Overview
  [Supercomputing]
  [Project Development]
  [Project Design]

Login Procedure
  [ssh (Putty) ]
  [Tutorial]

Unix
  [Basic Commands]
  [Utilities]
  [Pico]
  [Cygwin]

C++
  [Background]
  [Tutorial]
  [Advanced Syntax]

Java
  [Background]
  [Tutorial - Unix]
  [Tutorial - PC]
  [Advanced Syntax]

Graphics
  [gnuplot]
  [Tutorial]

Extras
  [Cygwin-X11]
  [E-mail]
  [ftp]
  [HTML]
  [Resources]

Supercomputing Challenge
  [Home Page]
  [Technical Guide]

Remote login is the ability to connect a computer on one network to a computer on another network and have the local computer behave as if it is directly connected to the remote machine.

ssh allows the user to create a connection from a computer on one system to a computer on another system, whether that system be next door, or across the globe. Once the connection is established, ssh allows the user to interact with that remote system as if he or she were directly connected.

From a school computer (or home computer) you can perform a routine ssh session. This will typically consist of an interactive Linux (and/or Unix) session on the Challenge machines "mode" (which runs the Linux operating system).

You may also access any number of special services, including: search library catalogs in public libraries and university libraries globally, access the text of USA Today, find out what the weather is like in any city on the globe, locate friends' email addresses, etc.

An ssh connection doesn't deal directly with HTML, or embedded images, or mice, or the other slick features we associate with the World Wide Web. Also, note that ssh is point-to-point communication between two machines; if more than two sites need to communicate, ssh alone won't do the job.

You must have ssh software installed on your machine. Then you may use it to log into the machine "mode". Logging in is a multistep process. First, you specify the remote site to your ssh program (e.g. mode.lanl.k12.nm.us). Then, once a connection is made, you still have to enter a user ID and password as a local terminal would.

Since mode is behind a firewall, the IP address of the machine you are coming from must be entered in the routing tables. Visit https://mode.lanl.k12.nm.us/ipaddress_login.php to have the IP address of your machine added to the list. This is a manual process that takes a few days so drop Consult an email saying you have registered your machine.

Here is a tutorial on using ssh to remotely login to the challenge machine "mode" via a PC running windows.

Supercomputing Challenge — Questions? e-mail: