Author: Adam Ierymenko

As of version 1.4.2 we changed ZeroTier’s license from the GNU General Public License V3 (GPLv3) to a newer licensing scheme pioneered by MariaDB called the Business Source License (BSL). ZeroTier’s version can be found here and there is more…

ZeroTier 2.0 is relatively close, so we want to take this opportunity to announce some of the changes and improvements that are coming. Version 2.0 is a major milestone release, hence our first major version increment. It will also be…

This post is for cryptography geeks who are interested in what we’re doing to improve ZeroTier’s security and performance in version 2.0. Disclaimer: these are research notes, not a final design, and you shouldn’t copy this design into a production…

ZeroTier’s root servers don’t do very much. They relay initial traffic between peers, help peers establish peer-to-peer connectivity, and act as a cache of identities and associated public keys. If you’ve typed “zerotier-cli listpeers” you’ve seen them. They’re called “planets”…

Since releasing ZeroTier 1.4 and LF we have shifted most of our effort over to developing our upcoming 2.0 release. Not much has been announced about this release, though in the LF documentation we hinted at how it will be…

… version 10.13 or newer at least … Since we first released ZeroTier for MacOS we’ve used a kernel extension based on a stripped down and rebranded version of tuntaposx. In our version we increased the maximum MTU, removed tun…

TL;DR: this post introduces LF in detail and provides a little bit of back story on its development. You can head over to GitHub if you just want to jump in and give it a spin. Also see threads at…

We’re preparing to release 1.4.0 and would like people to give it a try. We’ve created Windows and Mac installer packages for a pre-release we’ve numbered 1.2.99 (which is really 1.4.0pre). The most important new feature in 1.4.0 is multipath…

Greetings ZeroTier users! This is ZeroTier Founder Adam Ierymenko and it’s about time for me to deliver a much-belated update on our current status and our future plans. First: no, we are not dead! Quite the opposite. We’ve had too…

This describes a nasty and definitely absolutely real bug in GNU libstdc++ that existed as of the time of this post. We’re not sure if it still does. About a week ago many users may have noticed instability on our…

The next major release of ZeroTier’s network virtualization engine (1.2.0) is a huge milestone. In addition to other improvements, our virtual networks will be getting a lot smarter. It will now be possible to set fine-grained rules and permissions and…

As of this week it is now possible to connect desktop and mobile apps to virtual networks with the ZeroTier SDK. With our SDK applications can now communicate peer to peer with other instances of themselves, other apps, and devices using…

ZeroTier is growing, and to facilitate that growth we’ve just made a significant upgrade to our root server infrastructure. While the ZeroTier network is peer to peer, it relies upon a set of designated core nodes whose role and responsibility…

This describes the effort that eventually led to libzt. TL;DR: If you’re going to put the network in user space, then put the network in user space. For the past six months we’ve been heads-down at ZeroTier, completely buried in…

For those who don’t know, NAT stands for Network Address Translation. If you’re on a typical network, your system probably has an IP address like 10.1.2.3or 192.168.0.66. These are private IPs. They are not your real Internet IP address. Between you and the network…