Brief on Wireless Routers

The wireless router (Wireless Router) is like an extended product that combines a simple wireless AP with a broadband router, not only with all the features of a simple wireless AP, such as supporting a DHCP client, supporting a VPN, firewall, supporting WEP encryption, and so on, but also including network address translation (NAT) feature to support network Connection Sharing for LAN users. It can realize the Internet Connection Sharing in the home wireless network, realize the wireless sharing access of ADSL, Cable modem and community broadband. Wireless routers can be connected to all Ethernet-connected ADSL modems or cable modems, or they can be accessed via a LAN mode such as switch/hub and broadband router when used. Its built-in simple virtual dial-up software, can store user name and password dial-up Internet, can achieve dial-up Internet access to ADSL, CM, etc. to provide automatic dialing features, without the need to manually dial or occupy a computer to do server use.

In addition, wireless routers generally have a relatively more complete security protection function. The 3G router is mainly embedded in the wireless 3G module in the original router. First, users use a fee card (USIM card) Plug 3G router, through the operator 3G Network WCDMA, TD-SCDMA and other dial-up networking, you can achieve data transmission, Internet and so on. The router has WiFi function to realize the sharing of the Internet, as long as the mobile phone, computer, PSP has a wireless network card or with WiFi function can access the Internet through the 3G wireless router to achieve wireless LAN sharing 3G Wireless network provides great convenience. Some manufacturers also have wired broadband interface, without 3G can also be normal access to the Internet. Through 3G wireless router, can realize broadband connection, reach or exceed the current ADSL network bandwidth, in the Internet and other applications become very wide.

Advantages

1. Intelligent Management Equipment

Dual Wam3.75gwireless-n Broadband wireless router allows you to enjoy the fast internet life and never lose the line with WiFi security, intelligent management equipped with the latest 3G and Wireless-n technology, free to enjoy the hassle-free network connection, whether in the outdoor meetings, exhibitions , venues, factories, homes. With a LAN interface, this hardware allows your desktop and laptop to enjoy a wired or wireless network. Easily download pictures, high-definition videos, run multimedia software, watch movies or share files with your customers, team members, friends or family. This router can even be used as a printer server, webcam or FTP server to achieve network sharing of hardware.

2. Connect Online Forever

With a wireless router, you can connect a 3g/hsdpausbmodem to its built-in USB interface, which allows you to connect over a 3.5G/HSDPA,3.75G/HSUPA,HSPA+,UMTS,GDGE,GPRS network, or a GSM network. The download rate is up to 14.4Mbps. JGR-N605 supports Ethernetwan interface, which can be used as adsl/cable modem. When a wired network connection fails, it is possible to connect to the 3G wireless network quickly and seamlessly, with maximum connectivity and minimal interference, through the jgr-n605 built-in failover feature. When a wired network recovers, it can also automatically reconnect, reducing or minimizing connection costs. This feature is especially good for office environments, as it is important that the network continues to be connected there.

3. Multi-function Display tool

The unique 3G Management Center is a versatile display tool that visually displays signal conditions that enable users to make the most of their connections. You can monitor bandwidth with upload speed and download speed. This tool can calculate the total amount of data or hours used per month.

4. Gain antenna signal

In the wireless network, the antenna can achieve the purpose of enhancing the wireless signal, it can be understood as the amplifier of the wireless signal.

The antenna has different radiation or reception ability in different directions, and the antenna has both direction and orientation according to the directional difference. Omni-directional antenna: On the horizontal plane, the radiation and receive the antenna without the maximum direction is called omnidirectional antenna. The Omni-directional antenna has no directionality, so it is used in the central station of point-to-point communication.

For example, to establish a wireless connection between the two adjacent buildings, you can choose this type of antenna. Directional antenna: An antenna that has one or more radiating and receiving capacity in the maximum direction is called a directional aerial. Directional antenna energy concentration, the gain relative omni-directional antennas to be high, suitable for long-distance point-to-point communication, at the same time because of the directional, anti-interference ability is stronger. For example, in a community, you need to build a wireless connection across several buildings, you can choose this type of antenna.

Settings

1. wireless setting

1.1.SSID

SSID (Service Set Identifier) ​​is an abbreviation of "service group identifier". It is a wireless network identifier used to identify the identity of a wireless device found on a specific wireless network. All workstations and access points must use the same SSID to communicate with each other. The SSID is a 32-bit data whose value is case-sensitive. It can be the physical location identifier of the wireless LAN, your name, company name, or company name and department, preferred banner, etc., but if you set non-English, garbled characters may appear on some devices, or the connection may not be displayed. On the issue.

1.2. Channel

The channel is also referred to as "Channel", which is a data signal transmission channel using a wireless signal as a transmission medium. Wireless broadband routers can operate on many channels. Various wireless network devices located in the vicinity must be located on different channels, otherwise signal interference will occur. If you only have one device, the default channel value of 6 may be the most appropriate. Unless there is a specific reason to change the channel (for example, if the interference comes from Bluetooth, microwave ovens, mobile towers, or other access points in the area), use the factory defaults. If you have multiple wireless routers and wireless access points on the network, it is recommended to stagger the channels used by each device. For example, the 802.11g and 802.11b wireless standards have 11 channels, but only 3 are non-overlapping channels (Channel 1). , channel 6, channel 11).

2. Wireless router security settings

Compared to wired networks, sending and receiving data over a wireless LAN is easier to eavesdrop. Designing a complete wireless LAN system, encryption and authentication are security factors that need to be considered. The most fundamental purpose of the application of encryption technology in wireless LANs is to enable wireless services to achieve the same level of security as wired services. To this end, the IEEE 802.11 standard uses the WEP (Wired Equivalent Privacy) protocol to set up a special security mechanism to encrypt the service stream and authenticate the node. It is mainly used for the confidentiality of link layer information data in wireless LANs. WEP employs a symmetric encryption mechanism. The encryption and decryption of data uses the same key and encryption algorithm. WEP uses encryption keys (also known as WEP keys) to encrypt the data portion of each packet exchanged on an 802.11 network. When encryption is enabled, two 802.11 devices are communicating and encryption must be enabled and have the same encryption key. WEP encryption is disabled by default, that is, it is not encrypted.

The wireless router cooperates with the wireless network card that supports the encryption function and can encrypt and transmit. Losing data makes it difficult for others to steal your information. WEP encryption levels are 40 (64) bits and 128 bits, and 128-bit encryption is more secure. The WEP key can be a set of randomly generated hexadecimal digits or an ASCII character chosen by the user. In general, we use the latter and enter it manually. Each wireless broadband router and wireless station must use the same key to communicate. However, encryption is optional, and most wireless routers default to disabling encryption. Encryption may have an impact on transmission efficiency.

Other

1.RAM

There are multiple kinds of memory in the router, used as storage configuration, router operating system, routing protocol software, etc. In theory, the router memory is better, but the memory does not directly reflect the performance and capabilities of a wireless router!

In addition, we can also see in the parameter table, "support VPN, self-firewall feature, built-in print server, 64-bit and 128-bit WEP encryption" and other content, these parameters will be based on product prices, positioning differences and differences; some products A USB interface is also included. In terms of security, we pay more attention to the type of encryption supported by the product. The more types that are supported, the higher the security of its nature. At the same time, the more functions it supports, the higher its performance and price. The specific needs of the selection, of course, should be based on their own reality.

2. Configuration

Before configuring the wireless router, you must connect the PC and the wireless router with a network cable. The other end of the network cable must be connected to the LAN port of the wireless router. After the physical connection is installed, to configure the wireless router, you must also know two parameters, one is the username and password of the wireless router; the other is the management IP of the wireless router. The default wireless router's default management IP is 192.168.1.1 or 192.168.0.1 (or other). Both the username and password are admin.

To configure the wireless router, the IP address of the PC and the management IP of the wireless router must be in the same network segment. The subnet mask can be used by default, and the gateway does not need to be set. By 2013, most wireless routers only support Web page configuration and do not support configuration modes such as Telnet.  

In the browser's address bar, enter the wireless router's management IP, the desktop will pop up a login screen, enter the user name and password, we will enter the wireless router configuration interface.  

After entering the wireless router configuration interface, the system will automatically pop up a "settings wizard." In the Setup Wizard, the system only provides settings for the WAN port. Users are advised not to ignore the "Setup Wizard" and go directly to the "Network Parameter Settings" option.