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