Hi Juergen

Am 06.03.2015 um 07:18 schrieb j...@tux-net.de:
> Why should the access to these update servers be enabled dynamically?

I could enable that access statically, but that would mean I have to
adapt the firewall policies to a peripheral functionality. As I want to
add this functionality to the mainstream, I don't want to force users to
adapt the firewall policy.

 What is the security policy behind it?

Access to the outside services from the firewall itself is limited to a
small set of functions. I _believe_ this is the standard.

Are the clients i.e mobile devices?
> Either you trust the targed or you do not. 

Right, this is not the problem, I must trust the target. We may use
signed containers to enhance this trust.

Do you want to control the traffic?    Or do you want to be sure that
the all clients get the same software version at a  given time?

Both is not as relevant, the problem is just that the firewall may not
have access at a given time, because the policy is set this way.

cheers
ET

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