The recommended and described tools are:

1. putty (install package or portable). The latter does not need to be installed and does not need administrative rights therefore.
2. winscp install package or portable). The latter does not need to be installed and does not need administrative rights therefore.

For a howto for the installation, please look at the linked pages.

please refer to the linked pages for that

1. open the start meny
2. type puttygen
3. double click puttygen

1. click the button generate
2. follow the instructions (you have tp create some randomness with mouse movements)

1. click into the input box labeled Key passphrase and type passphrase
2. click into the input box labeled Confirm passphrase and type the passphrase again

1. click into the box labelled Public key for pasting into OpenSSH authorized_keys file
   
2. right click and select select all
3. press control-C
4. paste this into an email to jan.griesfeller@met.no or annac@met.no (or put this into a file that you attach)
5. you are ready to connect to aerocom-users.met.no as soon as your public key is activated by met.no

You have to export the private key so that it can be used with putty or WinSCP. Private key files have the file extension ppk with putty. Do this by clicking the button Export private key and store that at a place so that you will find it. You have to tell putty or WinSCP to use this key.

1. start putty
2. set the host name to connect to to aerocom-users.met.no
   
3. on the left hand side there is a box called Category
4. open the Connection→SSH part of it
5. click Auth
   
6. on the right hand side of the window you have to select the private key file to for the connection. Click the Browse button to do so selecting the just saved private key.
   
7. press the button Open
8. your user name is your email address e.g. mail@foo.bar
9. putty will ask you for the passphrase of the key
10. You should be connected to aerocom-users.met.no and see the terminal window.

In order to connect with WinSCP to aerocom-users.met.no, WinSCP has to use public key authentication. This means that it has to use the same private key as putty to connect to aerocom-users.met.no. Here's a basic howto.

1. Start Winscp. You should see a similar Desktop as the following picture:
   
2. fill out the field Host name with aerocom-users.met.no
3. fill out the field User name with your user name (usually your email address)
   
4. press the button Advanced to get to the window where you can tell WinSCP to use your private key for connection. the following window appears:
   
5. at the box at the left hand side click on SSH→Authentication
6. click on the three dots in the right hand side part of the window to select the private key file
   
7. press the button labelled OK. You are at the Login window again.
8. press the button labelled Login
9. Say yes if you are asked to accept the host key
10. type in your key's passphrase at the appearing Window

If everything went well, you will see your home directory on aerocom-users.met.no on the right hand side of the WinSCP window.