License: GPLv3
Cjdns is an encrypted IPv6 network using public-key cryptography for address allocation and a distributed hash table for routing.
Source code for cjdns is available from the official repository here.
The installer itself is written in Nullsoft Scriptable Install System script. It also includes a Windows service, CJDNS Watchdog Service, which takes care of starting up cjdns on boot and restarting it if it dies.
You must have Nullsoft Scriptable Install System installed on your Windows box in order to build the installer.
You also need to install the NSIS Simple Service Plugin and the ShellLink plugin. Make sure to put the proper DLLs into both the x86-ansi and x86-unicode folders of your NSIS installation directory.
To rebuild CjdnsService, you should use Visual Studio 2022 and .NET 6.
The installer should run just fine on 64-bit Windows.
The repository includes built cjdns binaries, prepared using this procedure as a guide.
You can use Ubuntu 22 on Windows 11 using WSL, and run the following commands:
sudo apt install software-properties-common -y
sudo add-apt-repository ppa:deadsnakes/ppa -y
sudo apt update
sudo apt-get install mingw-w64 build-essential nodejs git python3.7
ls /usr/bin/python* -l
sudo ln -vfns /usr/bin/python3.7 /usr/bin/python3
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
rustup target add x86_64-pc-windows-gnuls
git clone https://github.com/cjdelisle/cjdns.git
cd cjdns
# SYSTEM=win32 CROSS_COMPILE=i686-w64-mingw32- ./cross-do
./windows_do
The built cjdns exe files will be in the /target/x86_64-pc-windows-gnuls/release/ folder, copy them into the repo's installation directory.
Try to run cjdroute.exe. If you get the "libssp-0.dll was not found" error, download it from the LLVM based mingw-w64 toolchain repo and copy next to the exe files.
To re-build the CJDNS Watchdog Service, open up the CjdnsService.sln solution file in Visual Studio, right click on the project, Publish... and click Publish. Then replace the cjdnsservice.exe in the installation directory with your new copy.
To build the installer, right-click on installer.nsi and hit "Compile NSIS Script".
The installer will, by default, install a TAP driver, cjdns, and a Windows service that starts cjdns on boot. It will generate a configuration file at C:\Program Files (x86)\cjdns\cjdroute.conf, or wherever you installed it to, and then start cjdns.
To configure cjdns, edit that configuration file, and then issue net stop cjdns and net start cjdns as administrator (or just reboot).
Open a command prompt or a PowerShell window and try to ping a valid IPv6 address as described in detail in the User Guide.
If you experience any problems, you can look at the Windows Event Viewer. If there are many entries with CJDNS Watchdog Service in the Event Viewer (Local)/Windows Logs/Application branch, something must be wrong.
If you want to dig deeper, you can run cjdns from CLI.
- Open a command prompt with admin rights from the Windows Start Menu
- Stop the CJDNS Windows Service
net stop cjdns
- Go to the working directory
cd "c:\Program Files (x86)\cjdns\"
- Run CJDNS
cjdroute.exe < cjdroute.conf
5, Open another command prompt to ping various IPv6 CJDNS addresses
ping fcec:ae97:8902:d810:6c92:ec67:efb2:3ec5
6, Look for any error messages and details and change your configuration accordingly