>Hi!
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>I agree with that idea. When they have no Firewalls, the closing of IP addresses from outside is a good security broking preventive thing. They can use Firewall, however. Good Firewall allos to specify the IP address of the machine from which transferring is accepted. Thus, even with fixed IP address, computer is secured enough. But it also allows to connect to that computer from the special predefined IP address. this is exactly as we do now.
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What does this have to do with DNS? IP addresses can still be filtered...