====== PuTTY ======
This page explains how to connect to our frontends using [[https://www.chiark.greenend.org.uk/~sgtatham/putty/|PuTTY]].

**If you want to use graphical applications on our cluster, PuTTY is not the right choice, please have a look at [[en:services:application_services:high_performance_computing:connect_with_ssh:mobaxterm|MobaXterm]].**

 ===== Creating an SSH Key with PuTTYgen =====
  - Open PuTTYgen
  - Click 'Generate' and follow instructions
  - Enter a passphrase for the key
  - Save private key

===== Upload Key =====
To upload a key, please log into your account on the [[https://www.gwdg.de|GWDG Website]], go to "My Account". Then scroll down to "Other Settings" and click "edit". You can now add a **public** key. \\
You have to use the contents of the top box in PuTTYgen, which is the correctly formatted public key.
{{ :en:services:application_services:high_performance_computing:connect_with_ssh:puttygen.png?400 |}}

===== Using PuTTY without Agent (insite GÖNET)=====
  - Open PuTTY
  - Put in Hostname
  - Go to "SSH"
  - Select "Auth"
  - Browse to your key
  - Click Open
  - If you secured your key with a passphrase (which we highly recommend), you will be asked to enter it
{{:en:services:application_services:high_performance_computing:putty-sshkey1.png?direct&400|}}{{:en:services:application_services:high_performance_computing:putty-sshkey2.png?direct&400|}}

===== Using PuTTY with SSH agent =====
If you are outside the [[en:services:network_services:goenet:start|GÖNET]], e.g. not on campus and are not able to connect to the [[en:services:network_services:vpn:start|VPN]], you need to use SSH-Agent forwarding to be able to move from login.gwdg.de to one of our frontends. 
{{http://wwwuser.gwdg.de/~parallel/docu/putty-agent.mp4?nolink&960x540}}