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other:putty_conf [2022/08/03 13:57] jypeter [Creating ssh keys with PuTTYgen] Added the 'Using the private key in Pageant' section |
other:putty_conf [2023/03/10 15:54] jypeter [Creating ssh keys with PuTTYgen] Started moving to ed25519 keys |
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====== Configuring and using PuTTY/Pageant ====== | ====== Configuring and using PuTTY/Pageant ====== | ||
- | PuTTY is a free and easy to use [[other:ssh|ssh client]] for **Windows**. You can use it to connect to your favorite remote Linux servers in text mode, and start remote graphical applications if you also have a running [[other:win10wsl#installing_an_x_server|X server]] | + | PuTTY is a free and easy to use [[other:ssh|ssh client]] for **Windows**. You can use it to connect to your favorite remote Linux servers in text mode, and start remote graphical applications if you also have a running [[other:x_conf|X server]] |
===== Installation ===== | ===== Installation ===== | ||
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* Specify your login name (on the LSCE servers) in **Auto-login username**. This way you won't have to type it when you connect to the Linux server!\\ {{ :other:putty_06.png?direct |}} | * Specify your login name (on the LSCE servers) in **Auto-login username**. This way you won't have to type it when you connect to the Linux server!\\ {{ :other:putty_06.png?direct |}} | ||
* In the ''Connection'' => ''SSH'' => ''Kex'' category: | * In the ''Connection'' => ''SSH'' => ''Kex'' category: | ||
- | * **<wrap hi>Unselect Attempt GSAPPI key exchange</wrap>**!\\ If you forget to do this, connecting to a server will seem to take forever (if it works at all)...\\ {{ :other:putty_gssapi.png?direct |}} | + | * **<wrap hi>Unselect Attempt GSSAPI key exchange</wrap>**!\\ If you forget to do this, connecting to a server will seem to take forever (if it works at all)...\\ {{ :other:putty_gssapi.png?direct |}} |
* In the ''Connection'' => ''SSH'' => ''Auth'' category: | * In the ''Connection'' => ''SSH'' => ''Auth'' category: | ||
* Select **Allow agent forwarding**. This is the same as [[/other:ssh#standard_usage|using ssh with the -A option]]\\ {{ :other:putty_07.png?direct |}} | * Select **Allow agent forwarding**. This is the same as [[/other:ssh#standard_usage|using ssh with the -A option]]\\ {{ :other:putty_07.png?direct |}} | ||
* In the ''Connection'' => ''SSH'' => ''X11'' category: | * In the ''Connection'' => ''SSH'' => ''X11'' category: | ||
- | * Select **Enable X11 forwarding**. This is the same as [[/other:ssh#standard_usage|using ssh with the -X option]]\\ {{ :other:putty_08.png?direct |}} | + | * Select **Enable X11 forwarding**. This is the same as [[/other:ssh#standard_usage|using ssh with the -X option]]\\ Note: remember that you will also need an [[other:x_conf|X server running]] in order to display graphics!\\ {{ :other:putty_08.png?direct |}} |
* When you have finished updating the settings, **do not forget to go back to ''Category'' => ''Session'' and Save the session**!\\ {{ :other:putty_09.png?direct |}} | * When you have finished updating the settings, **do not forget to go back to ''Category'' => ''Session'' and Save the session**!\\ {{ :other:putty_09.png?direct |}} | ||
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If you don't have a set of ssh keys, follow the steps below to **create private and public keys** | If you don't have a set of ssh keys, follow the steps below to **create private and public keys** | ||
- | * Make sure that the type of key (at the bottom of the ''PuTTYgen'' window) is ''RSA'' and that the number of bits is ''4096'' | + | * Make sure that the type of key (at the bottom of the ''PuTTYgen'' window) is ''EdDSA'' (short for //Edwards-curve DSA//), with the default ''255'' bits. This will generate ''ed25519'' keys |
+ | * You could use ''RSA'' and ''4096'' bits, but ''ed25519'' keys are recommended on the IPSL servers | ||
* Click on the ''Generate'' button and move your mouse to generate some random information | * Click on the ''Generate'' button and move your mouse to generate some random information | ||
* Type your ''Key passphrase'' and confirm it | * Type your ''Key passphrase'' and confirm it | ||
* Click on the ''Save private key'' button, and create a ''id_rsa.ppk'' file (or ''any_name_you_want.ppk'')\\ {{ :other:putty_23.png?direct&400 |}} | * Click on the ''Save private key'' button, and create a ''id_rsa.ppk'' file (or ''any_name_you_want.ppk'')\\ {{ :other:putty_23.png?direct&400 |}} | ||
- | * Click on the ''Save public key'' button, and create a ''id_rsa.pub'' file | + | * Click on the ''Save private key'' button, and create a ''id_ed25519**.ppk**'' file |
+ | * Click on the ''Save public key'' button, and create a ''id_ed25519.pub'' file | ||
* You will need to [[other:ssh#installing_ssh_keys|install the public key]] on all the remote Linux server that you want to connect to using the ssh agent, instead of typing your password | * You will need to [[other:ssh#installing_ssh_keys|install the public key]] on all the remote Linux server that you want to connect to using the ssh agent, instead of typing your password | ||
* Click on ''Conversions''=>''Export OpenSSH key'', and create a (standard) ''id_rsa'' file\\ You will not need this file with Putty, but it is just in case you need to use your private key later on a Linux computer | * Click on ''Conversions''=>''Export OpenSSH key'', and create a (standard) ''id_rsa'' file\\ You will not need this file with Putty, but it is just in case you need to use your private key later on a Linux computer |