Download nmap 3.55 and look at the source code. Each file contains a notice with the following text. Is this dfsg-free? I'm not-subscribed, and I don't care about the results of this, so don't bother to cc me. I just want to stir the pot.
* Note that the GPL places important restrictions on "derived works", yet * * it does not provide a detailed definition of that term. To avoid * * misunderstandings, we consider an application to constitute a * * "derivative work" for the purpose of this license if it does any of the * * following: * * o Integrates source code from Nmap * * o Reads or includes Nmap copyrighted data files, such as * * nmap-os-fingerprints or nmap-service-probes. * * o Executes Nmap * * o Integrates/includes/aggregates Nmap into an executable installer * * o Links to a library or executes a program that does any of the above * * * * The term "Nmap" should be taken to also include any portions or derived * * works of Nmap. This list is not exclusive, but is just meant to * * clarify our interpretation of derived works with some common examples. * * These restrictions only apply when you actually redistribute Nmap. For * * example, nothing stops you from writing and selling a proprietary * * front-end to Nmap. Just distribute it by itself, and point people to * * http://www.insecure.org/nmap/ to download Nmap. * * * * We don't consider these to be added restrictions on top of the GPL, but * * just a clarification of how we interpret "derived works" as it applies * * to our GPL-licensed Nmap product. This is similar to the way Linus * * Torvalds has announced his interpretation of how "derived works" * * applies to Linux kernel modules. Our interpretation refers only to * * Nmap - we don't speak for any other GPL products. * * * * If you have any questions about the GPL licensing restrictions on using * * Nmap in non-GPL works, we would be happy to help. As mentioned above, * * we also offer alternative license to integrate Nmap into proprietary * * applications and appliances. These contracts have been sold to many * * security vendors, and generally include a perpetual license as well as * * providing for priority support and updates as well as helping to fund * * the continued development of Nmap technology. Please email * * [EMAIL PROTECTED] for further information. *
