Understanding of DNS, DHCP, and OpenVPN Assigned IPs
Posted: Tue Jul 21, 2015 4:24 am
I am about to try to set up a dedicated OpenVPN server on Amazon VPC. Notice I said 'try' I almost never get things right first time. But It usually is better when I understand how things work AND how to make adjustments.
I have a VPC with a net and range of 10.0.0.0/16. So it will never conflict with the default, OpenVPN administed connection IPs from 10.8.0.0/8. (From what I can tell from RTFM) I'm a little new to networking, so I need to know about something. Before I do any routing table changes in the VPC, will traffic from a client get to any servers in the VPC or visa versa? This is what I really don't understand. Since the whole VPC only has a range from 10.0.0.0 - 10.0.255.255, but the OpenVPN IPs will be from 10.8.0.0 - 10.8.0.255, and that subnet is not part of the VPC range, how are the packets allowed, just routing table entries?
Also, in client mode, connecting from a Peetz Coffee shop, will any other people there on that subnet be able to see the servers on my VPC?
How about in Bridging mode?
Finally, for those with experience in Amazon VPC admin< I did see SOME mention of routing table entries to allow some kind of connection. Is it possible to put that routing table entry at some kind of global level within the VPC?
Thank you for your kind answers.
I have a VPC with a net and range of 10.0.0.0/16. So it will never conflict with the default, OpenVPN administed connection IPs from 10.8.0.0/8. (From what I can tell from RTFM) I'm a little new to networking, so I need to know about something. Before I do any routing table changes in the VPC, will traffic from a client get to any servers in the VPC or visa versa? This is what I really don't understand. Since the whole VPC only has a range from 10.0.0.0 - 10.0.255.255, but the OpenVPN IPs will be from 10.8.0.0 - 10.8.0.255, and that subnet is not part of the VPC range, how are the packets allowed, just routing table entries?
Also, in client mode, connecting from a Peetz Coffee shop, will any other people there on that subnet be able to see the servers on my VPC?
How about in Bridging mode?
Finally, for those with experience in Amazon VPC admin< I did see SOME mention of routing table entries to allow some kind of connection. Is it possible to put that routing table entry at some kind of global level within the VPC?
Thank you for your kind answers.