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Instructions for Downloading the PuTTY SSH Client

Each semester the Computer Science Department sets up a student web server used in a variety of courses to host student web design projects and provide a practice machine for Linux students (those students should read Linux Software - Options for Access and Use). Accounts are typically setup on this server within the first week of classes, near the end of the drop/add period. To access the server, students must use a secure (SSH protocol) remote login client. You can download and install a popular freeware SSH client named PuTTY from


To download the latest version of PuTTY for any modern version of Windows, [click here].

You should expect to see a "File Download" dialog box appear on your screen. The safer option here is to click on the Save button and identify a folder to save the program file into. Unless you have previously downloaded software and saved it to a specific location, Windows typically suggests a "Save in" location of the Windows Desktop. If you have previously downloaded software and saved it to a specific location, Windows will suggest a "Save in" location of the last folder used to save downloaded files. If you prefer to save the PuTTY executable file in some folder other than the one suggested, then use the droplist via the arrow on the right edge of the Save in text box to browse through the folders on your computer and select a place to store the program file. Then click on the Save button at the bottom right side of the dialog box. It would be wise to use whatever anti-virus software is on your computer to scan the freshly downloaded file for viruses.

The downloaded file's name will be putty.exe. It is a stand-alone program file which can be stored in and run from any folder or your Windows Desktop screen. It will require that you are already connected to the Internet. It simply uses whatever connection is available. It does not require installation. It can be removed by simply erasing the program file.

You might also want to download the Windows Help file for the PuTTY program. To download the latest version of the PuTTY Help file for any modern version of Windows, [click here]. Simply save this file in the same folder as the program and open it when you require documentation. You can also [access this documentation on-line from the PuTTY web site].

Even if you prefer to not install PuTTY on your computer, it is still possible to use it. Most popular anti-virus programs now scan downloaded files "on-the-fly". If yours is like this, then you can temporarily download and run the program without saving it on your computer. This is useful if you are using a computer that is not yours. To run a temporary copy of the program, start the download process as described above, but when the "File Download" dialog box appears on your screen, simply select the [Open] button (instead of the Save button) and start the download process. PuTTY will download and run, displaying its configuration dialog box as shown in the second illustration on the Adobe® PDF file entitled Using PuTTY to Access the IRSC Student Web Server. After closing the program it will be abandoned by Windows and its storage space will be made available to future downloads.

After installing and/or running PuTTY on your PC, you will be able to use your username and password to logon to our Linux server (named It is a Linux host. You will have an ordinary user account on this server, but will not have administrative (root user) access. This will restrict some of the activities that you can perform with this option. You will be able to work from anywhere with Internet access (broadband speeds are preferable, but not essential), but the PC must have an SSH/Telnet client installed first.

For detailed instructions on using PuTTY to access the IRSC Student Web Server, retrieve the Adobe® PDF file entitled Using PuTTY to Access the IRSC Student Web Server.

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