What is XML–RPC and explain.
Answers
Answer:
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Answer:
Explanation:
A remote procedure call is an interprocess communication technique that is used for client-server based applications. It is also known as a subroutine call or a function call.
A client has a request message that the RPC translates and sends to the server. This request may be a procedure or a function call to a remote server. When the server receives the request, it sends the required response back to the client. The client is blocked while the server is processing the call and only resumed execution after the server is finished.
The sequence of events in a remote procedure call are given as follows:
- The client stub is called by the client.
- The client stub makes a system call to send the message to the server and puts the parameters in the message.
- The message is sent from the client to the server by the client’s operating system.
- The message is passed to the server stub by the server operating system.
- The parameters are removed from the message by the server stub.
- Then, the server procedure is called by the server stub.
The xmlrpc.php allows remote connection to WordPress. Without it, various tools and publishing applications simply will not be able to access the website. Any updates or additions to the website would have to be made while logging directly into the system.
The Good
By disabling this feature, you eliminate the risk of external attacks gaining access. Although the contributors to this platform attest the programming of xmlrpc.php is as secure as the rest of the core files of WordPress, some may feel safer by disabling this ability.
It’s like having a house with only one door. Adding a second door may be more convenient, but it creates another entry point that needs to be locked.
The Bad
The obvious downside to eliminating this feature is that remote access to WordPress will no longer be possible. This removes some of the functionality and versatility of the system. Instead of posting blogs from a different application automatically through remote access, any content and other changes would have to be made through logging directly into WordPress.
If you don’t use XML-RPC at all, perhaps the best thing you can do is disable it. There is a free plugin named Disable XML-RPC which will do just that. The premium plugin Perfmatters (developed by a team member at Kinsta) also allows you to disable XML-RPC along with other optimizations for your WordPress site.
Or you can do this with code by adding the following to a plugin or theme (this is definitely plugin territory though):
add_filter( 'xmlrpc_enabled', '__return_false' );
The other issue you can prevent is brute force login attempts. These plugins will lock down the login once a couple of failed attempts have been made. All In One WP Security And Firewall is a more elaborate plugin that does this, but you can use some more specific tools like Login Lockdown. I like to use more specific plugins myself, to decrease my plugin footprint.
Look at this complete guide about how it work and you need to use or not ..
https://secure.wphackedhelp.com/blog/wordpress-disable-xmlrpc/