HP Web Jetadmin - Understanding SNMPv3 and HP Web Jetadmin

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UNDERSTANDING SNMPv3

and HP Web Jetadmin

CONTENTS

Overview ................................................................................................................................ 2

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Introduction to SNMPv3 ............................................................................................................ 2

Using HP Web Jetadmin to manage SNMPv3 settings .................................................................. 2

HP Web Jetadmin and credentials .............................................................................................. 3

Discovering SNMPv3 devices .................................................................................................... 4

SNMPv3 passphrases vs. keys ................................................................................................... 5

Notes ...................................................................................................................................... 6

Troubleshooting ........................................................................................................................ 6

Summary of content (7 pages)

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UNDERSTANDING SNMPv3 and HP Web Jetadmin CONTENTS Overview ................................................................................................................................2 Introduction to SNMPv3 ............................................................................................................2 Using HP Web Jetadmin to manage SNMPv3 settings ..................................................................2 HP Web Jetadmin and credentials .........................................
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OVERVIEW SNMPv3 (Simple Network Management Protocol, version 3) is a secure management protocol that is used to encrypt data and require user authentication on devices being managed from within applications like HP Web Jetadmin. HP Web Jetadmin is fully compatible with SNMPv3, but Best practices there are some administrative best practices and When using HP Web Jetadmin to manage rules that should be understood and followed. This SNMPv3 devices, HP Web Jetadmin should document relates to HP Web Jetadmin 10.
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• User Name—The account identity allowed access via SNMPv3. Example: “admin1”. • Authentication Passphrase—The first secure string that is stored securely to the device and that must be validated at each SNMPv3 communication from this point forward. The item is used to allow the device to authenticate the sending entity (HP Web Jetadmin) and the communication being sent. Example: “oncewasasmallcat”.
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Jetadmin, the mode of communication from that point forward includes SNMPv3. • SNMPv3 credentials are stored uniquely in HP Web Jetadmin’s Credentials Store. HP Web Jetadmin begins each communication session by retrieving these credentials and using them to both authenticate and communicate securely with the device. • The Passphrase portion of SNMPv3 credentials are added to HP Web Jetadmin using character strings, such as: “oncewasasmallcat”.
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specific discovery or to a discovery template. Figure 4 (on the previous page) shows the device discovery settings interface that allows adding SNMPv3 and other credentials. This pane is available as “live” discoveries are run or in the Create Discovery Template wizard when you wish to store discovery settings. Another way to ensure SNMPv3 credentials are included in a discovery is to add them to the Global SNMPv3 Credentials feature (Figure 5).
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both HP EWS and HP Web Jetadmin. Therefore, when HP Web Jetadmin is the primary tool for managing a fleet, it is highly advisable to use it exclusively for managing SNMPv3 settings as well. Another big difference between the two SNMPv3 configuration interfaces is the SNMPv1/2 read-write setting. Figure 6 shows a device being configured by HP EWS. Notice that it is possible to leave SNMPv1/2 read-write enabled.
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SNMPv1/2 write-access, HP EWS allows the configuration of simultaneous SNMPv1/2 and SNMPv3 read-write access. This is usually the root of the problem. © 2009-2010 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty.