SSH (Secure SHell) is a network protocol which provides a replacement for insecure remote login and command execution facilities, such as telnet, rlogin and rsh. SSH encrypts traffic in both directions, preventing traffic sniffing and password theft. SSH also offers several additional useful features:
• Compression: traffic may be optionally compressed at the stream level.
• Public key authentication: optionally replacing password authentication.
• Authentication of the server: making ”man-in-the-middle” attack more difficult
• Port forwarding: arbitrary TCP sessions can be forwarded over an SSH connection.
• X11 forwarding: SSH can forward your X11 sessions too.
• File transfer: the SSH protocol family includes two file transfer protocols.
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Exactly how jEdit is started depends on the operating system. For example, on Unix you can run “jedit” at the command line, or select jEdit from a menu; on Windows, you can double-click on the jEdit icon or select it from the Start menu.

If jEdit is started while another copy is already running, control is transferred to the running copy, and a second instance is not loaded. This saves time and memory if jEdit is started multiple times. Communication between instances of jEdit is implemented using TCP/IP sockets; the initial instance is known as the server, and subsequent invocations are clients.
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If you’re one of the four, five, maybe even six people
out there on the Internet who want to set up an A/UX web server, then this guide is for you. To make things simpler, this document follows a few standard conventions. Text in Courier is reserved for terminal sessions. This provides a sample walkthrough of commands to type and their usual responses. For example: A larger courier font is used to denote relevant commands mid-sentence, such as newconfig, in order to separate the command from the rest of the text. File and path names, such as /etc/inittab, are in bold. Individual references to filenames without paths like inittab aren’t.
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This project serves as an introduction to client-server programming. You will be expected to implement an abstract protocol called Simple Registration Protocol using simple TCP socket programming. To illustrate the use of the protocol, you will also implement a concrete application: a simple appointment management system. This application will introduce you to the use of LAMP (Linux, Apache, MySQL and PHP), a free, powerful and commonly-used combination for Web-based applications.
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What is SSH SSH (Secure SHell) is a network protocol which provides a replacement for insecure remote login and command execution facilities, such as telnet, rlogin and rsh. SSH encrypts traffic in both directions, preventing traffic sniffing and password theft. SSH also offers several additional useful features: Compression: traffic may be optionally compressed at the stream level. Public key authentication: optionally replacing password authentication. Authentication of the server: making man-in-the-middle attack more difficult Port forwarding: arbitrary TCP sessions can be forwarded over an SSH connection.
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