[et-mgmt-tools] [PATCH] Add VNC-Port setting whenvirt-managercreates VM

Atsushi SAKAI sakaia at jp.fujitsu.com
Fri May 25 11:52:07 UTC 2007


I think Shigeki is mis-understanding Dan's mail.
I request Shigeki to repost his thinking.

Atsushi SAKAI

"S.Sakamoto" <fj0588di at aa.jp.fujitsu.com> wrote:

> > > The attached patch adds VNC-Port setting when virt-manager creates VM.
> > > The user can choose whether a VNC-Port is fixed or automatic setup. 
> > 
> > I don't think we want to expose ability to specify a fixed VNC port numbers 
> > in virt-manager. It will prove unreliable in practice, because even if you
> > fix a particular guest on port 5905, any other guest doing dynamic VNC port
> > assignment may choose this port before the hardcoded guest starts. It is
> > not going to be easy for virt-manager to do validation of this port number
> > either, since in the near future virt-manager may well be running remotely
> > from the host. Finally, any one using virt-manager for management of guests
> > never needs to know the port number, since virt-manager will always query
> > it from the XML, so this is a very small niche usecase & I don't think it
> > is worthwhile adding an extra step in the new VM wizard just for this
> > capability.
> > 
> Hi
> I think that fixed port is necessary.
> Because, it have a problem of security.
> Don't know a number of a port opening out...
> then, can't understand the port with attacked possibility.
> When auto-select, 
> Even if we perform an operative design before guest making,
> We don't understand we are using any number, and which number was used.
> It may be a very small niche usecase.
> But, I think security is not an at all small problem.
> So, I think that selection of a fixed port number is better.
> Thanks,
> Shigeki Sakamoto.
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