This is an old revision of the document!
The tunnel application was designed and developed by Viveris Technologies. Viveris Technologies is a French company working in the IT field. The company provides to the ROHC project the skills of its engineering teams in the telecommunications, network and Linux fields.
Viveris Technologies proposes the knowledge and expertise gained on the ROHC library to companies and people that are interested in network header compression, but do not have the skills or the time to integrate the ROHC mechanisms in their application or infrastructure.
The IP/ROHC application is published under the GPL version 2 (or later) license.
In addition, frame packing is implemented: several ROHC packets are put together in one single IP header to reduce the tunnel overhead even more. IP encapsulation means less overhead, but it also means that NAT gateways won't handle it well in many cases.
The client and the server establish two communication channels between them: the control channel that uses TCP for reliability, and the data channel that uses raw IP for efficiency. The client establishes and closes a session on the control channel. The client transmits compressed data on the data channel. The control channel is authenticated and encrypted with TLS.
Both the client and the server uses TUN interface to fake network interfaces.
The application was tested under Linux, and more especially Debian, CentOS 5, Arch, and Gentoo. It should however work on every Linux distributions. If not, check for open bugs, report a bug and/or send a patch.
The application requires libyaml, gnutls, and ROHC. A RPM spec and a Debian package are available in the source tree. For more details, please refer to the instructions for installing the IP/ROHC tunnel.
make the RPM spec public and update the link