ZyXEL Communications NWA 1121-NI -, Руководство пользователя

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Chapter 9 System
NWA1121-NI User’s Guide
103
The next figure illustrates an SNMP management operation.
Figure 47
SNMP Management Mode
An SNMP managed network consists of two main types of component: agents and a manager.
An agent is a management software module that resides in a managed device (the NWA1121-NI).
An agent translates the local management information from the managed device into a form
compatible with SNMP. The manager is the console through which network administrators perform
network management functions. It executes applications that control and monitor managed
devices.
SNMP allows a manager and agents to communicate for the purpose of accessing information such
as packets received, node port status, etc.
SNMP v3 and Security
SNMP v3 enhances security for SNMP management. SNMP managers can be required to
authenticate with agents before conducting SNMP management sessions.
Security can be further enhanced by encrypting the SNMP messages sent from the managers.
Encryption protects the contents of the SNMP messages. When the contents of the SNMP messages
are encrypted, only the intended recipients can read them.
Remote Management Limitations
Remote management over LAN or WLAN will not work when:
• You have disabled that service in one of the remote management screens.
• The IP address in the
Secured Client IP Address field does not match the client IP address. If
it does not match, the NWA1121-NI will disconnect the session immediately.