how to prevent spoofing

first three-bit decimal number by 256^3 or 16,777,216 (256 of 3): 172*16,777,216=2,885,681,152Multiply the second three-bit decimal number by 256^2 or 65,536 (256 of the 2 Parties): 168*65,536=11,010,048Multiply the third three-bit binary number by 256 (256 of 1): 23*256=5,888Finally, multiply the fourth three-bit binary number by 1 (256 of 0): 113*1=113Add the final result of the above four formulas: 2,885,681,152+11,010,048+5,888+113=2,896,697,201Finally this decimal number is the last equiva

This article mainly introduces how to send arp spoofing attacks in python. the following code prevents such attacks: #-*-Coding: cp936 -*-From scapy. all import *From threading import Thread, Lock, activeCount BROADCASTMAC = getmacbyip ('192. 168.0.120 ') Class Loop (Thread ):Def _ init _ (self, ip ):Thread. _ init _ (self)Self. ip = ipDef run (self ):Global BROADCASTMACArp = ARP ()Arp. psrc = '192. 168.0.20'Arp. hwsrc = BROADCASTMACArp. pdst = s

A simple example of phpcurl spoofing ip address $ Ch = curl_init (); Curl_setopt ($ ch, CURLOPT_URL, "http: // localhost/index. php "); $ R = revert (1,255 ); Curl_setopt ($ ch, CURLOPT_HTTPHEADER, array ('x-FORWARDED-FOR: 8.8.8. '. $ r, 'client-IP: 125.8.8. '. $ r); // Construct an IP address Curl_setopt ($ ch, CURLOPT_REFERER, "http://bbs.it-home.org"); // Construct a path Curl_setopt

ConfigurationIP DHCP relay information trust-allIOU4 ConfigurationIP DHCP relay information trust-all650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/79/8E/wKiom1aUk-HSIxTmAABJGPo84kg620.png "title=" d2.png "alt=" Wkiom1auk-hsixtmaabjgpo84kg620.png "/>After configuring DHCP snooping, IOU5 IP is 4.4.4.0 the IP segment of the network multiple times by DHCP.This article is from the "Open Source Hall" blog, please be sure to keep this source http://kaiyuandiantang.blog.51cto.com/10699754/

Supplement the URL Spoofing with treasure! Processing of data submitted by POST method!(This is also awkward !) First, we will build an environment:IIS proxy for the jsp page under Resin! (Resin is a Java application server) 1. Obtain Resin:Http://www.caucho.com/download/resin-2.1.16.zipDecompress a directory after the download, for example:E:/Resin/resin-2.1.16/ 2. Configure Resin (the Java SDK configuration will not be described in detail)Open in a

In Ubuntu system, if you want to download the JDK files in Orcale directly through wget, it is generally impossible. So you have to use a special method.First find the download link for the JDK version you need to download on the website:After clicking on Accept License Agreement, right click on the Linux file you want to download, right-clicking on it and selecting "Copy link Address" to get the file download path.For example, to download the Linux x64 version file Jdk-6u45-linux-x64.bin, the r

addresses to access the network.A: IP address conflicts in the network are very troublesome. On the one hand, they disrupt the network management of our network administrator, and on the other hand, they affect the normal internet access of normal users. Especially for some small and medium-sized enterprises, IP addresses are often associated with the access permissions of network resources. Once the IP address is occupied by illegal users, the network resources can be illegally used. In this c

1. # ARP-A>/etc/ethers import the IP address and MAC address to Ethers 2. # vi/etc/EthersEdit the file format. The content of the ethers file must be deleted in any of the following formats.192.168.1.x XX: xx 192.168.1.x XX: xx... // Note that Mac is capitalized, and there is no o, only zero, IP and Mac Space 3. # vi/etc/rc. d/rc. Local // open and display the/etc/rc. d/rc. Local file and the startup Item file.# I // Edit// Execute ARP-f at startup to bind according to the content in/etc/EthersA

I have published an article about how to prevent forgery of X-Forwarded-For when multiple proxies exist. This is only applicable to the use of proxy servers. Although this problem rarely occurs when the proxy server is not used, some silly PHP programs cannot be ruled out. If the content of X-Forwarded-For is not empty, it will take the initiative to use it as the visitor's real IP address. If CDN is used, the visitor's normal IP address can be obtai

Prevent departing employees from taking customers away, prevent internal employees from leaking data, and prevent Huawei employees from leaking data. Preventing leaks of departing employees and internal employees is an important aspect of enterprise management. In particular, with the popularization of Enterprise Information Technology, employees' daily work is c

A: Hanging horse prevention measures: 1, the user is advised to upload and maintain the Web page through FTP, try not to install the ASP upload program. 2, the ASP upload program calls must be authenticated, and only allow trusted people to use the upload program. This includes a variety of news releases, mall and forum procedures, as long as the ASP can upload files to be authenticated! 3, the ASP program Administrator user name and password to have a certain complexity, not too simple, but als

of D. Forward the data packets sent by A to C, just like A router. However, if D sends ICMP redirection, the entire plan is interrupted. D. directly modify and forward the entire package, capture all the packets sent by A to C, and then forward them to C, the packets received by C are completely considered sent from. However, the packets sent by C are directly transmitted to A, if the ARP spoofing to C is performed again. Now D has completely become

PPPoE authentication when accessing the Internet. This method is also used to prevent ARP attacks. The PPPoE dialing method encapsulates packets twice so that they are not affected by ARP spoofing. Many people think that they have found the ultimate solution to ARP problems. The problems are mainly focused on efficiency and practicality: 1. PPPoE needs to encapsulate packets twice and then unencapsulate

PHP uses the session to prevent pages from repeating the refresh, phpsession prevent page How to prevent the page from repeating the refresh, in the PHP environment can use the session to easily implement. B.php's Code can only be accessed via postif ($_server[' request_method '] = = ' GET '){header (' http/1.1 404 Not Found '); Die (' Pro, page not present

Php prevents websites from being refreshed and php prevents refreshing. Php methods to prevent websites from being refreshed. php methods to prevent websites from being refreshed. examples in this article describe php methods to prevent websites from being refreshed. Share it with you for your reference. The specific method is as follows: for php to

Is development using the tb framework still used to prevent SQL injection? How to prevent SQL injection? Is it possible to prevent SQL injection for tb Framework development? How to prevent SQL injection? How can this problem be solved? Reply content: Is development using the tb framework still used to

ARP attack is a major hidden danger of Internet Café Network security, it is also the scourge of Internet Café Administrator. It is much easier and more important to prevent ARP attacks than to resolve ARP attacks. How to prevent ARP attack, protect Internet bar network security? You may refer to the following methods: In the case of normal network, record the Ip/mac table in the Backup network, check the

Now the main tool is to touch the SDK, in order to prevent the game pack from being cracked compiled, and to discover the encrypted string, I would like to share the following points: anti-cracking technology is mainly four ways to achieve: 1. Code obfuscation (Proguard) technology 2. Technology Dynamic Library Technology of signature comparison 4. Dynamic loading Technology 5. Third-party platform encryption and detection vulnerability this Android s

Now the main tool is to contact the SDK, in order to prevent the game pack to be cracked compiled, as well as find the encryption string, I would share the following points:There are four main ways to implement anti-cracking technology:1. Code obfuscation (Proguard) technology2. Signature Alignment Technology3.NDK. So dynamic Library technology4. Dynamic Loading Technology5. Third-party platform encryption and detection vulnerabilitiesThis article als

How can I prohibit copying computer files, prevent computer files from being leaked, and prevent Enterprise Data leaks?How Can Enterprises and institutions effectively protect computer file security and prevent leakage through various channels. I recommend a dedicated software to protect computer files.First of all, we need to download "disabled to the USB port t