Merge branch 'ia/ssh/add_users_guide/OTP-7786'

* ia/ssh/add_users_guide/OTP-7786:
  ssh: Document and clean up SSH behaviours
  ssh: Add Users Guide and enhance man pages
  ssh: Added User's Guide framework and minor enhancements

1 files changed, 54 insertions, 0 deletions

diff --git a/lib/ssh/doc/src/introduction.xml b/lib/ssh/doc/src/introduction.xml
new file mode 100644
index 0000000000..aac8de0f76
--- /dev/null
+++ b/lib/ssh/doc/src/introduction.xml
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="iso-8859-1" ?>
+<!DOCTYPE chapter SYSTEM "chapter.dtd">
+
+<chapter>
+  <header>
+    <copyright>
+      <year>2012</year>
+      <holder>Ericsson AB, All Rights Reserved</holder>
+    </copyright>
+    <legalnotice>
+  The contents of this file are subject to the Erlang Public License,
+  Version 1.1, (the "License"); you may not use this file except in
+  compliance with the License. You should have received a copy of the
+  Erlang Public License along with this software. If not, it can be
+  retrieved online at http://www.erlang.org/.
+
+  Software distributed under the License is distributed on an "AS IS"
+  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+  the License for the specific language governing rights and limitations
+  under the License.
+
+  The Initial Developer of the Original Code is Ericsson AB.
+    </legalnotice>
+
+    <title>Introduction</title>
+    <prepared>OTP team</prepared>
+    <file>introduction.xml</file>
+  </header>
+
+  <section>
+    <title>Purpose</title>
+
+    <p>Secure Shell (SSH) is a protocol for secure remote login and
+    other secure network services over an insecure network. SSH
+    provides a single, full-duplex, byte-oriented connection between
+    client and server. The protocol also provides privacy, integrity,
+    server authentication and man-in-the-middle protection.</p>
+
+    <p>The Erlang SSH application is an implementation of the SSH
+    protocol in Erlang which offers API functions to write customized
+    SSH clients and servers as well as making the Erlang shell
+    available via SSH. Also included in the SSH application are an
+    SFTP (SSH File Transfer Protocol) client <seealso
+    marker="ssh_sftp">ssh_sftp</seealso> and server <seealso
+    marker="ssh_sftp">ssh_sftpd</seealso>.</p>
+  </section>
+
+  <section>
+    <title>Prerequisites</title>
+    <p>It is assumed that the reader is familiar with the concepts of <seealso marker="doc/design_principals:users_guide">OTP</seealso>
+    and has a basic understanding of <url href="http://en.wikipedia.org/wiki/Public-key_cryptography">public keys</url>.</p>
+  </section>
+
+</chapter>