Neglected Broadband Router Functions

Many additional Broadband Router functions are ignored by users, such as VPNPass-through, DMZ host, virtual server, dynamic Domain Name Service, and universal plug-and-play UPnP and log functions. Who has used these hidden functions?

Neglected Broadband Router Functions

For networks with multiple computers or networks that need to share the Internet with others, it is extremely important to buy a router with routing functions. However, many users only pay attention to common metrics such as stability and throughput when purchasing or using vrouters. Is it just for these reasons? You cannot "Ignore" the painstaking Design of many network equipment manufacturers, nor "Ignore" those functions that play a significant role. Today, I will introduce the five most powerful and easy-to-be-ignored functions.

VPNPass-through

Shortly after arriving at a logistics company, Li Linggang received a call from Manager Li of the network Department asking her to buy a router. Because the company is headquartered in Beijing, and the branch computer often needs to access the internal server of the headquarters to obtain data, Manager Li also stressed that the router must have the "VPNPass-through" function. This can make Li Yan worried. What is the VPNPass-through function? Fortunately, she has a cousin who is engaged in the Internet ......

To understand VPNPass-through, you must first know what VPNVirtualPrivateNetwork is.) It does not have a dedicated network physical connection, but uses a public network such as the Internet) establish a temporary, secure, and simulated point-to-point connection. We can also call it "network in the network" as a bit of a TV image ).

Nowadays, many organizations or individuals use vro sharing to access the Internet. To establish a VPN, The vro must have the VPNPass-through function. The function of passing VPN packets is called VPNPass-through ), this function supports the client's VPN outbound and receive feedback packets. With this function, other computers in the network can establish virtual connections with external VPN servers. Currently, there is also a VPNServer router that supports dial-in. It not only supports the VPNPassthrough function, but also works on the workstation below to smoothly establish a connection with the VPNServer. It is also a VPNServer, all functions of VPNServer are available.

Ignore the bandwidth router function 2: DMZ host, Virtual Server

The neighbor's son is a BT madman. Recently, he heard that DMZ and virtual servers in the vro can help him download BT in a more crazy way. If he doesn't know much about the vro, he will find my master ...... The full name of DMZ is DemilitarizedZone ".

It is a buffer zone between a non-security system and a security system to solve the problem that external networks cannot access internal network servers protected by firewalls, this buffer zone is located in a small network area between the enterprise's internal network and the external network. Some public server facilities can be placed in this small network area, such as Enterprise Web servers, FTP servers, and forums. Using this DMZ area is equivalent to adding a level to the firewall to effectively protect the internal network.

The virtual server can perform destination address translation to map the IP address and port number of the WAN port to the IP address of the server in the LAN, and all the service ports of the WAN port, such as the FTP service port) will be redirected to the corresponding internal port of the server in the specified LAN. That is, you can set up virtual servers to access internal servers from the Internet and enjoy services such as Web, E-mail, and FTP.

In fact, the DMZ host is actually a default virtual server. If the device receives a connection request from an external network, it first looks for the virtual service list. If there is a matched project, send the request message to the corresponding virtual server. If no matching item is found, it is forwarded to the DMZ host. In an environment where multiple people share a vro to access the Internet, if a user frequently downloads BT and wants to speed up, he can enable DMZ or create a dedicated BT virtual server.

Feature 3: Dynamic Domain Name Service

WANG Xing, who has recently become fascinated by website production, has bought a lot of books about website construction from Xinhua Bookstore, and has spent some rest time viewing relevant website tutorials on the Internet. "I want to create a dynamic domain name, but what should I do ?" The introverted Mr. Wang asked me about his work. "You can set it in your vro ." Can a vro be set? Wang started his research immediately after sending the ticket away ......

The Dynamic Domain Name Service is short for DDNS, that is, Dynamic Domain Name Service. For users who use ADSL Broadband Internet access, a new IP address is assigned for each dial-up. When the DDNS service is enabled, the resolution service between a fixed domain name and a dynamic IP address can be automatically implemented. For example, the IP address of a Google website is 64.233.189.104, and we usually use its domain name "www.google.com" for access, because this domain name is easy to remember;

However, when we access the Internet through ADSL, the IP addresses assigned each time are different. Therefore, static IP addresses cannot be directly parsed, however, some dynamic Domain Name Service websites can be used to resolve dynamic IP addresses to fixed domain names. In this way, others can also use a fixed domain name to enjoy the services provided on your computer, such as websites and FTP ).

Ignore the Broadband Router function 4: Universal plug-and-play UPnP)

"Why do I always prompt that a connection cannot be established when I use MSN Messenger, QQ, and other tools for voice chat or file transmission in these two LAN networks ?" Liu, who had just joined the internet group for an Internet cafe in the county, went to the computer city early in the morning to seek help from Ma Tao. "Check whether the router has enabled UPnP ." "Is there an UPnP in the router? What is UPnP ?"

UPnP Universal Plug-and-Play (Universal Plug and Play) is an Internet Protocol Based on TCP/IP protocol and communication between devices, after devices with UPnP technology are physically connected to the network, they can be automatically connected through the network. Similar to our USB protocol, devices using USB interfaces can be automatically recognized by the system.

Note that enabling UPnP also brings some risks to the network, because not only QQ and MSN can map the local port to the gateway device port, but other "UPnP" applications can also, in addition, if a device with the UPnP function is connected to the network, a "notification" will be sent to the network, indicating that it is ready and can accept control from the network, if a hacker sends an instruction to the UPnP system, the system responds to the instruction.

Ignore the bandwidth router feature 5: log feature

Poor parenting in the world. During the holidays, the children are surfing the internet at home, but the parents of Zhang Meng Want To Know What website their children are on. When Zhang Meng's father asked some computer experts for help, most of them recommended to him the installation of key records or network father software. In fact, they ignored the "logs" in the vro to achieve the goal.

The system "log" can record various settings, errors, and operations that occur on a daily basis. It can be used to check the causes of errors. The "Log" in the vro records the network connection, access, or attack information. Therefore, you can view the network access connection information, you can also view the traces left by the attacker when the network or vro is under attack. Many home broadband routers now have the "log" function, which is also very simple.