spoof ip

Take a look at the code: Copy CodeThe code is as follows: echo "(1) The IP address of the user browsing the current page is:"; echo $_server[' REMOTE_ADDR ']; echo " "; echo "(2) the IP address of the user browsing the current page is:"; echo getenv (' remote_addr '); echo " "; echo "host www.baidu.com's IP address is:"; Echo gethostbyname (www.baidu.com); It

PHP Limits IP Address range method, PHP limit IP range This article explains how PHP restricts the range of IP addresses. Share to everyone for your reference. Specific as follows: Only IP addresses within a limited scope can be accessed function get_real_ipaddress () {if (!empty ($_server[' http_client_ip ')) { retu

With the increasing popularity of the Internet, the number of Internet users more and more, the number of visits to the major sites increased, especially many task sites or registration sites, in order to prevent malicious registration, will increase access, click, and so on a variety of restrictions, the most common is the IP limit. However, many users such as companies, schools, etc., in the same local area network users, the external

In the LAN, we often encounter the situation of IP address conflict, in fact, because others arbitrarily modify the IP address caused by, this article for you to introduce some methods to prohibit the modification of IP address. 　　How to prohibit the modification of IP address the first recruit: Cut off the

Ip subnet-zero and ip classless usage if you have a class c ip address, such as 192.168.10.0, you want to divide it into eight CIDR blocks, each of which can contain 32 hosts, subnetmask is: 192.168.10.0-31, broadcast address: 192.168.10.31 192.168.10.32-63, broadcast address: 192.168.10.32, broadcast address: 192.168.10.63, broadcast address: 192.168.10.63 192.1

Php checks and verifies that the IP address is a valid IP address. Before php5.2, if we want to verify whether the IP address is valid, we need to use regular expressions to verify that the IP address is valid. if it is valid, we need to call ping, but before php5.2, if we want to verify whether the

It turns out that you need to turn IP into decimal. Copy the Code code as follows: $ip = $_server[' remote_addr '); echo ' Your IP: '. $ip. ' '; $ip _arr = Explode (".", $ip); $ip = 0

The database stores approximately hundreds of thousands of IP records, with the following record set: +----------+----------+------------+---------+---------+--------+--------+ | Ip_begin | Ip_end | country_id | prov_id | city_id | isp_id | Netbar | +----------+----------+------------+---------+---------+--------+--------+ | 0 | 16777215 | 2 | 0 | 0 | 0 | 0 | | 16777216 | 33554431 | 2 | 0 | 0 | 0 | 0 | | 33554432 | 50331647 | 2 | 0 | 0 | 0 | 0 | | 503

192.168.1.1 Single IP Address 192.168.1. * proxy 192.168.1.1-192.168.1-255 192.158.1.2-20 represents 192.158.1.2-192.158.1.20 You can also write 192.168.1. [1 | 2 | 3] Hey hey ~ I don't know whether the idea is comprehensive in one method. I will discuss it with you. Use The following is a reference clip: $ Oblock_ip = new block_ip (); $ Oblock_ip-> checkip (); The following is a reference clip: CopyCode The Code is as follows: Class block_ip { VaR $

The system public function for obtaining the Client IP address in TP is: function get_client_ip (). The returned value is the IP address.The class file for querying the country and region of the IP address is iplocation. Class. php, which is located in the thinkphp \ Lib \ org \ net directory. The class name is iplocation, and the method is public function getloc

Http://www.smohan.net/blog/14.html Before the station using Taobao interface to achieve IP and geographical information conversion, seemingly recently Taobao IP server error, resulting in file_get_contents can not get content and JSON return, so, for a more stable Sina IP address library to achieve some of the functions of this site. Sina provides open

Detailed steps are as follows: 1. Open Management Tools ... Local Security Policy ... Right-click IP Security Policy, on the local computer ... Create IP Security Policy ... Right-click to manage IP filter tables and filter actions ... Select the Admin filter Action Bar, click Add, filter action name, (here we fill in the name of the rejection) next, will appear

for many friends who have just come into contact with Linux, how to set the IP address of the Linux system, as the first step, the following small series of CentOS system as an example, to show you how to set the IP address of the CentOS , how do I modify the Linux system IP address? Linux systems, CentOS View

is with IP conflict resolution This situation is mainly due to other computers under the router is also using your computer's IP address, resulting in IP address conflicts, there is no access to the Internet and so on. The main reasons for this situation are: 1, the local computer uses the 192.168.1.1 IP address, an

) attack. in these attacks, a malicious party intercepts a legitimate communication between two friendly parties. the malicious host then controls the flow of communication and can eliminate or alter the information sent by one of the original participates ipants without the knowledge of either the original sender or the recipient. in this way, an attacker can fool a victim into disclosing confidential information by "spoofing" the identity of the original sender, who is presumably trusted by th

Today's IP networks use 32-bit addresses, represented in dotted decimal notation, such as 172.16.0.0. The address format is: IP address = network address + host address or IP address = Host address + subnet address + host address.IP address typeIn the initial design of the interconnected network, to facilitate addressing and hierarchical network construction, eac

Let's see.Code: Copy code The Code is as follows: Echo "(1) the IP address of the user who browses the current page is :"; Echo $ _ server ['remote _ ADDR ']; Echo "Echo "(2) the IP address of the user browsing the current page is :"; Echo getenv ('remote _ ADDR '); Echo "Echo "the IP address of the host www.baidu.com is :"; Echo gethostbyname (The output resul

nginx prohibit IP access to prevent the specified IP access to our site, this example can be implemented to prevent single IP access or IP network segment access, very useful let's have a look. Common Linux PracticesIptables Reference Rules The code is as follows Copy Code Iptables-i

Php code for restricting access from a single IP address and ip address segment I will share two pieces of php code that limits IP address access. There are two examples of code: restrict access from a single IP address and restrict access from an IP address segment

Before php5.2, if we want to verify whether the IP address is valid, we need to use regular expressions to verify that the IP address is valid. If it is valid, we need to call ping, but after php5.2.0, there are special functions to make this judgment. I will summarize these functions below Determine whether the IP address is valid The Code is as follow