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I know hot to block single tumblr blog with

127.0.1.1 something.tumblr.com

but I want to block entire tumblr. I tried 127.0.1.1 tumblr.com but it's not working.

Is there a way to do this?

3 Answers 3

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From Ubuntu 14.04 LTS (Trusty Tahr) and above, which already have NetworkManager and use dnsmasq by default you don't need to install it.

Just create a file /etc/NetworkManager/dnsmasq.d/local:

address=/tumblr.com/127.0.0.1

and reboot or restart NetworkManager

$ sudo service network-manager restart

This will block tumblr.com and all of its subdomains by redirecting it to localhost (127.0.0.1).

Note this won't do anything unless you also set up your connection to use localhost/dnsmasq for name resolution.


On older than Trusty versions install dnsmasq:

$ sudo apt-get install dnsmasq

Then in /etc/dnsmasq.conf (which you may have to create) add the line:

address=/tumblr.com/127.0.0.1
5
  • Smart and simple way. Jun 13, 2012 at 4:29
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    Note this won't do anything unless you also set up your connection to use localhost/dnsmasq for name resolution.
    – ish
    Jun 13, 2012 at 5:45
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    and how do you setup connection to use dnsmasq? do you have any link? Jun 14, 2012 at 22:22
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    @user1079002 Connection setup can be found in this link help.ubuntu.com/community/Dnsmasq
    – RAM
    Aug 3, 2013 at 6:42
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    @RAM can you elaborate a little bit? That link says to install dnsmasq and then edit a certain file. What sort of edits should I do in that file? It's almost 700 lines long and it's not obvious to me if any particular line means "Turn dnsmasq on"
    – Tyler
    Jan 16 at 19:28
5

The /etc/hosts file does NOT support wildcard subdomains. i.e. you can't say 127.0.0.1 *.tumblr.com and have it block all URLs of the form something.tumblr.com.

If you want to block these at the browser level, you can either use a plugin or better, a filtering proxy like Privoxy.

If you want to block these at the network level, so that no one on that computer can access the sites, you need a simple firewall rule to block something.tumblr.com's IP range, which at first glance appears to be 50.97.143.0/24, i.e. 50.97.143.0-50.97.143.255.

0
-3

Looking at and taking the IP address you entered as literal, you are typing it wrong. Instead of 127.0.1.1 it should be 127.0.0.1

1
  • 3
    All addresses inside 127.x.x.x are loopback addresses. May 13, 2018 at 7:51

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