It should not be the frequent thing, except in a few cases, but sometimes it happens: our internet provider blocks access to a web page. It exists, it is on the network, but it cannot be accessed from our ISP. This can happen by court order, so the decision can only be followed, or for other reasons. The usual thing, apart from censorship, is the blocking of download sites.
At this point, where we find that web content is blocked by our operator in our region, such as a country like Spain or any other, Is everything already lost? The answer is no.
If our ISP blocks us from accessing a web page, there are ways to avoid it
There are options to access that website and bypass the lock. Something that serves us both for cases of censorship because it is content that is uncomfortable for power – at least forty countries apply some form of censorship on the internet according to the United Nations – and for content intended for a specific audience or any other possible motivation. As long as, as we say, the web has not been completely removed from the network.
Two methods to avoid a crash
Using a virtual private network
For those who do not know, a virtual private network or VPN for its acronym in English, is a technology that allows you to set a secure extension of the local area network over a public or uncontrolled network such as the Internet, encrypting and channeling the traffic that occurs between one computer and another.
Thanks to a VPN service, there are some free although most are paid, we can access the content in question not available in our country or region thanks to that anonymous connection. Our ISP will not know that we are accessing a blocked website and, therefore, will not be able to block access to us.
In either case, the procedure for using a virtual private network it will always be the same and similar between platforms that offer this option. We will install the VPN, it may be offered to us as an application for our operating system or as an extension for our browser, and we will activate it. In the process of installation, start-up and configuration, we will be told how to proceed.
With the service installed on our computer, attempts to access a blocked site such as a download website will be anonymized by the company that provides our internet access. If the VPN works as it should, we will have free access to the content, as if the block did not exist.
Modified our DNS servers
A common form of blocking is the DNS filtering or spoofing. If a server of this type is configured to block access to a site, after checking our request for access to a website with its blacklists, it will give us a negative response. Either there will be an error, or they will lead us to a website that is not the one requested or there will be no reaction and it will appear that the website is down.
This being the type of blockade, we can proceed to skip the blockade modifying DNS servers. Of course, some operators do not allow using according to DNS, but in general it is a method that can work if, as we said, the method is produced from these servers.
What DNS can we use to replace the one that filters and blocks content? Well, those of Google, OpenDNS or Cloudflare, for example. And how are they configured? As follows, depending on the operating system you use:
Windows 10: We must access the system configuration, the section Network and Internet, the section Condition and the option Change adapter options. Once in the window that will open, we will see the available network connections and we will have to right click on the active one and select Properties. In the new window we will have to modify the element Internet Protocol version 4 (TCP / IPv4) selecting it and clicking on the button Properties. In this other window we will indicate that we want to use particular DNS server addresses, entering 126.96.36.199 and 188.8.131.52 in the fields for preferred and alternative DNS server.
macOS: In the Apple menu, we select System preferences and then, Net. There we choose the interface used to connect to the internet, Ethernet or Wi-Fi, we click on the button Advanced and click on the tab DNS. On the section DNS servers of the window that will have been opened we click on the button + (Add) and enter the Cloudflare DNS.
GNU / Linux: As a general rule, we will have to click on the network icon or look for the options related to it and choose the option Edit the connections. In the new window we will choose our current network and click on the button Edit, to address the eyelash IPv4 settings. In the countryside DNS servers We will introduce 184.108.40.206 and 220.127.116.11.
Android: Go to Settings, section of Wi-Fi connections and hold down on the network to which you are connected. In the drop-down that will appear select Modify network, in the window click on Advanced Options and now seeks IP settings. Display the menu from the right arrow, click on Static IP and in the configuration options that will now be displayed, scroll to the end and fill in the DNS fields 1 and 2.
ios: Accede to Settings, to the Wi-Fi section and on the connected network, click on the information icon. Now go to Configure DNS > Handbook > Add service. Enter the IPs of the Cloudflare DNS and click on Keep. Clever. If a section with an IP for the DNS has appeared directly, edit it with the desired address.