LinuxCBT OpenSSHv2 Edition focuses on the implementation of Open Secure Shell Version 2 (OpenSSHv2) on various Linux | Unix platforms.

OpenSSHv2 is central to the confidentiality and integrity of data transmissions across secure (VPN | Private Line) and insecure (Internet | Intranet) networks (conduits). It is included with modern Linux | Unix operating systems and provides a plethora of useful data-transfer features, backed by Public Key Infrastructure (PKI) and asymmetric encryption technologies.

# Introduction - Topology - Features

* Discuss course outline
* Explore system configuration
* Identify key systems to be used
* Explore network topology
* Enumerate and discuss key OpenSSHv2 features

# Identify Key OpenSSHv2 Components

* Identify installed OpenSSHv2 related packages
* Peruse related startup and run-control script files
* Locate 'sshd' on the file system
* Discuss related client | server configuration files

# OpenSSHv2 Client - /ssh/

* Discuss features and benefits
* Obtain shell access on a remote system
* Configure /etc/hosts to provide local name resolution for OpenSSHv2
* Identify and discuss pseudo-terminals - pty
* Redirect X11/X.org traffic to localhost via SSH
* Bind 'ssh' to specific source IP address and test connectivity
* Execute commands on remote system without allocating a pseudo-terminal
* Debug 'ssh' connectivity
* Explore the system-wide client configuration file
* Explore user configuration file

# Secure Copy Program (SCP) - /scp/

* Discuss features and benefits
* Locate 'scp' on the file system
* Discuss usage
* Copy, non-interactively, previously generated data to remote systems
* Test 'scp' with global and user configuration directives
* Debug 'scp' connectivity
* Limit transfer rate to conserve bandwidth

# Secure File Transfer Program (SFTP) - /sftp/

* Discuss features and benefits
* Locate 'sftp' on the file system
* Discuss usage
* Connect to remote system using 'sftp' interactive shell
* Issue puts and gets and evaluate results
* Identify the sftp-server subsystem
* Peruse process list while connected to OpenSSHv2 server
* Illustrate batch file usage

# SSH Key Scan Utility - /ssh-keyscan/

* Discuss features and benefits
* Locate 'ssh-keyscan' on the file system
* Discuss usage
* Scan the network from STDIN for OpenSSHv2 public keys - RSA (SSHv1 & SSHv2) | DSA
* Scan the network based on a file with a list of hosts for OpenSSHv2 public keys
* Populate ~/.ssh/known_hosts file using 'ssh-keyscan' with BASH for loop
* Compare and contrast STDOUT with the output file

# SSH Key Generation Utility - /ssh-******/

* Discuss features and benefits
* Locate 'ssh-******' on the file system
* Discuss usage
* Generate RSA-2 usage keys
* Identify RSA-2 public and private key pair
* Generate DSA usage keys
* Identify DSA public and private key pair
* Expose usage keys' fingerprint using 'ssh-******'
* Generate RSA-2 | DSA usage keys for all hosts

# Public Key Infrastructure (PKI) - Password-less Logins

* Discuss features and benefits
* Identify key files for client and server implemenation of password-less (PKI-based) logins
* Copy manually, RSA-2 | DSA public keys to remote system's ~/.ssh/authorized_keys file
* Test password-less logins
* Use 'ssh-copy-id' to seamlessly populate remote system with RSA-2 | DSA usage keys
* Test password-less connectivity after using 'ssh-copy-id'
* Confirm password-less connectivity using SSH clients /ssh|scp|sftp/ in debug mode
* Connect to privileged account from non-privileged account using PKI
* Configure RSA-1 connectivity using PKI

# System-wide OpenSSHv2 Configuration Directives

* Identify key directory and files associated with client | server configuration
* Explore primary server configuration file
* Discuss applicability of directives
* Alter and test several SSHD directives
* Explore OpenSSHv2 configuration on RedHat Linux
* Explore OpenSSHv2 configuration on Solaris 10

# Port Forwarding - Pseudo-VPN Support - /Local|Remote|Gateway/

* Discuss features and benefits
* Implement local port forwarding using 'ssh'
* Configure remote port forwarding using 'ssh'
* Test circumvention of local firewall using remote port forwarding
* Implement gateway ports to share forwarded /local|remote/ with connected users
* Test connectivity

# Windows Integration - /PuTTY|WinSCP/

* Discuss features and applications
* Download and install PuTTY
* Explore PuTTY's features
* Configure PKI logins
* Download and install WinSCP
* Explore WinSCP's features
* Move data between Windows, Linux and Solaris

# Syslog | Syslog-NG Configuration

* Discuss features and benefits
* Identify default configuration
* Redirect OpenSSHv2 data using Syslog and Syslog-NG
* Examine results
* Enable debugging

# Host-based Authentication

* Discuss applicability and caveats
* Identify key configuration files and directives
* Implement host-based authentication
* Test results

# OpenSSHv2 Source Installation

* Discuss features and benefits
* Download current OpenSSHv2 source code
* Compile and install
* Restart services|daemons
* Test new version of OpenSSHv2

# Secure OpenSSHv2 Implementation

* Discuss features and benefits
* Identify key configuration file
* Enumerate and implement key directives
* Test configuration
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pass : Bytes_4U

In The AJAX Crash Course, published by SitePoint, instructor Kevin Yank explores the many technologies that come together in AJAX applications. These technologies include the Document Object Model (DOM), Extensible Markup Language (XML), JavaScript, and XMLHttpRequest (XHR). Along with providing an application tour, Kevin explains how to make intelligent decisions about which of these tools to use, and gives hands-on examples of how to apply them.

Table of contents

AJAX Crash Course by SitePoint
	An Introduction to AJAX	17:04	21.3 MB
	Making AJAX requests in the backgroung using XMLHttpRequest	20:52	26.8 MB
	Generating XML responses	21:01	25.8 MB
	Updating UI with new data from AJAX responses	20:14	26.2 MB

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While their basic principles and ideas are well understood and cogent from a conceptual perspective, the realization of interorganizational workflows and applications based on service-oriented architectures (SOAs) remains a complex task, and, especially when it comes to security, the implementation is still bound to low-level technical knowledge and hence inherently error-prone.

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This book is devoted to new methods of control for complex dynamical systems and deals with nonlinear control systems having several degrees of freedom, subjected to unknown disturbances, and containing uncertain parameters. Various constraints are imposed on control inputs and state variables or their combinations. The book contains an introduction to the theory of optimal control and the theory of stability of motion, and also a description of some known methods based on these theories.

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The remarkable advances in computing and networking have sparked an enormous interest in deploying automatic speech recognition on mobile devices and over communication networks. This trend is accelerating.

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From reviews of the previous editions

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Information and communication technologies are increasingly prolific worldwide, exposing the issues and challenges of the assimilation of existing living environments to the shift in technological communication infrastructure.

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Alfresco is an open source platform for Enterprise Content Management solutions. ECM includes things like Document Management, Web Content Management, Collaboration/Enterprise 2.0, Digital Asset Management, Records Management, and Imaging. At its core is a repository for rich content like documents, web assets, XML, and multimedia. The repository is surrounded by a services layer (supporting both SOAP and REST) that makes getting content into and out of the repository a breeze, which is why so many next generation Internet solutions are built on Alfresco.

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Written by two leading OFBiz consultants, this hands-on tutorial guides newcomers through the basics of Apache Open For Business, walking them through the creation and customization of real-world business applications. This book is for developers who want to build easily deployed and supported OFBiz applications. No previous knowledge of OFBiz is assumed, but readers should be comfortable in a Java development environment.


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Written by two leading OFBiz consultants, this hands-on tutorial guides newcomers through the basics of Apache Open For Business, walking them through the creation and customization of real-world business applications. This book is for developers who want to build easily deployed and supported OFBiz applications. No previous knowledge of OFBiz is assumed, but readers should be comfortable in a Java development environment.


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Written by two leading OFBiz consultants, this hands-on tutorial guides newcomers through the basics of Apache Open For Business, walking them through the creation and customization of real-world business applications. This book is for developers who want to build easily deployed and supported OFBiz applications. No previous knowledge of OFBiz is assumed, but readers should be comfortable in a Java development environment.


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