
Manage the Global SNMPv1 Get Community Names
The SNMP Get Community Name object is congurable from within security settings. It can actually cause a
device to disappear. For example:
User A is running an instance of HP Web Jetadmin known as Web Jetadmin A. This user is managing a set of
devices that are also being managed by User B. User B is running another copy of HP Web Jetadmin known as
Web Jetadmin B. This B copy of HP Web Jetadmin is being used at the help desk.
User B tries to provide a measure of security by changing the default Get Community Name on the set of devices
from public to private using HP Web Jetadmin. User A opens HP Web Jetadmin and notices that all the
devices have become non-responsive and show only a device communication error. Quick Device
Discovery
does not help. Upon checking the printer itself, User A nds it to be powered on. User A can also reach
the printer web server in
terface through a browser.
CAUTION: Changing the Get Community Name can cause devices to become unresponsive to management
applications such as HP Web Jetadmin. The SNMP pro
tocol will no longer respond to public queries and other
management applications on the network will not be able to communicate with these devices.
Use the following steps to congure this option:
1. On the top menu bar, access Tools
> Options > Shared > Credentials > Device > SNMPv1 Get Community
Name.
2. To add a community name, click
Add and type the community name. Enter an associated (or easier) name
in Remember credential as and click OK.
3. To remove a Get Community Name, click
Remove.
Manage the Global SNMPv1 Set Community Names
The SNMP Set Community Name is a grouping mechanism for SNMPv1/v2 that has been adopted as a security
mechanism by many customers. De
vice conguration is not possible without knowledge of the Set name value.
The Set name value traverses the network in clear text and can be easily detected by eavesdroppers.
Use the following steps to congure this option:
1. On the top menu bar, access Tools
> Options > Shared > Credentials > Device > SNMPv1 Set Community
Name.
2. To add a community name, click
Add and type the community name. Enter an associated (or easier) name
in Remember credential as and click OK.
3. To remove a Set Community Name, click
Remove.
Manage the Global SNMPv3 Credentials
SNMPv3 secures and authenticates communication between management applications, such as
HP Web Jetadmin, and devices. SNMP
v3 is used when strong security is a requirement.
SNMPv3 credentials consist of a user name, authentication protocol, authentication passphrase, private protocol,
and privacy pas
sphrase. HP Web Jetadmin uses these credentials when SNMPv3 is enabled.
IMPORTANT: SNMPv3 does not support the No Authentication Protocol and No Privacy Protocol modes.
56 Chapter 2 Introduction to HP Web Jetadmin ENWW
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