wireless network channels, which is a bit the same as normal mailing. If we do not encrypt the data files, we can directly transfer them in the wireless network, the wireless workstation around the local wireless network may intercept data files that do not adopt encryption protection measures, and the data files sent locally will leak the privacy information; if we do not want these data files to leak external privacy information, we should encrypt them or take other security measures before t
Hostapd introduction:
To put it simply, hostapd can switch the wireless network adapter to the master mode and simulate the AP (which can be considered as a router) function, that is, the soft AP we call it ).
As an AP authentication server, hostapd is responsible for controlling and managing the access and authentication of stations (usually a PC with a wireless network card.
You can use hostapd to switch the wireless network adapter to the AP/master mode. By modifying the configuration file, y
: - #two categorized messages that specify a path within the code + #Output: A #null (Results of print Bayesian classification test) at #============================================= - defspamtest (): - 'test Bayesian Classification and print results' - - #Document String Collection -doclist=[] in #Document Classification Collection -Classlist = [] to #All Strings +Fulltext =[] - the #remove 25 messages from each of the two classified messages to get a collectio
,listclass)
testentry=[' love ', ' my ', ' dalmation ']
thisdoc=array (Setofwords2vec )
print (Testentry, ' classified as ', CLASSIFYNB (thisdoc,p0v,p1v,pab))
testentry=[' stupid ', ' garbage ']
Thisdoc=array (Setofwords2vec (myvoc,testentry))
print (Testentry, ' classified as ', CLASSIFYNB (Thisdoc, P0V,P1V,PAB))
Consolidate the above steps and use two test cases
Test results:
Use naive Bayes to filter spam
def textparse (bigstring):
import re
listoftoken
Although my system is already ubuntu7.10, although ndiswrapper is installed smoothly, wireless networks are used well at home. However, the WPA enterprise wireless network in the school has never been successfully set up, and the results were not good for one night and one morning.
During the processing, the original home network could not be connected, and last night it was quite depressing.
After being confused, I finally realized that wireless is
HOSTAPD Introduction:
Simply put, HOSTAPD can make the wireless card switch to master mode, analog AP (usually can be considered as a router) function, that is, we say the soft AP (Soft AP).
The function of HOSTAPD is to be the AP's authentication server, which is responsible for the access and authentication of the management stations (which can usually be considered as a PC with a wireless network card).
By HOSTAPD, the wireless network card can be switched to Ap/master mode, and an open (unen
Wireless encryption is commonplace. For wireless users, encryption does not play any role, but can only prevent general security problems. However, in terms of password cracking, our encryption method is a fragile piece of paper. However, we must learn more about wireless encryption methods to protect our networks.
Wireless encryption method 1: WEP Encryption
A moderate-tech wireless hacker can quickly crack WEP encryption within two to three minutes. Although WEP has been proven to be outdated
Host environment: Gentoo Linux 3.1.10The WPA Supplicant toolkit allows you to connect to those APs that use WPA. Because it is only a beta version, its configuration method will often change-even so, it can work well in most cases.After wap_supplicant is installed, you can configure the Wireless Access Point Network by modifying/etc/wpa_supplicant/wpa_supplicant.conf.The following is an instance of the conf
; 2] "Use the established classification model to train and test the ad classifier ' Def spamtest (): DocList = [] #文档列表, a list containing multiple lists Classlist = [] #类别列表 # fulltext = [] #词集列表 for I in range (1): Wordlist = testparse (open (' h:/email/spam/%d.txt '% i) . Read ()) Doclist.append (wordlist) #fullText. Extend (wordlist) classlist.append (1)
LeetCode127-Word ladder
Given two words (beginword and endword), and a dictionary's word list, find the length of shortest transformation sequence from beginword to endword, such that:
Only one letter can be changed at a timeEach intermediate word must exist in the word listFor example,
Given:Beginword = "hit"Endword = "cog"Wordlist = ["hot", "dot", "dog", "lot", "log"]As one shortest transformation is "hit"-> "hot"-> "dot"-> "dog"-> "cog ",Ret
Synchronizedsortedset (SortedSet ss)These methods basically return a new class with a synchronous collection method version. For example, to create a list that is multithreaded and secure and supported by ArrayList, you can use the following code:List List = Collection.synchronizedlist (new ArrayList ());Note that the ArrayList instance is immediately encapsulated and there is no direct reference to the unsynchronized ArrayList (that is, to encapsulate the anonymous instance directly). This is
Import java.util.*;
Public class Safecollectioniteration extends Object {
public static void Main (string[] args) {
//For security purposes, use only one reference to the synchronization list to ensure that all access is controlled
//collection must be synchronized, here is a list
List wordList = collections.synchronizedlist (new ArrayList ());
the Add method in//wordlist is the s
the wireless network aroundParameter en0 is the default NIC for my computer, the number 6 is the network channel that the NIC needs to listen:Sudo/system/library/privateframeworks/apple80211.framework/versions/current/resources/airport En0 Sniff 6When you execute the above command and start listening, the wifi icon will change to a small eye-like icon:Listen for a bit longer, then use Ctrl + C to stop listening, the system will listen to the data saved to the local, such as, the data saved to t
Setting up Wi-Fi with the Command lineSIMON MONKThis tutorial works best if your router is broadcasting the SSID. Make sure the "broadcast SSID" set up on your router! This could not work with "private" SSID setupsSetting up WiFi in occidentalis, is also pretty straight forward. You just need to add the name of your wireless network (its SSID) and your password to a configuration file.Step 1.Boot the Raspberry Pi without the WiFi adapter plugged in.Step 2.Open a Terminal session by clicking on t
As the wireless LAN to radio waves as a data transmission medium, so the security issue will always bring home users more or less threat, and then we choose to support the WPA protocol in the number of IP806LM wireless router, as an example, hands-on teaching you to carry out Wireless LAN Security settings.
Change the default wireless network name
Each wireless network has a distinguished name, known as the Wireless Network name (network name) or th
1. Access WiFi
1.1 wireless peer-to-peer Security WEP (Wired Equivalent Privacy)
WEP adopts RC4 symmetric encryption technology at the link layer. The user's encryption key must be the same as the AP's key to allow access to network resources, thus preventing unauthorized user listening and unauthorized user access. WEP provides a 40-bit and 128-bit key mechanism, but it still has many defects. For example, all users in a service area share the same key, if a user loses a key, the entire network
Recently, some media reported the exposure of Wireless LAN security vulnerabilities. At the wireless LAN security technology seminar held on the afternoon of June 13, September 11, the demonstration staff conducted a security test on the client. The tool downloaded from the internet cracked the password protection within five minutes. After quickly cracking the chindejine wireless network key, you can easily connect to the encrypted wireless LAN to obtain various confidential information and ema
4.a. IntroductionYou can now configure your wireless network using the Wireless-tools or Wpa_supplicant tools we provide. Keep in mind that the important thing is that your wireless network configuration is global, not specific to the interface.Wpa_supplicant is one of the best options, but the downside is that it doesn't support all drivers. Please browse to get the list of drivers it supports. In addition, Wpa_supplicant currently can only connect to those wireless networks that you have confi
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