On 09/19/2015 10:14 AM, Xen wrote:
Your internal addresses then usually have the form of 192.168.1.x. This is then what determines an "internal" machine.
Internal machines are not directly reachable from the outside, which also means any services on any open ports they have, cannot be accessed.
This bit of confusion is due to people being forced to use NAT, due to the lack of IPv4 addresses. Without NAT, you'd generally get a block of addresses that are all publicly reachable. You then configure the firewall to allow or block as required. This is still often the case with business customers on IPv4 and with anyone on IPv6. For example, I run IPv6 on my home network. I have a /56 prefix, which gives me 2^72 addresses for my own use. That's a trillion times the entire IPv4 address space. Every IPv6 capable device I have, including smart phone and tablet, get an address that can be publicly available, if I so configure my firewall. My firewall is configured to pass only ssh and imaps to my main computer and ssh to my firewall computer. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org