doc/about.texi

   1 @cindex about
   2 @strong{NNCP} (Node to Node copy) is a collection of utilities
   3 simplifying secure store-and-forward files, mail and command exchanging.
   4
   5 See also this page @ref{Об утилитах, on russian}.
   6
   7 @cindex F2F
   8 @cindex friend-to-friend
   9 @cindex E2E
  10 @cindex end-to-end
  11 @cindex darknet
  12 @cindex DTN
  13 @cindex delay tolerant
  14 @cindex dead drop
  15 @cindex onion encryption
  16 This utilities are intended to help build up small size (dozens of
  17 nodes) ad-hoc @url{https://en.wikipedia.org/wiki/Friend-to-friend,
  18 friend-to-friend} (F2F) statically routed
  19 @url{https://en.wikipedia.org/wiki/Darknet, darknet}
  20 @url{https://en.wikipedia.org/wiki/Delay-tolerant_networking, delay-tolerant}
  21 networks for fire-and-forget secure reliable files, file requests,
  22 Internet mail and commands transmission. All packets are integrity
  23 checked, @url{https://en.wikipedia.org/wiki/End-to-end_encryption,
  24 end-to-end} encrypted, explicitly authenticated by known participants
  25 public keys. @url{https://en.wikipedia.org/wiki/Onion_routing, Onion
  26 encryption} is applied to relayed packets. Each node acts both as a
  27 client and server, can use push and poll behaviour model.
  28 Also there is @ref{Multicast, multicasting} areas support.
  29
  30 Out-of-box offline @url{https://en.wikipedia.org/wiki/Sneakernet,
  31 sneakernet/floppynet}, @url{https://en.wikipedia.org/wiki/Dead_drop,
  32 dead drops}, sequential and append-only
  33 @url{https://en.wikipedia.org/wiki/CD-ROM,
  34 CD-ROM}/@url{https://en.wikipedia.org/wiki/Tape_drive, tape} storages,
  35 @url{https://en.wikipedia.org/wiki/Air_gap_(networking), air-gapped}
  36 computers support. But online TCP daemon with full-duplex resumable data
  37 transmission exists.
  38
  39 Look for possible @ref{Use cases, use cases}!
  40
  41 @cindex GPL
  42 @cindex free software
  43 @cindex licence
  44 NNCP is @url{https://www.gnu.org/philosophy/pragmatic.html, copylefted}
  45 @url{https://www.gnu.org/philosophy/free-sw.html, free software}
  46 licenced under @url{https://www.gnu.org/licenses/gpl-3.0.html, GNU GPLv3}.
  47 It should work on all @url{https://en.wikipedia.org/wiki/POSIX,
  48 POSIX}-compatible systems. Easy @ref{Integration, integration} with existing
  49 @url{https://en.wikipedia.org/wiki/SMTP, SMTP} servers. Single
  50 @url{https://hjson.org/, Hjson} configuration file.
  51
  52 Why create yet another store-and-forward solution when UUCP, FTN and
  53 even SMTP exists? Look in @ref{Comparison, comparison} section!
  54 Simplicity, cryptographic security, sneakernet compatibility and easy
  55 integration with current SMTP servers are the reasons.