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Chapter 9 System
NWA1121-NI User’s Guide
111
The following table describes the labels in this screen.
9.9 Technical Reference
This section provides some technical background information about the topics covered in this
chapter.
9.9.1 MIB
Managed devices in an SMNP managed network contain object variables or managed objects that
define each piece of information to be collected about a device. Examples of variables include such
as number of packets received, node port status etc. A Management Information Base (MIB) is a
collection of managed objects.SNMP itself is a simple request/response protocol based on the
manager/agent model. The manager issues a request and the agent returns responses using the
following protocol operations:
• Get - Allows the manager to retrieve an object variable from the agent.
• GetNext - Allows the manager to retrieve the next object variable from a table or list within an
agent. In SNMPv1, when a manager wants to retrieve all elements of a table from an agent, it
initiates a Get operation, followed by a series of GetNext operations.
• Set - Allows the manager to set values for object variables within an agent.
• Trap - Used by the agent to inform the manager of some events.
Table 34 System > FTP
LABEL DESCRIPTION
FTP
Port You may change the server port number for a service if needed, however you must use
the same port number in order to use that service for remote management.
Server Access Select the interface(s) through which a computer may access the NWA1121-NI using this
service and to which the IP and MAC filtering rules you specified below are applied.
Otherwise, select Disable to allow any computer to access the NWA1121-NI through any
interface using this service.
Secured Client IP
Address
A secured client is a “trusted” computer that is allowed to communicate with the
NWA1121-NI using this service.
Select All to allow any computer to access the NWA1121-NI using this service.
Choose Selected to just allow the computer with the IP address that you specify to access
the NWA1121-NI using this service.
Secured Client
MAC Address
Select All to allow any computer to access the NWA1121-NI using this service.
Choose Selected to just allow the computer with the MAC address that you specify to
access the NWA1121-NIe using this service.
Apply Click Apply to save your customized settings.
Cancel Click Cancel to begin configuring this screen afresh.