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I want to block all, but one or two websites. This question is therefore relatively close to, but different from the following

I know that this can be done with leechblock (for FF) or something similar for other browsers. I think that is not a very clean solution, because it is browser-based. I know this was both possible and easy with Firestarter but that package is deprecated.

I am looking for something which is both easy (not manually editing hosts, but a script for instance) and systemwide. It can use the CLI.

I would love a relatively detailed answer rather than just links to other websites - screenshots would be most welcome.

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Why is this different from your other question? Stick a bounty on it if you want it answered rather than just asking it again and again. –  Oli Aug 8 '13 at 9:36
    
Oli, check the chat. I talked it over with fossfreedom. Also there is no reference question for this problem. –  don.joey Aug 8 '13 at 9:41
    
Should I conclude that this is not possible without modifying hosts? –  don.joey Aug 12 '13 at 15:12
    
No, the very first option I gave you in your other question (the port of Self Control) does this with iptables. –  Oli Aug 12 '13 at 15:22
    
I think it is a mistake to think of this as a duplicate. After all, the suggested dupe question is about restricting access to certain websites, whereas this question is from the other perspective: restricting everything except one or two. The solution proposed by Oli does not, and I repeat, not do that. It only blacklists, but does not whitelist. –  don.joey Aug 20 '13 at 19:28
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marked as duplicate by Eric Carvalho, Alvin Row, Eliah Kagan, Alvar, raaz Aug 15 '13 at 15:33

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

2 Answers

You can block websites system-wide by adding entry to hosts file. It works same as in windows.

Here's how to do it :

Open terminal and type :

sudo nano /etc/hosts

append the file with

127.0.0.1 facebook.com

Now whenever you'll visit facebook.com it will take you to localhost. FYI, it is not re-direct.

Worth reading: http://www.howtogeek.com/howto/27350/beginner-geek-how-to-edit-your-hosts-file/

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For reference' sake, I was asking for something "easy (not manually editing hosts, but a script for instance)." –  don.joey Aug 8 '13 at 10:09
    
This really does not answer my question as I ask for all websites to be blocked, except a few. –  don.joey Aug 9 '13 at 14:40
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I was able to achieve what your after by following 1st post in this thread: http://www.mahalo.com/answers/im-using-ubuntu-810-how-do-i-block-all-websites-except-a-few

felix.

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