I am new to VPNs but it seems to be what I need for the following scenario: - Host A is a main system with public IP - Host B is an extra system with a public IP - Host C is a laptop often behind masquerading firewalls - Host D,E,F... could be behind any sort of firewalls; no port forwarding - C should be able to connect to all systems, even if one of A or B go down. - Minimal usage, like ssh and an occasional VNC. - Possible occasional backups to A. - Minimal configuration, especially on D,E,F. - All systems run Debian (A,B,C) or Ubuntu (D,E,F). - Room for more systems like B. - Room for lots more systems like D. I like the idea of a mesh topology VPN for providing alternate routes using tunnels through either A or B, though the VPN will look more like a star topology most of the time. The VPN should automatically detect a switch to a private address and provide a tunnel as necessary. I have looked some of the options and maybe tinc will do this, according to http://openvpn.net/archive/openvpn-users/2004-10/msg00486.html "automatically create a full mesh where possible" But tinc's configuration looks over-complicated to me... Ideas/thoughts welcome; thanks.
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