What is cjdns

Failed to load latest commit information. Nov 29, Manual merge 79a60b9. Sep 18, Nov 17, Need to return a value from pseudo-main function.

Oct 5, Couple more missing prototypes. Let Debian package build without setting extra variables. Sep 27, Add nftables examples. Jan 22, Flow the builder. Oct 2, Separation of concerns between builder and cjdns-specific build stuff.

Apparently due to a github bug, depending on rev hashes is not working. Aug 6, Fix a few warnings in gcc from string length violations. Dec 16, Nov 15, Move jshint config to top level and add flow config. Switch to a Rust libsodium build. Nov 24, Add android toolchains for rust. Nov 18, Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself. The FSF is a charity with a worldwide mission to advance software freedom — learn about our history and work.

Privacy Policy. JavaScript license information. Free Software Foundation! It's the first thing I've seen that really made me think about how we could design a better internet than the one we have today.

Off topic: Hey Kyle, how are the Supporter Plans working out for neocities? It'd be great to see a blog post about how the sites doing! I'll get to it soonish. This allows the sending node to determine and add routes to its own routing table.

For each hop, the receiving node reads the packet's header to determine where to next send the packet. Before the packet is forwarded to the next hop, the node performs a bit shift on the packet's headers, making it ready for use by the next node. The Source routing used by cjdns has advantages for performance and extensibility. Nodes can use experimental routing algorithms with existing meshes, and new releases of cjdns can change the default routing algorithm without creating protocol incompatibilities.

The major security problem of source routing, IP address spoofing , is prevented by the end-to-end nature of cjdns encryption. The belief that security should be ubiquitous and unintrusive like air is part of the core philosophy behind cjdns. The routing engine runs in user space and is compiled by default with stack-smashing protection , position-independent code , non-executable stack , and remapping of the global offset table as read-only relro.

The code also relies on an ad-hoc sandboxing feature based on setting the resource limit for open files to zero, on many systems this serves block access to any new file descriptors , severely limiting the code's ability to interact with the system around it.

On the other hand, some expressed concerns regarding security and performance of cjdns' routing. This means a denial-of-service attack could be launched against the network which could as a consequence lead to service interruption and censorship. The cjdns protocol attempts to address these concerns [9] with an approach similar to Virtual Ring Routing. Development discussion goes on in the cjdns IRC channel on the EFnet IRC network, that network having been chosen because of its decentralized control structure a mirror of the cjdns security model.

Cjdns employs a rolling release style model because the protocols and algorithms are new inventions and the way they behave in the real world is still not well understood. Cjdns is available on most Unix-like systems like Linux Debian, Ubuntu, etc.