blacklisted 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

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

Sometimes we want the IP address of the Ubuntu14.04 to be static IP address, so that the IP address in Ubuntu is not changed, this will be convenient in the embedded device and host Ubuntu to use the network port for debugging.Static IP address configuration method: In the/etc/network/interfaces file, modify the conten

This article analyses the restrictive IP voting program implemented by PHP. Share to everyone for your reference, specific as follows: Received a polling campaign needs to do IP restrictions, each IP limit a certain amount of voting opportunities. I search the search engine keywords: PHP client IP, the result is basic

The code is as follows Copy Code "Get the address of the visitorIp=request.servervariables ("REMOTE_ADDR")' The allowed IP address segment is 10.0.0.0~10.68.63.255allowip1= "10.0.0.0"Allowip2= "10.68.10.71"Response.writecheckip (IP,ALLOWIP1,ALLOWIP2)Functioncheckip (IP,ALLOWIP1,ALLOWIP2)Dimcheck (4)Checkip=falseIpstr=split (

First step: Add allowed IP segments Start, Run, gpedit.msc, Computer Configuration, Windows settings, security settings, IP Security policy, often to network dedicated IP Security strategy, double hit Open, and then double hit open, then point Add, Next, enter the description, next, the source address selected a specific IP