The DoS attack search and measure method against DoS attack in the wirelss network surroundings

摘要

The present invention relates to a channel avoidance method for detecting an intentional or unintentional Denial of Service (DoS) attack, alerting an administrator of the detected result, and moving to an emergency channel if necessary.;The present invention relates to a method for detecting and coping with DoS attacks or huge traffic in a wireless network environment, comprising: (a) an experience pattern of occupying patterns of physical channels of a specific signal and duration of occupying a physical channel when a DoS attack actually occurs; Therefore, based on the pre-established D / B by estimating the DoS attack, the occupied physical channel of a specific signal through the detection of Received Singnal Strength Indication (RSSI), which is detected when a specific signal is received in a channel used by a wireless main server or a wireless node. Detects DoS attacks by the pattern and duration of occupying the physical channel of a specific signal, or estimates them as huge traffic based on traffic information considering the user's registered ID or wireless node interval service time for the service request signal continuing on the logical channel. Detecting giant traffic based on one D / B; (b) scanning the emergency RF channel preconfigured in the wireless AP according to the DoS attack or the detection of the massive traffic, changing to the emergency RF channel, and transmitting and receiving the emergency RF channel; And (c) alerting an administrator or a network user through the wireless main server, a wireless AP, or a wireless node whether the DoS attack is detected, whether the massive traffic is detected, or whether the emergency RF channel is scanned. We present a detection and countermeasure for DoS attack or huge traffic under the configured wireless communication environment.;Through the present invention through the invention to build a D / B statistically estimated DoS attack by the physical channel occupancy pattern and duration of the specific signal through the RSSI detection in the use channel of the wireless main server or wireless node in the wireless communication environment, In addition, D / B which estimates huge traffic statistically with traffic information of logical channel can be used to detect DoS attack or detect huge traffic based on this, and change emergency channel into emergency RF channel by scanning emergency RF channel. It can be configured to transmit / receive and cope with DoS attack or huge traffic, and alerts administrator or network user whether visual detection of DoS attack, detection of the massive traffic or scan of emergency RF channel through visual / vibration / sound By doing so, it is possible to quickly cope with DoS attacks or huge traffic.;Emergency Channel, DoS Attack, Giant Traffic, RF Channel