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Developer(s)n2n team
Initial releaseMarch 27, 2008 (2008-03-27)
Stable release
3.0[1] / 27 October 2021; 6 months ago (27 October 2021)
Written inC
Operating systemFreeBSD, Linux, OpenWrt, Mac OS X, Unix, Windows, Android
LicenseGNU General Public License

n2n is an open source Layer 2 over Layer 3 VPN app utilising peer-to-peer architecture for network membership and routing.

Unlike many other VPN programs, n2n can also connect computers which reside behind NAT routers. These connections are set up with help from a third computer that both computers can reach. This computer, called a supernode, can then route the information between NATed nodes.[2]

It is free software licensed under the terms of the GNU General Public License v3.[3]

Turbo VPN is a custom Windows server/client implementation of n2n.[citation needed]


  1. ^ https://github.com/ntop/n2n/releases/tag/3.0; publication date: 27 October 2021; retrieved: 17 April 2022.
  2. ^ "Archived copy". Archived from the original on 2011-09-24. Retrieved 2011-09-18.{{cite web}}: CS1 maint: archived copy as title (link) : "[the supernode] is basically a directory register and a packet router for those nodes that cannot talk directly"
  3. ^ https://github.com/ntop/n2n

External links[edit]