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