This article introduces two functions one is to verify the IP address, the other is to obtain the user's real IP address of the function, is also commonly used two IP operation function, the need for students can refer to.
1. Get the user's real IP address
function get_client_ip () {if (getenv ("REMOTE_ADDR") STRCASE
[Php] obtains the IP address by using the Sina api interface and php to obtain remote data, and obtains the corresponding IP address. this article and [Servlet] Javaweb use the Sina api interface, get the IP address and obtain the corresponding IP address location (click to open the link) as a companion article, but th
Set network, IP address, and CentOS network IP address
1. log on to CentOS.
2. # dhclient automatically obtains the IP address
3. # ip addr
1). the first address 127.0.0.1 is the loopback address, and the NIC name is lo. This address is also available in Windows and can be used to communicate with you.
2). The s
Tip: http://www.pcworld.com.cn/how_to_use/1/2006/0707/6804.shtml
Introduction: in Linux, you sometimes need to bind multiple IP addresses to a network card. This article describes the RedHat series (RedHat, Fedora Core, centos) and a method that is widely used in other Linux systems such as Gentoo.
In Linux, you sometimes need to bind multiple IP addresses to a network card. This article describes the RedHa
IP address, subnet mask, network number, host number, network address, host address, IP address
IP Address: 4-segment decimal, 32-bit binary, for example, 192.168.1.1 binary is: 11000000 | 10101000 | 00000001 | 00000001The subnet mask shows how many bits are the network number and how many bits are the host number.: 255.255.255.0 binary: 11111111 11111111 1111111
Next, summarize the network layer protocol,IP,ARP,RARP,ICMP,IGMP. When we are in the process of network transmission, the delivery of packets to the host or router requires a level two address: Physical address and logical address. And we need to be able to map the physical address to the corresponding logical address, and the reverse mapping is also necessary.There are two concepts involved: static mapping and dynamic mapping .Static mapping is the c
In centos, you sometimes need to bind multiple IP addresses to one network card. This article describes the Redhat series (redhat, FedoraCore, Centos) and a method that is widely used in other Linux systems such as Gentoo. 1. how to bind multiple IP addresses to a single Nic in the CentOS series. assume that the NIC to bind multiple IP addresses is eth0. create o
PHP restricts IP segment access, prevents IP from submitting the form's code
Recently, the small series found that there is a Yunnan netizen often in help the home to publish some rubbish information comment, because www.bkjia.com system dedecms frame, systems itself does not prohibit the IP function, every day see these rubbish comment, although not many, but l
If in our VPS, the server needs to be for an IP or an IP segment shielding, directly can be added in the Nginx and Apache rules, such use is often useful, such as not to allow a User IP address access or spider crawling information, or even some collection, mirror IP address shielding need to use. Although the current
When CentOS is installed, the reboot displays the following screen:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/5A/DB/wKioL1T-q2zhDaxXAAFWt6pO7PE812.jpg "title=" QQ picture 20150310162439.jpg "alt=" Wkiol1t-q2zhdaxxaafwt6po7pe812.jpg "/>Log in to the system with the root user:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/5A/DB/wKioL1T-q5aAmzoTAADu17PAUQw832.jpg "title=" QQ picture 20150310162525.jpg "alt=" Wkiol1t-q5aamzotaadu17pauqw832.jpg "/>The command to view
How to make the VMware IP on the same network segment as the native IPoriginal May 08, 2017 17:28:56
1287
First verify that the native IPYou can see the information:Native ip:192.168.1.162Gateway: 192.168.1.1DNS server: 192.168.1.1There are two types of virtual machine network adapters: VMnet1 and VMnet8.
View Virtual Machine network adapters
To open the virtual Machine Wor
TCP/IP Note 2. Network Layer (1) -- IP, subnet, CIDR1. IP1.1 supporting agreementIP is one of the two most important protocols in the TCP/IP system.There are also four protocols used in combination with the IP protocol:(1) ARP (Address Resolution Protocol) Address Resolution Protocol(2) RARP (Reverse Address Resolution
PHP restricts IP access and only allows access from specified IP addresses
/**
* Check whether the Accessed ip address is a specified allowed ip address.
* Enter description here...
*/
Function check_ip (){
$ ALLOWED_IP = array ('192. 192. 2. * ', '192. 0
Today, we have encountered the problem of implementing multi-network segments in Linux. In the past, we only had to pay attention to how to modify the Linux route. When using the 2003 system, we often access multiple network segments with a single Nic. The premise is to bind an IP address for each CIDR block first. Similarly, if we need to enable the Linux Nic to access multiple network segments, we must first bind multiple
1. static IP routing 1. 1. A simple route table
Routing is one of the most important functions of the IP layer. The previous section briefly describes the rules used by the router to select a route based on the IP address of the IP packet. We will not repeat it here. First, let's look at a simple system route table.Des
Label: style blog HTTP color AR for SP Div log Public static string getipaddr (httpservletrequest request ){
String IP = request. getheader ("X-real-IP ");
If (! Stringutils. isblank (IP )! "Unknown". inclusignorecase (IP )){
Return IP;
}
Tags: sys ref linux 16px today font input dev secondaryToday, when viewing a virtual machine, you find that a network card contains multiple IP addresses:eno16777736: theQdisc Pfifo_fast State up Qlen +Link/etherxx: 0c: in: 6b:a5:a2 BRD ff:ff:ff:ff:ff:ff inet192.168.213.132/ -Brd192.168.213.255Scope Global Dynamic eno16777736 valid_lft 1726sec preferred_lft 1726sec inet192.168.213.34/ -Brd192.168.213.255Scope Global Secondary eno16777736 valid_lft fo
Ec (2); obtain the user's IP address and determine the real IPfunctiongetIp () { nbsp; if ($ _ SERVER [HTTP_CLIENT_IP]) nbsp; nbsp; { nbsp; return $ _ SERVER [HTTP_CLIENT_IP]; nbs script ec (2); script
Obtain the user IP address and determine the real IP AddressFunction getIp (){If ($ _ SERVER ['HTTP _ CLIENT_IP ']){Return $ _ SERVER ['HTTP _ CLIENT_IP '];}
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