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Technical Reference, 9.9.1 MIB

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Chapter 9 System The following table describes the labels in this screen. Table 34 System > FTP LABEL FTP Port Server Access Secured Client IP Address DESCRIPTION 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. 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. 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. Secured Client MAC Address Apply Cancel Choose Selected to just allow the computer with the IP address that you specify to access 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 MAC address that you specify to access the NWA1121-NIe using this service. Click Apply to save your customized settings. Click Cancel to begin configuring this screen afresh. 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. NWA1121-NI User's Guide 111

Section	Page
NWA1121-NI	1
Contents Overview	3
Table of Contents	5
User’s Guide	9
Introducing the NWA1121-NI	11
1.1 Introducing the NWA1121-NI	11
1.2 Wireless Modes	11
1.2.1 MBSSID	11
1.2.2 Wireless Client	13
1.2.3 Root AP	14
1.2.4 Repeater	14
1.3 Ways to Manage the NWA1121-NI	15
1.4 Configuring Your NWA1121-NI’s Security Features	16
1.4.1 Control Access to Your Device	16
1.4.2 Wireless Security	16
1.5 Good Habits for Managing the NWA1121-NI	16
1.6 Hardware Connections	17
1.7 LED	17
Introducing the Web Configurator	19
2.1 Accessing the Web Configurator	19
2.2 Resetting the NWA1121-NI	20
2.2.1 Methods of Restoring Factory-Defaults	21
2.3 Navigating the Web Configurator	22
2.3.1 Title Bar	22
2.3.2 Navigation Panel	23
2.3.3 Main Window	24
Dashboard	25
3.1 The Dashboard Screen	25
Tutorial	29
4.1 How to Configure the Wireless LAN	29
4.1.1 Choosing the Wireless Mode	29
4.1.2 Further Reading	29
4.2 How to Configure Multiple Wireless Networks	29
4.2.1 Configure the SSID Profiles	31
4.2.2 Configure the Standard Network	33
4.2.3 Configure the VoIP Network	34
4.2.4 Configure the Guest Network	36
4.2.5 Testing the Wireless Networks	38
4.3 NWA1121-NI Setup in AP and Wireless Client Modes	38
4.3.1 Scenario	38
4.3.2 Configuring the NWA1121-NI in MBSSID or Root AP Mode	39
4.3.3 Configuring the NWA1121-NI in Wireless Client Mode	42
4.3.4 MAC Filter Setup	44
4.3.5 Testing the Connection and Troubleshooting	45
Technical Reference	47
Monitor	49
5.1 Overview	49
5.2 What You Can Do	49
5.3 View Logs	49
5.4 Statistics	50
5.5 Association List	51
5.6 Channel Usage	52
Wireless LAN	55
6.1 Overview	55
6.2 What You Can Do in this Chapter	55
6.3 What You Need To Know	56
6.4 Wireless Settings Screen	60
6.4.1 Root AP Mode	61
6.4.2 Repeater Mode	64
6.4.3 Wireless Client Mode	67
6.4.4 MBSSID Mode	69
6.5 SSID Screen	72
6.5.1 Configuring SSID	73
6.6 Wireless Security Screen	74
6.6.1 Security: WEP	76
6.6.2 Security: 802.1x Only	77
6.6.3 Security: 802.1x Static WEP	79
6.6.4 Security: WPA, WPA2, WPA2-MIX	83
6.6.5 Security: WPA-PSK, WPA2-PSK, WPA2-PSK-MIX	86
6.7 RADIUS Screen	87
6.8 MAC Filter Screen	89
6.9 Technical Reference	91
6.9.1 Additional Wireless Terms	91
6.9.2 WMM QoS	92
6.9.3 Security Mode Guideline	93
LAN	94
7.1 Overview	94
7.2 What You Can Do in this Chapter	94
7.3 What You Need to Know	94
7.4 LAN IP Screen	96
VLAN	98
8.1 Overview	98
8.1.1 What You Can Do in This Chapter	98
8.2 What You Need to Know	98
8.3 VLAN Screen	99
System	101
9.1 Overview	101
9.2 What You Can Do in this Chapter	101
9.3 What You Need To Know	102
9.4 WWW Screen	104
9.5 Certificates Screen	105
9.6 Telnet Screen	106
9.7 SNMP Screen	107
9.8 FTP Screen	110
9.9 Technical Reference	111
9.9.1 MIB	111
9.9.2 Supported MIBs	112
9.9.3 Private-Public Certificates	112
9.9.4 Certification Authorities	112
9.9.5 Checking the Fingerprint of a Certificate on Your Computer	112
Log Settings	115
10.1 Overview	115
10.2 What You Can Do in this Chapter	115
10.3 What You Need To Know	116
10.4 Log Settings Screen	116
Maintenance	119
11.1 Overview	119
11.2 What You Can Do in this Chapter	119
11.3 What You Need To Know	120
11.4 General Screen	120
11.5 Password Screen	121
11.6 Time Screen	122
11.7 Firmware Upgrade Screen	123
11.8 Configuration File Screen	124
11.8.1 Backup Configuration	124
11.8.2 Restore Configuration	124
11.8.3 Back to Factory Defaults	125
11.9 Restart Screen	125
Troubleshooting	127
12.1 Power, Hardware Connections, and LEDs	127
12.2 NWA1121-NI Access and Login	128
12.3 Internet Access	129
Setting Up Your Computer’s IP Address	131
Pop-up Windows, JavaScript and Java Permissions	159
IP Addresses and Subnetting	171
Wireless LANs	179
Legal Information	193

Match case Limit results 1 per page

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.