Wireless network failure to handle itself

With the popularity of wireless, wireless networks are also entering the network deployment of many enterprises. People in the work can be convenient and efficient use of wireless networks, enjoy the convenience of wireless. However, sometimes when you turn on the computer, ready to dash on the Internet, enjoy the fun of the network, but found that wireless network is not even, is it a bit disappointing? But we can not always encounter such a problem on the company network management to find to deal with this simple thing or do it yourself. The following is my use of wireless network encountered "Symptoms more typical" a case of fault handling, I hope that you can deal with wireless network failure can be inspired.

A day after the normal boot, found that the wireless network card has been prompted "connecting." Check the network, found that in fact, can be normal internet, but is always prompted "connecting." Because it feels so bad, manually disconnect the network and want to reconnect. When the problem came out, when I disconnected the network, I could no longer search the network. Restart the computer and still be unable to search the network. No way, had to restart the route, not surprisingly the problem remains.

Careful observation of the wireless card lights, there is nothing unusual; touch it with your hands without overheating or smelling the odor. Check the wireless router, the wireless LED is flashing normally, and the temperature is within normal range. No line by, wireless network card hardware is normal, it seems that the problem should be in the relevant settings.

Network environment is very simple, the Internet is via ADSL plus no Line by way, in order to secure, no line from the on off the SSID broadcast and enabled WEP encryption. Because it is indoors, such a close distance should not have the problem of receiving no signal. Before the failure of the wireless card is always in the "connecting" state, will it be the protocol out of the question? Because of the job needs, I have a number of other network protocols installed, so that only the most commonly used protocols, but still can not connect the network.

What exactly is the problem? Fault is so strange, let a person not to start. So calm down the network connection process carefully adjusted.

When the Internet, first wireless network card should receive wireless signal and identify SSID, and then match the protocol, and finally connected to the network. Now that the fault is not able to connect to the network, is there a problem with the SSID? Remove the original preferred network (figure), and then add one again, or not. (Computer science)

At this time I think of the possibility of one by one, but the problem is still there, which details are not analyzed? So I concentrated my thoughts on the line. The router setup has not moved before and after the fault, because it used to be so, the setting should not have a problem. But from the symptom, the network hint cannot connect, the problem may only appear in the client, the client and the router connection and the router three aspects, but the former both have already ruled out. If there is a problem with the router, where is the problem? A sudden flash of light, I thought I was in the routing settings to disable the SSID broadcast, there should be nothing wrong, but if there is a bug in the route, will not ...?

Immediately log on to the route, on the route on the "Allow SSID broadcast" hook and save (as pictured), router prompts need to reboot. After the reboot, the network prompts the connection to be successful and the fault is eliminated.

To verify that the fault may have been due to a routed bug, I logged on again and canceled the "Allow SSID broadcast" and the network connection remained normal.

Review and summarize the process of fault handling

1, the beginning of the network has been prompted "is connected" but can be normal internet, may be the network protocol too much caused.

2, disconnect the network can not connect, may be the network is connected in the process of a sudden disconnect, resulting in no line by the function failure, although the wireless led on the route on the normal flashing. This should be the design flaw of the routing software.

Here we can find a potential denial of service attack in a wireless network, as long as the SSID broadcast is turned on. As long as you find ways to extend the network connection between the wireless network card and the wireless router (normally, this process is very short), such as adding many network protocols or unusual network protocols, and then immediately disconnect the network, then some design defective wireless router wireless function will fail. It is therefore advisable to turn off the SSID broadcast feature when using wireless Internet access.