content/cloud/putty/index.md

+---
+title: "PuTTY"
+date: 2021-05-18T11:22:35+02:00
+draft: false
+---
+
+
+
+[PuTTY](https://www.chiark.greenend.org.uk/~sgtatham/putty/faq.html#faq-what) is a client program for the SSH on Windows OS.
+
+## Windows PuTTY Installer
+We recommend downloading [Windows Installer](https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html) with PuTTY utilities as:
+* Pageant (SSH authentication agent) - store the private key in memory without the need to retype a passphrase on every login
+* PuTTYgen (PuTTY key generator) - convert OpenSSH format of id_rsa to PuTTY ppk private key and so on
+
+## PuTTY - Connect to the Instance
+
+* Run PuTTY and enter Host name in format "login@Floating IP address" where [login](/cloud/quick-start#create-virtual-machine-instance) is for example debian for Debian OS and Floating IP is [IP address](/cloud/quick-start/#associate-floating-ip) to access instance from internet.
+* In Category -> Connection -> SSH -> Auth:
+  *  Select **Attempt authentication using Pageant**
+  *  Select **Allow agent forwarding**
+  *  Browse and select your private key file (if needed [convert OpenSSH format id_rsa to Putty ppk](#convert-openssh-format-to-putty-ppk-format))
+* Return to *Session page* and Save selected configuration with **Save** button
+* Now you can log in using **Open** button
+* Enter passphrase for selected private key file if [Pageant SSH authentication agent](#pageant-ssh-agent) is not used
+  *  We recommend using Pageant SSH Agent to store the private key in memory without the need to retype a passphrase on every login
+
+![](images/putty-connect2instance.png)
+
+
+## Pageant SSH Agent
+
+* Run Pageant from Windows menu
+* Locate Pageant icon in the Notification Area and double click on it
+* Use **Add Key** button
+* Browse files and select your PuTTY Private Key File in format ppk
+* Use **Open** button
+* Enter the passphrase and confirm **OK** button
+* Your private key is now located in the memory without the need to retype a passphrase on every login
+
+![](images/pageant-add-key.png)
+
+
+## PuTTY key Generator
+
+PuTTYgen is the PuTTY key generator. You can load in an existing private key and change your passphrase or generate a new public/private key pair or convert to/from OpenSSH/PuTTY ppk formats.
+
+## Convert OpenSSH format to PuTTY ppk format
+
+* Run PuTTYgen, in the menu Conversion -> Import key browse and load your OpenSSH format id_rsa private key using your passphrase
+* Save PuTTY ppk private key using button **Save private key**, browse destination for PuTTY format id_rsa.ppk, and save file
+
+![](images/puttygen-openssh2ppk.png)
+
+
+## Convert PuTTY ppk private key to OpenSSH format
+
+* Run PuTTYgen, in the menu File -> Load private key browse and open your private key in format PuTTY ppk using your passphrase
+* In the menu Conversion -> Export OpenSSH key browse destination for OpenSSH format id_rsa and save file
+
+![](images/puttygen-ppk2openssh.png)
+
+
+## Change Password for Existing Private Key Pair
+
+* Load your existing private key using button **Load**, confirm opening using your passphrase
+* Enter a new passphrase in the field *Key passphrase* and confirm again in the field *Confirm passphrase*
+* Save changes using button **Save private key**
+
+![](images/puttygen-passphrase.png)
+
+
+## Generate a New Key Pair
+
+* Start with **Generate button**
+* Generate some randomness by moving your mouse over the dialog
+* Wait while the key is generated
+* Enter a comment for your key using "your-email@address"
+* Enter a key passphrase, confirm the key passphrase
+* Save your new private key in the "id_rsa.ppk" format using the **Save private key** button
+* Save the public key with the **Save public key** button
+
+![](images/puttygen_new_key.png)