-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On Wed, Feb 13, 2019 at 08:42:10AM -0800, simon.new...@gmail.com wrote: > In 3, if i clicked on "block connections" in the Qubes manager firewall > section, there was (if memory serves me) an option to block DNS and ICMP. > > That is not present in R4 (though docs say you can disable DNS and ICMP > manually) > > I'm just wondering what the logic behind the removal was? I would have > thought that a general user who clicks "block connections" on Qube would not > expect the qube to be able to actually send out and receive network packets > such as DNS or ICMP. This presents information leakage scenarios (default DNS > lookups of given qube) and also potential egress vectors if a qube is ever > compromised (DNS tunnelling, ICMP tunnelling).
Let me quote full text you can find on firewall tab there: NOTE: To block all network access, set Networking to (none) on the Basic settings tab. This tab provides a very simplified firewall configuration. All DNS requests and ICMP (pings) will be allowed. For more granular control, use the command line tool qvm-firewall. There is clear message what to do if you want to cut the qube from the network. - -- Best Regards, Marek Marczykowski-Górecki Invisible Things Lab A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAlxk5lQACgkQ24/THMrX 1yzyBQf+ID5V7ema8i77kmTCnsWfNeSPUQnlTjuQbF1oNZJFNeAwAaqp3FLO+Ljt Slj7e9KjbPYrxxuW40LIL05G78Yqs/MpZ1mA6/Yfy6J2tvoluucTFvatiHqiodO3 HLqyRSehMXqqzKTHNrLrfLWWyz6ykbP/MmIw1zsxjcXj8RCNuEMc5F4qC6npluWN cahMNcZLELo4PsrjzhqTrSr0BmlVLDQ5QLwoJGi8wSDGMEIDX3qvwq56wh6O0MgR J780J043BcrIiAfZorrG+WfpLebkU9uSjmOENxcZQQwz2JmEdod9dU1vUEPSdBY1 EKOq9FhCjMI6De6nNgiMf63Y47CxuQ== =9dvG -----END PGP SIGNATURE----- -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/20190214035356.GD9610%40mail-itl. For more options, visit https://groups.google.com/d/optout.