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xen-devel
Re: [Xen-devel] [PATCH] xen-2.0: privileged port connections
Kurt Garloff wrote:
Hi Anthony,
On Wed, Mar 23, 2005 at 09:41:24AM -0600, Anthony Liguori wrote:
So, here's my concerns:
1) ports < 1024 are reserved although 732 is currently unassigned
Note that NFS uses such ports without asking prior permission.
I chose 732 because it's unassigned indeed.
I know. That's one of the reasons using this port worries me. There
may be nfs related conflicts.
4) you still have to find a way to deal with the consoles
Before I start working on getting the consoles under control, I
wanted to see whether this approach is acceptable at all.
How would you extend this to consoles? Each console can't have it's own
privileged port :-)
5) you still have to deal with xfrd
It seems to listen on *:8002 ...
Is there no authentication either? Sigh.
Nope. I think there are a few options. We could use hosts.allow or
something similiar, we could restrict it to subnets, or we could try and
implement some sort of authentication mechanism.
Perhaps shutting it off by default and making it clear that it is
insecure is enough.
And we probably need to look into the event channel (8001) as well.
Yeah.
But for Xen-2, let's try to find a pragmatic way that enables desktop
users to install and test xen without raising too many security
concerns.
I full-heartedly agree. I'll gladly help out on this effort.
Regards,
Anthony Liguori
Regards,
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