Linux and MacOS support this protocol natively, for Windows several third-party programs to establish SSH connections are available. I.Connections to the cluster are usually done using the SSH Protocol. You're going to have to learn to use the command line to use SSH, whether you use the Terminal or Putty on a PC. Putty is no different all it does is show a dialog to open the connection. SSH is a command line protocol. 12' Apple PowerBook G4 (1.5GHz) Apr 17, 2008.
![]() ![]() Configuration of SSH connectionsYou can preconfigure your SSH connection to the cluster so that you do not need to enter the lengthy SSH command above every time. This is only recommended if an application does not work with -X. The difference is that with -Y the connection is treated as “trusted”, meaning fewer security checks are performed. Connections that allow opening windows, the SSH connection needs to be started with the -X option: $ ssh -X the -Y option does mostly the same. $ ssh X forwardingFor a connection with X forwarding, i.e. This is identical to the -X option, the equivalent for -Y would be an additional line ForwardX11Trusted yes. If you add this line, connections will always be started with X forwarding. The line ForwardX11 yes is optional. The line User is for the username with which you want to login every time. This can be any name, in this case horus. If a key pair already exists, you will get a warning message. This will generate a key pair, which by default has the names id_rsa (private key) and id_rsa.pub (public key). Run ssh-keygen on your local machine. You have to perform the following steps: This functionality is built into SSH. Ssh directory on the cluster and open the authorized_keys file with a text editor. Log into the cluster on a new console, change into the. Next, you open the id_rsa.pub file with a text editor again. You can leave the passphrase empty and simply press Enter twice. This would be more secure, but also means that you would have to enter the passphrase at every login, defeating the purpose. You will be asked whether you want to specify a passphrase. Ssh Putty Like Program Mac OS You CanSSH setup: Mac OSIn Mac OS you can open a Linux-like console by opening the Spotlight search and typing terminal or by installing iTerm. The latter helps to keep track of which key is which. An entry always consists of three parts, separated by spaces: an information block about the used encryption algorithm (typically ssh-rsa), the actual key and an optional name that you can modify. Log out from the cluster (with exit) and log back in to test whether your password-less login works.Tip: You can put multiple key entries into the authorized_keys file if you want to log in from multiple computers, they should be separated by empty lines. Your private key should always stay on your local computer and you should not share it with anyone. Pub) and not accidentally the private key. A pure command line tool is also available in the form of the Windows version of OpenSSH, which is explained (in German) elsewhere on the ZIMT website. The setup for PuTTY version 0.70 as well as MobaXTerm version 10.5 are detailed below. SSH setup: WindowsIn Windows, a number of programs to create SSH connections exist. In the file ~/.ssh/config, add the lines: host *After that, X forwarding will work as it does in Linux. However XQuartz requires another step to work. Free safe youtube to mp3 converter for macPutty setupTo save your settings you first need to create a “Saved Session” for the HoRUS cluster by entering a name for your session on the main configuration page and confirming it with “Save”.The Putty configuration menu has a lot of settings pages, which you can reach by clicking on elements of the tree on the left hand side. For that, a separate program like XMing needs to be installed and running when Putty is started. In addition, all the features described in the Linux section above (X support, password-less access etc.) can be preconfigured in Putty.Putty does not come with its own X server. When you then click “Open”, a connection is already possible.It is however a better idea to create a more extensive configuration for the cluster and save it so the information does not have to be re-entered every time. The other fields can be left at their defaults. Putty (and WinSCP)To connect to the cluster using Putty, the minimum configuration you have to do is enter the cluster address in the field “Host Name” on the configuration page that opens when you launch Putty. On the page “Connection > Data”, an “Auto-Login Username” can be specified. If the box “Enable X11 Forwarding” in the menu “Connection > SSH > X11” is checked, the connection is always started with X forwarding. The public key needs to be copied to the cluster as described in the Linux section to enable password-less login. A previously generated public/private key pair can be used for login by going to the “Connection > SSH > Auth” page and specifying the path to the private key on your own computer. Finally the public key needs to be copied to the cluster as described in the Linux section.Caution : Puttygen saves keys in individual text files, just like OpenSSH, but the format is slightly different. After the key pair is created, you need to save both keys. To generate a key pair you need to click “Generate” and then move the mouse around for several seconds to generate random numbers. It is located in the Putty installation directory (in Windows 10 you can simply enter “puttygen” in the Start menu and it will be listed). MobaXTerm already contains an X server, you do not need to install any additional software. The configuration page for that session is shown below:In the “Remote Host” field you need to enter the cluster address. Like all programs described above, a username, X forwarding and passwordless access can be specified. MobaXTermTo connect to the cluster using MobaXTerm, you first need to create a new SSH session. The advanced options in WinSCP allow most of the SSH settings, similar to Putty. Alternatively, the WinSCP program can be installed. WinSCPTo copy files to the cluster or from the cluster to your computer, the scp (Secure Copy) program on the cluster can be used.
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