Laptops that used to be able to connect to a wireless network now have a situation where the wireless network cannot connect (the connection is missing or no longer connects to the wireless network). Possible causes are:
Wireless devices are not installed properly or disabled
A hardware failure occurred on a wireless device or router
Network configuration changes (SSID or security)
Interference from other wireless devices
Note:
Not all laptops a
Find a wireless network
Finding a wireless network is the first step in an attack, where two common tools are recommended:
1, Network Stumbler a.k.a NetStumbler.
This windows-based tool makes it very easy to find radio signals that are broadcast in a range, and to determine which signals or noise information can be used for site measurements.
2, Kismet.
A key feature of the lack of NetStumbler is to show which wireless networks do not have a broadcast S
before you write a brief introduction to the problems found:
A mobile phone to create hot "mini", b mobile phone in connection with hot spots, the connection of the SSID is called "haha", then use Enablenetwork (NetID, True) method, connection a created hot "mini", the general process is to disconnect the "haha", connect " Mini "hot spots, in this process, most of the mobile phone will be successfully connected to the" mini ", but some mobile phones s
If there are two or more network access points in an area, how can a device (for example, a notebook) identify signals from these access points?
First, each WiFi device has its own unique physical address that has been set up at the factory and can be reconfigured. For example, a Linksys WiFi 5 Hertz Wireless access point Physical address may be 00:25:9c:57:0c:0f, this address is included in each frame sent by the router, so other wireless devices can distinguish who sent this frame.
Second, e
, to solve the problem of wireless network security, we must start with the people who use the wireless network, strengthen their security awareness, strengthen their security technology means. At present, many people on the wireless network related security technology is only a smattering.
Below, this article will focus on the industry to exclude wireless network security risks of the eight mainstream technology of their pros and cons and the scope of application, hope to be in the confusion o
or call.
◆ What is the SSID?
In short, the SSID is the name of a LAN. Only computers or devices with the same name and SSID can communicate with each other. The SSID is usually broadcast by the AP. For security reasons, the SSID can not be broadcast. In this case, you need
In the previous article "Android Development Practice: The encapsulation of WiFi scanning function" describes how to use the Andriod API to achieve WiFi scanning, this article will focus on how to connect WiFi bar, here, also give a package of WiFi connection process class, Provides a simple interface for reuse in individual code projects.Like a WiFi scan, a WiFi connection is also a time-consuming process, so it needs to be executed in a thread, notifying the caller of the connection result wit
to provide unlimited access to the network and obtain key data through spoofing. Without knowing it, the wireless LAN User thought that he was connected to the wireless LAN through a good signal, but he was not aware that he had been listened to by hackers. With the low cost and ease of configuration, wireless LAN is becoming increasingly popular. Many users can also set up wireless base stations (WAPS) in their traditional LAN ), the backdoor programs installed by some users on the network als
network cards to build their own wireless networks to Hook Fish. Most wireless network cards support shared wireless connections and work in "ad-hoc" peer connection mode. After enabling the peering mode, hackers can set an SSID for wireless broadcast.
Peer-to-peer mode allows computers to connect to the network through other computers
In order to make careless users easy to hook up, Hackers often prepare a tempting
With the rapid development of China's wireless router industry, there are also a large number of users, and many problems will be encountered by the masses, so I have studied some protective measures for wireless routers, I would like to share it with you here and hope it will be useful to you. Wireless routers have gradually become the first choice for home users to build important devices in wireless networks. Compared with wired networks, their randomness and flexibility are the main advantag
Introducing detailed measures for wireless route security protection, wireless routers have gradually become the first choice for many home users to build important devices in wireless networks. Compared with wired networks, its randomness and flexibility are the main advantages. Ordinary home users can access the Internet anytime and anywhere through wireless routing security protection at home. However, due to the strong openness of wireless networks, its security is difficult to guarantee.
Cu
1. Connect to the vroThe terminal connects to the vro through a wireless network adapter. Open the browser, enter 192.168.1.1 in the address bar, press enter, and enter admin in the pop-up password input dialog box. After entering the information, click enter or log on, enter the vro management interface, as shown in the following figure (this device is not inserted with a China Unicom SIM card, but does not affect the basic wireless settings ):2. Set basic wireless signal parametersClick "
Raspberry Pi Raspberry Pi wireless NIC configuration [multiple method alternatives]To make the Raspberry Pi convenient operation, it is necessary to configure the wireless network card, which can greatly enhance the mobile and convenience of Raspberry Pi, in fact, the configuration of wireless network card is basically the same as the normal Linux platform configuration wireless network card, several methods are similar, the following:One, the first method: through the configuration of the/etc/n
One, the first method: through the configuration of the/etc/network/interfaces file implementationsudo nano/etc/network/interfacesThe contents of the modified file are as follows:Auto LoIface Lo inet LoopbackIface eth0 inet DHCPauto wlan0allow-hotplug wlan0iface Wlan0 inet dhcpwpa-ssid " Your WiFi name "WPA-PSK" Your WiFi password " The specific lines are configured as follows: auto Lo//indicates the use of LOCALHOSTiface Eth0 inet DHCP//indicates th
The wireless network brings us a lot of convenience, he let us no longer have to worry about cable line, but also make notebook these mobile devices are more mobile (do not need to consider the length of network cable). But also because wireless networks are connected by wireless electromagnetic waves, wireless networks are more vulnerable to intrusion than wired networks connected by physical wiring. However, as long as we use the wireless network to pay attention to some of the following issue
With the development of routers in China, wireless routers are widely used. Here we will introduce the configuration of wireless routers in detail. Recently, wireless networks are gaining momentum, and the slogan of popularizing wireless networks further occupies the market. The price of a wireless router product package also drops, but many friends encounter various problems during the installation and configuration of the Wireless Router Network.
This article describes how to operate the wirel
); config. allowedPairwiseCiphers. set (WifiConfiguration. pairwiseCipher. CCMP); "these two statements, otherwise, you cannot join the network when a password is required for a Wi-Fi hotspot.
(3) The method IsExsits is added at the end of the code because if the specified wifi is successfully added according to the method described on the Internet, A network with the specified ssid will be added to the wifi list of the terminal. Therefore, each time
. After the connection is established, You can further obtain additional configuration information for the active network connection. Use the getConfiguredNetworks function to obtain the list of current network configuration information. The returned value is the WifiConfiguration object, which contains the network ID, SSID, and other configuration information.To use a network connection, you can use the enableNetwork function to pass in the network I
Previously, we introduced in principle the security threats faced by wireless home networks and how to reinforce the security of wireless home networks, in the next article, we will introduce the specific setup process through the actual setup instance. This article describes how to modify a default Wireless Router password until you enable wireless encryption.
Wireless network settings 1. Modify the default vro Password
As mentioned above, wireless broadband routers or wireless devices produced
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