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Improve documentation some more.

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Manuel Amador (Rudd-O) 2024-02-06 03:54:08 +00:00
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README.md
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@ -38,15 +38,18 @@ connectivity for ProxyVMs and other user VMs alike.
No provision is made for running a server in a virtualized environment, No provision is made for running a server in a virtualized environment,
such that the server's ports are accessible by (a) other VMs (b) machines such that the server's ports are accessible by (a) other VMs (b) machines
beyond the perimeter of the NetVM. To the extent that such a thing is beyond the perimeter of the NetVM. By default, firewall rules in NetVMs
possible, it is only possible by painstakingly maintaining firewall rules prevent traffic from reaching any VM attached to them. Furthermore, even
for multiple VMs, which need to carefully override the existing firewall with custom, permissive firewall rules, the IP addresses of VMs attached
rules, and require careful thought not to open the system to unexpected to any NetVM are not visible "on the other side of the NetVM", so firewall
attack vectors. The Qubes OS user interface provides no help either. rules can only help with something like DNAT. Finally, such custom firewalls
require careful thought not to open the system to unexpected attack vectors.
The Qubes OS user interface provides no means to set this up either.
### The Qubes network server networking model ### The Qubes network server networking model
Qubes network server builds on that. Qubes network server builds on the Qubes security model and enhances it
to optionally permit traffic to user VMs.
![Qubes network server model](./doc/Qubes%20network%20server%20model.png) ![Qubes network server model](./doc/Qubes%20network%20server%20model.png)
@ -55,7 +58,8 @@ network servers in user VMs available to other machines, be them
peer VMs in the same Qubes OS system or machines connected to peer VMs in the same Qubes OS system or machines connected to
a physical link shared by a NetVM. Those network server VMs also a physical link shared by a NetVM. Those network server VMs also
obey the Qubes OS outbound firewall rules controls, letting you run obey the Qubes OS outbound firewall rules controls, letting you run
services with outbound connections restricted. services with outbound connections restricted using the standard Qubes OS
firewall system.
This is all, of course, opt-in, so the standard Qubes OS network security This is all, of course, opt-in, so the standard Qubes OS network security
model remains in effect until you decide to enable the feature on any model remains in effect until you decide to enable the feature on any