The rapid development of wireless network technology, as well as its simple and flexible way of surfing the Internet, has flown into thousands of households in just a few years. "Wireless router+wireless network card" is the most commonly used way to surf the Internet. However, after many friends switched to the embrace of wireless networks, they became "acclimatized" and could not easily control their own wireless "sharp weapon". In the final analysis, people still don't know enough about wireless networks.
UPnP makes communication smoother.
Many users report that it is impossible or slow to download using BT software, and MSN Messenger, an instant messaging software, cannot conduct voice chat and file transfer. After switching to wireless network, why is this problem? In fact, the key question is whether your wireless network has "UPnP" function. Don't underestimate this humble "Dongdong". Using it well can solve big problems.
The above problems are generally users who change from dial-up internet access to wireless internet access. This is because no matter using MSN Messenger for voice chat and file transfer, or using BT to download software, you need to open additional ports. For example, MSN Messenger should open the ports of TCP 689 1~6900 for file transmission and UDP 5004-65535 for voice and video communication.
Many users surf the Internet through wireless routers, that is, they are in the intranet. At this time, in order to ensure the normal work of MSN Messenger and BT software, these extra ports must be opened in the wireless router. Manual port mapping is very troublesome. Fortunately, most wireless routers support the "UPnP" function, but the default setting is off. As long as you start this function manually, you can automatically complete the port mapping operation, so that MSN Messenger, BT and other software can work normally.
Taking TL-WR54 1G wireless router of TP-LINK as an example, this paper introduces how to enable UPnP function.
1. First, make sure that the client is normally connected to your wireless network, then run IE browser, enter "192.168.1/"in the address bar, and press Enter, where "192./kloc-" 46637.666666666667
2. Expand the "forwarding rules →UPnP settings" item in turn to enter the "UPnP settings" window. By default, the UPnP function is turned off. To enable this feature, just click the "Enable UPnP" button. In this way, your wireless network will start the UPnP function, and MSN Messenger, BT and other software will work normally.
DMZ "publishes" FTP service
As the saying goes, "All for one, all for one", many wireless network users want to make some contributions to their compatriots while enjoying network resources, so they set up FTP servers at home, but then problems followed, and they could not successfully publish FTP services to the Internet.
Usually, users only need to map the ports used by network services in the wireless router, such as the default "80" port used by the Web server, so that other friends in the public network can access the network resources provided by you.
However, the release of FTP service is quite special. FTP service supports two connection modes, namely "port" and "PASV". In order to ensure that other intranet users on the Internet can access your FTP server normally, you should generally support PASV mode. In this way, you should not only map the "2 1" and "20" ports on the wireless router, but also map the high-end ports used by the FTP server to transmit data. It is very troublesome and unwise to map these high-end ports manually. Which high-end port of the server is used to establish an FTP connection? The user is not clear. Fortunately, many wireless routers provide the function of "DMZ host", which can completely expose intranet machines to the Internet and allow other users to access your FTP service without port mapping.
After understanding the reasons why the FTP server is not published successfully, we can use the "DMZ host" function of the wireless router to publish FTP services. I still take the TL-WR54 1G wireless router of TP-LINK as an example to introduce it.
1. Expand "Forwarding Rules →DMZ Host" in the router management interface.
2. Enter the intranet IP address of your FTP server behind the "DMZ host IP address" in the right frame, such as "192.168.1.28", then make sure to select the "Enable" option, and finally click the "Save" button to "release" the FTP service to the Internet.