On Mon, 14 May 2018, john wrote:

On 05/14/18 14:58, Ángel wrote:
 This paper is most interesting for the discovery of multiple ways email
 client leak information on visualization.
 (not clearly stated in the paper: some of them are already fixed, while
 in other cases the developers are still working on providing them)

 Luckily, with Qubes it is easy to set a firewall rule so that your email
 AppVM can only contact with your email server.
 NB that some of these leaks are dns-based, so ideally you would not
 allow it to perform any dns query, either.

 Best regards

can you give an example to the steps to make such a fw rule, if it's that simple please ?


Through Qubes VM Manager, I've added the following firewall rule:

- Deny network access except ...
- IP address of my email server

This works fine.


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