising performance. This aspect is particularly advantageous for businesses looking to lower their operational costs and carbon footprint.

Overall, the Microsoft ES4625 and ES4649 offer a compelling combination of performance, flexibility, and security. They are engineered to support the increasingly complex demands of modern enterprise environments, making them a valuable investment for organizations seeking reliable, high-performing server solutions. Whether for virtualized workloads, cloud services, or heavy data computations, these servers are designed to deliver exceptional results.
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