what is primary domain

For a new site, it is generally impossible to get the favor of search engines from the very beginning, especially for a site that has just been launched without any weight, in addition, some webmasters use second-level domain names as sub-stations.

Javascript cross-origin reasons and solutions, javascript Causes of cross-origin problems Cross-origin is restricted by the browser same-origin policy. The js of the current domain name can only read window properties in the same

Multiple methods for implementing cross-origin in js, Starting from the domain Domain:The domain is the security boundary of the WIN2K network system. We know that the most basic unit of a computer network is "Domain", which is not unique to WIN2K,

First, Single Sign-On must depend on the client, that is, the client must return the ID to the server. This is the principle. There are three basic single-point logon solutions. 1. Session 2. Cookies 3. url Because the client can only save

In the previous tutorial, Wei Seo has already shared the meaning and role of 301 redirection. Here, Wei Seo also needs to add its role, that is, when our website is doing domain name resolution, two domain names are often resolved, that is, those

I read dudu's issue about the second-level domain name Cookie and Its Solution early this morning. I think the dudu principle is not very clear and I cannot determine the dudu code. FormsAuthentication. SetAuthCookie and add subordinate

This article mainly introduces the self-organizing network routing protocols used in the self-group network. This article gives some specific instructions on these protocols, I believe that reading this article will help you. The cluster head

The principle of DNS and its analytic process "wonderful anatomy" 2012-03-21 17:23:10Tags: dig wireshark bind nslookup DNS original works, allow reprint, when reproduced please be sure to use hyperlinks in the form of the original source of the

I. jsonp In fact, I thought that jsonp could use ajax to access other people's program code at will, but I found that it was not what I imagined, because jsonp had to change the server code. How can someone else's server code be changed? Unless

In the process of website optimization, SEO tools often find a phenomenon: for example, the result of site: leoit.cn is higher than that of site: www.leoit.cn, which is very unfavorable to our website optimization, because the target website we are

This article provides 301 redirection in the form of text and text. I have talked about many related tutorials before. Let's take a look at the implementation method of 301 permanent orientation. For a domain name with or without www, a search

Cookie-related things, those rabbit things that year This article is intended for readers who have basic knowledge about cookies.   Set cookie (HTTP Response Header) Set-Cookie: {name }={ value}; path = {path}; domain = {domain}; expires = {expires},

It is said that there are more than three hundred factors that affect Google rankings. Therefore, the use of various cheating techniques on Google is not very effective. It takes a long time to cheat. Once discovered, the penalty is not worth the

# # #selinux # #1. What is SELinuxSELinux kernel-level enhanced firewall2. Managing SELinux LevelsVim/etc/sysconfig/selinuxSelinux=disable # #关闭状态Selinux=enforcing # #强制状态Selinux=permissive # #警告状态Getenforce # #查看状态Setenforce 0|1 # #更改linux运行级别3.

Transfer from https://www.cnblogs.com/yongshaoye/p/7423881.htmlFirst, understand the cross-domain?1 concept: As long as the protocol, domain names, ports are any different, are considered to be different domains.Definition: cross-domain refers to a

Active Directory operation of the mainframe detailed In the previous blog post, we have learned that each domain controller can modify Active Directory autonomously, and that the modified results are recognized by other domain controllers. From

Today (2013.03.01), Baidu Webmaster platform "rejected outside the chain" tool in Beta, the author is fortunate to become one of them, the following is a brief introduction to the tool. Baidu has the ability to reject the outside of the chain of

What is cross-domain JavaScript is not allowed to call objects on other pages across domains for security reasons. But it also brings a lot of trouble to injecting IFRAME or AJAX applications at the same time as security restrictions. Here's a

and the modified result will be recognized by other domain controllers. From this perspective, the status of domain controllers is equal, but we must not think that there is no difference between domain controllers! In fact, the first domain

There is a lot of knowledge about DNS on the Internet, I will not talk about the principle of DNS and do noun explanation here. In this article we will take an example to describe the configuration of DNS, the experimental environment is as follows: