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I need to block all outgoing traffic to a domain with all its subdomains.

I tried to do something like this:

sudo ufw deny out from any to *.domain.com

but of course it doesn't work because it needs an IP number.

How can I do this?

terdon
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user3021729
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1 Answers1

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You can do this more reliably with hosts.deny in just a few seconds:

  1. Open Terminal (if it’s not already open)
  2. Edit hosts.deny as root: 
    sudo vi /etc/hosts.deny
  3. At the bottom of the file, add: 
    ALL : .domain.com
  4. Save the file

The preceding dot in .domain.com is important. Do not forget it