Monthly Archives: May 2016

Research: two thirds of PBNs on CloudFlare leak real IPs

A few weeks ago we added CloudFlare SSL support for blogs hosted on EBN. While in the process of integrating CloudFlare we did a thorough research on potential leaks and footprints. Here are our findings.

Is CloudFlare successfully masking my server’s real IP?

nocfIn essence, if you know exactly what you are doing and are very careful, then using CloudFlare to mask your PBN’s IPs is OK. But in reality, a lot of people have misconfigured PBNs and it is rather easy to get the real IPs they are using.

If you still want to use a single (or a small number of) server for your entire PBN and mask it with CloudFlare, you need to be careful with the following:

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Advanced Footprints Series: MX Records

Last week we talked about how nameservers can be a huge footprint for your PBN. Today we have another DNS themed blog post. This time, we’ll talk about MX records.

What are MX records?

MX records are an optional part of your DNS (domain name system). They are similar to A records, which are required to have your site up on a domain, but instead they provide email functionality for your domain. To put it simply, if you want to receive email to some.address@yourdomain.com, you need to set MX records for this domain. No MX Records, no emails.

The problem is that most SEO hosting providers do not provide emails for your PBN sites. That means all blogs on your PBN don’t have MX records set.

Could this be a footprint? Yes! Why? Well, out of 1 million top sites by Alexa, only 15% of domains are without MX Records, while 85% of all domains have MX records set. You do not want your *entire* PBN to be without MX records (not to mention inconvenience on not having emails for each of your sites).

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How to check if you have MX records set?

Very easy – just run DNS report on your domain and check the MX records field.

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Easy Blog Networks Has You Covered

As always, with EBN, we have this covered. All blogs hosted with us come with email support with randomized MX records. Read more about our Mail Inbox feature in our Help Center.

Why nameservers are more dangerous footprints than IPs

This is another post in our series about advanced footprints. While we wouldn’t really count nameserver footprints as advanced, there are still people doing really basic mistakes with them so we wanted to shed some light on the topic.

Nameserver Footprints

Nameservers are servers hosting your DNS zonefile, or in other words, your DNS records. Without them, your browser does not know to which server to send your request for domains you type in the address bar.

Everybody knows there is reverse IP search. But did you know there is also a reverse nameserver search? It does the same thing as reverse IP – shows all websites on that nameserver.

Why nameservers are more important than IPs

Although a lot of people see IPs as a big footprint with PBNs, there are multiple reasons why nameservers are a more problematic footprint for deindexation than IPs.

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