On Sat, 5 Dec 2015 18:49:16 +0000, Mick wrote: > > It's basically a P2P VPN. You set up a network on the controller and > > then join it from various machines. Those machines register with the > > network controller, and receive an IP address from it, but the actual > > communication is direct between the computers. So your data is private > > and if both computers are on the same LAN, you still get full LAN > > speed between them. > > > > It use a TUN/TAP interface, for example on this laptop: > > > > zt0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 2800 > > inet 10.252.252.6 netmask 255.255.255.0 broadcast > > 10.252.252.255 ether 46:96:8c:9c:02:e1 txqueuelen 500 (Ethernet) > > So is this a userspace tunnel implementation, with the controller > playing the role of a remote VPN gateway? Like OpenVPN?
The controller is not a gateway, it is only used to connect the computers initially. It's more like a bittorrent tracker or DNS server, it facilitates the connection but doesn't see any of it. > What encryption does it use? From https://www.zerotier.com/tech_faq.shtml ZeroTier currently uses 256-bit Curve25519 elliptic curve Diffie-Hellman for shared key agreement and Ed25519 for elliptic curve signatures. 256-bit Salsa20 with Poly1305 authentication is used to encrypt traffic in transit. The construction and use of these algorithms is identical to the well-regarded NaCl cryptographic library. > > So I can connect to 10.252.252.6 from anycomputer on my zerotier > > network, but you cannot. You may even have the same IP address for > > one of the computers on your network. > > > > It's open source and if you want optimum security, or want to run a > > network of more than 10 computers without paying a fee, you can run > > your own controller. > > Wouldn't IPSec be more preferable? I'm trying to understand the > benefit/need for yet another tunneling solution. Ease of use and maintenance and flexibility. Creating a network takes seconds, adding a client takes a few more, and you can use it all the time, even if you are already connected to your physical network. -- Neil Bothwick Top Oxymorons Number 39: Almost exactly
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Description: OpenPGP digital signature
