System Configuration

The system configuration module provides host name settings, services of Telnet, SSH, HTTP, HTTPS, and management IP setting. 5.1.1 Host name settings

Select Maintenance > system configuration from the navigation area to enter the system configuration page, as shown in Figure 5-1. User can set the host name of the switch here.

5.1.2 Services Enable

The service management module provides the following types of services: FTP, Telnet, SSH, TFTP, HTTP and HTTPS. You can enable or disable the services as needed. In this way, the performance and security of the system can be enhanced, thus secure management of the device can be achieved.

Telnet Server

The Telnet protocol is an application layer protocol that provides remote login and virtual terminal functions on the network.

SSH Server Secure Shell (SSH) offers an approach to securely logging in to a remote device. By encryption and strong authentication, it protects devices against attacks such as IP spoofing and plain text password interception HTTP Server

The Hypertext Transfer Protocol (HTTP) is used for transferring web page information across the Internet. It is an application-layer protocol in the TCP/IP protocol suite. You can log in to the device using the HTTP protocol with HTTP service enabled, accessing and controlling the device with Web-based network management.

HTTPS Server

The Secure HTTP (HTTPS) refers to the HTTP protocol that supports the Security Socket Layer (SSL) protocol. The SSL protocol of HTTPS enhances the security of the device in the following ways:

Uses the SSL protocol to ensure the legal clients to access the device securely and prohibit the illegal clients; Encrypts the data exchanged between the HTTPS client and the device to ensure the data security and integrity, thus realizing the security management of the device; Defines certificate attribute-based access control policy for the device to control the access right of the client, in order to further avoid attacks from illegal clients.

Configuring service (1) Select Maintenance > system configuration from the navigation area to enter the system configuration page, as shown in Figure 5-2. (2) Check the box in front of the services, Click Apply button to enable service. (3) When HTTPS Server is enabled, the certificate and private key should be uploaded. If no certificate is specified, the device will use the default certificate.

5.1.3 Management IP (1) Select Maintenance > system configuration from the navigation area to enter the system configuration page, as shown in Figure 5-3. Table 5-1 lists the configuration items of the Management IP Address.

File Management

The file management module includes basic information, image management, configuration management, certificate management, and page package management functions. 5.2.1 Basic Information

Select Maintenance > File Management > Basic Information from the navigation area to enter the page as shown in Figure 5-4. In the basic information page, you can view the usage of each partition of the device, and click the Clean button to clear the system log.

5.2.2 Image Management Software upgrade allows you to obtain a target application file from the current host and set the file as the main boot file or backup boot file to be used at the next reboot.

• A software upgrade takes some time. Do not perform any operation on the web interface during the upgrading procedure; otherwise, the upgrade operation may be interrupted.

1.Select Maintenance > File Management > Image Management from the navigation area to enter the page as shown in Figure 5-5.

1. Click Upgrade button, In the pop-up dialog box, select the upgrade file corresponding to the device, the upgrade file is *.bin format, and the upgrade process is shown in Figure 5-6. After upgrade finished, the device will be rebooted.

5.2.3 Configuration Management

Select Maintenance > File Management > Image Management from the navigation area to enter the page as shown in Figure 5-7.

Backup configuration

Click the Backup configuration button, a file download dialog box appears. You can save the file locally.

Restore configuration

After you click the Choose File button in this figure, the file upload dialog box appears. You can select the *. conf file to be uploaded, then the device will be reboot.

Reset to Factory Defaults

This operation restores the system to factory defaults, delete the current configuration file, and reboot the device. Click the Reset to Factory Defaults button to apply this operation. 5.2.4 Configuration Management

When you enable HTTPS, you need to upload the certificate and private key, as shown in Figure 5-8. If you do not specify a certificate, the device uses the default certificate.

5.2.5 Page Package Management

The page package management module provides the ability to obtain the target page package file from the local host and apply the file as a device page package file, as shown in Figure 5-9.

User Management

In the user management part, you can:

Set the username, password.

Create a new user.

Select Maintenance > User Management from the navigation area to enter the User Management page, as shown in Figure 5-10. Table 5-2 lists the configuration items of the User Management.

Time Management

The system time module allows you to display and set the device system time on the Web interface. The device supports setting system time through manual configuration and automatic synchronization of NTP server time.

An administrator cannot keep time synchronized among all the devices within a network by changing the system clock on each device, because this is a timeconsuming task and cannot guarantee clock precision.

Defined in RFC 1305, the Network Time Protocol (NTP) synchronizes timekeeping among distributed time servers and clients. NTP allows quick clock synchronization within the entire network and ensures a high clock precision so that the devices can provide diverse applications based on consistent time. 5.4.1 View the system time

Select Maintenance > Time Management from the navigation area to enter the time management page, as shown in Figure 5-11. The current system time and clock status are displayed. Table 5-3 shows the network time configuration items.

Table 5-3: System time configuration items

Item	Description
Clock	System date and time
Time Zone	Choose time zone
Enable NTP	EnableDisable NTP
NTP Server	Set the NTP server IP address

5.4.2 Configuring System Time

1. Select Maintenance > Time Management from the navigation area to enter time management page.
2. Click synchronous buttonbehind clock, then click Apply button, as shown in Figure 5-12. The time of the pc will be synchronized to the switch.
3. Click Save of the auxiliary area.

5.4.3 Configuring NTP Server

1. Select Maintenance > Time Management from the navigation area to enter time management page.
2. Enable NTP
3. Type 202.120.2.101 in the NTP Server IP box, as shown in Figure 5-13, click Apply.
4. Click Save of the auxiliary area.

SNMP

Simple Network Management Protocol (SNMP) offers the communication rules between a management device and the managed devices on the network; it defines a series of messages, methods, and syntaxes to implement the access and management from the management device to the managed devices. SNMP has the following characteristics:

• Automatic network management. SNMP enables network administrators to search and modify information, find and diagnose network problems, plan for network growth, and generate reports on network nodes.
• SNMP shields the physical differences between various devices and thus realizes automatic management of products from different manufacturers. Offering only the basic set of functions, SNMP makes the management tasks independent of both the physical features of the managed devices and the underlying networking technology. Thus, SNMP achieves effective management of devices from different manufacturers, especially in small, high-speed, and low-cost network environments.

SNMP mechanism An SNMP enabled network comprises Network Management Station (NMS) and agent.

• An NMS is a station that runs the SNMP client software. It offers a user-friendly interface, making it easier for network administrators to perform most network management tasks.
• An agent is a program on the device. It receives and handles requests sent from the NMS. Only under certain circumstances, such as interface state change, will the agent inform the NMS. NMS manages an SNMP enabled network, whereas agents are the managed network device. NMS and agents exchange management information through the SNMP protocol.

SNMP provides the following four basic operations:

• Get operation: NMS gets the value of a certain variable of the agent through this operation.
• Set operation: NMS can reconfigure the value of one or more objects in the agent MIB (Management Information Base) by means of this operation.
• Trap operation: The agent sends traps to the NMS through this operation.
• Inform operation: The NMS sends traps to other NMSs through this operation.

SNMP Configuration (1) Select Maintenance > SNMP from the navigation area to enter the SNMP page, as shown in Figure 5-15. (2) Select the SNMP version, configure the user, authentication encryption password, Trap host, and click the Apply button to complete the configuration.