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XMLRPC

Recently we have noticed a large amount of hits to the xmlrpc.php files within WordPress installations and have been causing server loads to rise. This is due to functionality in WordPress called pingbacks that is being used to perform DDOS attacks on other websites using WordPress installations. The xmlrpc.php file allows for API calls for other applications and also pingback requests. If you do not use this I would recommend removing this file, as it decreases the possibility of vulnerabilities on your WordPress installation, or disable the pingback functionality using the following plugin below.

Not only will this prevent high loads on your server, but it will also prevent denial of service traffic stemming from your website. Also removing this file as well greatly reduces the attack surface of a WordPress installation. I will provide links below explaining what pingbacks are, how to disable pingbacks with a plugin, and the vulnerability information for this type of attack. Although this vulnerability does not allow for compromise of your website, it allows others to use your site to perform a denial of service attack on others. Please feel free to contact us if you have any questions.

 

http://en.support.wordpress.com/comments/pingbacks/

https://wordpress.org/plugins/disable-xml-rpc-pingback/

http://www.cvedetails.com/cve/CVE-2014-5266/

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About three years ago we were looking for a new server provider, the problem that we were having was we are not “server guys” and we had over 400 clients to take care of. So anytime we tried to get support we had to submit a ticket, try to explain what was going on, and then pray that the response was in some form that we could understand.

After the on-boarding with Green Olive Tree, they told us that we had twice as much server than we needed and they were not set up right. Thank goodness we have found someone that really looked at what we want to do and gave us real actionable advice. It is safe to say that we have found our server company, and now we can focus on growing out business and not have to worry about the reliability of our support.

Thanks again Green Olive Tree, You Guys Rock!

John Owens

Green Olive Tree has been an invaluable resource to my company allowing me to focus more on my business instead of the management of servers. In the five years I have done business with GOT I have had zero downtime. Knowing that everything is being kept up-to-date and they are proactively patching system flaws gives me peace of mind that I didn’t have before finding Green Olive Tree. Jon has always made himself available when I’ve needed advice or help on upgrading servers or software and I can’t imagine ever going back to managing a server without GOT.

Chris Smith

Green Olive Tree has been very good to us. Jon has helped us scale from 200,000 unique’s visitors a day to over 3 million per day. From 1 server to now 14 on a well-structured load balanced failsafe system. Not only that he has managed to reduce our server resources 3 fold by installing the right kind of software so we’re getting more power out of each server for the same price. He always responds very quickly and stays up at all kinds of crazy hours to help us out, the man never sleeps! I guess that’s why he was a Navy Chief, he brings that discipline into his work and that’s what we love.

Anthony Lipari

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