Gerrards Cross Computer Club

ICY NAS-Box 4220
Install telnet and PuTTY on Windows

Return to support page home

Page updated 16 July 2008

Page Contents

What is this page for?

If you are the proud owner of a New ICY NAS-Box 4220 (referred to as NAS from now on on this page) you may have discovered that telnet does not work. You will find this out if you try to venure beyond the Web Interface provided by the box. telnet is used to access network devices as well as providing simple command line interface to UNIX or LINUX. This is similar to the cmd Window on Windows XP or (for those of us old enough DOS.

This page shows you how to enable Telnet Access to your NAS-4220.

The instructions are aimed at a novice user. Experts can just get on with it - you were a novice once!

Enable Telnet Access to NAS-4220

As initially installed "out of the box" the NAS-4220 does not support telnet however so first we need to enable it. This is quite simple.

1 Connect to your NAS 4220 box using your favourite browser. Enter the URL http://<nas> – replace <nas> by your NAS box name or IP address. The screen shown should appear.

Enter your standard administrator <user name> and <password> (default is admin/admin).

Click Login Button.

The next screen to appear will be the standard– replace <nas> by your NAS box name or IP address. NAS screen.
Login screen
2 Enter the following URL in your web browser – replace <nas> by your NAS box name or IP address. Note that the part following <nas>/ can be copied [CTRL+C] from the text below and pasted into– replace <nas> by your NAS box name or IP address. the URL [CTRL-V] in your browser to overwrite the f– replace <nas> by your NAS box name or IP address.inal part of the URL displayed http://<nas>/home.cgi

http://<nas>/cgi/telnet/telnet.cgi followed by [Enter]

The telnet enable screen will now appear.
Standard NAS screen
3 You now need to click the Enabled Checkbox (this has already been done on the screenshot).

Click Save button

Close down your browser. The NAS now supports telnet connections.
Telnet enable page

Enable Telnet on Windows

Windows contains a telnet program but the user interface (in particular copy/paste) is awful. It is far better to use a freeware program - PuTTY - which is a very comprehensive telnet access program (and a lot more beside) and is universally (well almost) for this sort of task when using Windows. I have never seen an open source licence like it - free for home, industry government! 

If you are using LINUX then read no further - you already have a telnet client program.

Right - let us install PuTTY.

Install and Configure PuTTY

PuTTY is a free, small download from the internet. The screenshots and description is for XP using Internet Explorer 7. Vista may vary in detail. My system is in the UK using UK localisation. You will have to interpret these into your own language if your computer is configured for another language.

1 First we need to  download the program. Using your favourite browser enter the following URL

Clink on link - You can download PuTTY here

This takes you to the download page.
PuTTY home page
2 Scroll down to the binaries section. There are several choices here which are equally valid. Click on the option putty-0.60-installer.exe under the heading A Windows installer for everything except PuTTYtel

The File Download dialog box will appear.
PuTTY Download page
3 When the File Download dialog box appears choose Save to your local drive (at least that is my preference). Choose a suitable location to store the download. The download is 1.67 Megabytes. Open/Save dialog
4 You can then choose Run to start the installation. A Security Warning dialog pops up to confirm that you want to run the software. Click on Run to continue. Download complete
5 A standard Windows Setup screen appears - click Next to continue PuTTY Setup Wizard
A standard dialog box showing the installation location appears. Only change to installation path if you have good reason to do so. The default is usually OK

Click Next</a>
Install folder
Confirm that the Start Menu folder is acceptable (orchange it is you must) by clicking Next Start menu items
Choose the options you want. I find the d</a>efaults aare OK.

Click Next
Final Options
Confirm installation by clicking Install<</a>/a> Install confirmation
Installation procedes in the normal way and we end with this screen. Click Finish

Shut down the Readme when you have read it. PuTTY is now installed.

Uninstall uses standard Windows uninstall should you ever feel the need.

I would make one standard tweak to the defaults PuTTY uses. this is my personal preference and is not essential. There is a further tweak to make it slightly easier if the NAS is the only device you want to use PuTTY with.
Start PuTTY through the Start Menu.

The screen shown is the main control/configuration Window. You use this to select the device to talk to and the type of connection. The pane on the left allows many parameters to be configured. We will be changing one of these.

Click on Window on the Category pane.

The next screen appears.

Putty initial screen
The Window now shows the default initial state. The line I recommend sho</a>uld be changed is Lines of scrollback. With PuTTY you can look back through the history of what you have been doing. 200 lines is sometimes not enough. unless you are short of memory I always set it larger. The actual value used is personal preferance. I recommend a value between 1000 and 10000. I personally always use 10000 which is far larger than I have ever needed. Let us choose 10000 - type it into the Textbox.

Return to the Session (i.e. the initial) screen by clicking on Session.
PuTTY configure Window screen
We are on the final stage now. Change the Connection Type to Telnet by clicking on the Telnet Radio Button.

Go to the Host Name [or IP address] textbox and enter the IP address you have configured onto the NAS or its Name - in this example <NAS> is used, you should use your own.

Finally click on Save. This will save to configuration settings so you don't need to go thorough this again when you start PuTTY again..
Save Default

PuTTY Telnet Session

Start PuTTY trough Start Programs unless you already have the Window open following configuration.

You open a PuTTY session by Clicking Open and a new Window will open showing a login prompt.

In the sample shown below the device name has been replaced by <nas>. In your case it will the device name you have entered or the device default.

The login command has been issued using root as the login name and admin as the password (i.e. this is the same password to that used to login as admin on the web configuration screen). Note that the password does not echo the characters typed for obvious reasons.

<nas> login: root


BusyBox v1.00-rc3 (2007.08.08-11:22+0000) Built-in shell (ash)

Enter 'help' for a list of built-in commands.


You now have a prompt to access the UNIX command set. Just follow the instructions or learn how to use the more basic commands, there are no help files on the NAS (man pages in UNIXspeak) but Google will usually find what you are looking for.