![]() ![]() This way, authorization credentials must reside only on the issuing PC, the third party. Using scp you can not only move files to and between virtual machines like I will do, but move them to any server on the world as well. Secondly, use the -3 option, as follows: scp -3 -3 option instructs scp to route traffic through the PC on which the command is issued, even though it is a 3rd party to the transfer. This way the CLI remains tidy and simple. SCP is a Secure Copy Protocol that transfers files and directories between two computers. This way it becomes possible to pass all necessary options to the command without ambiguities: for instance, if we had said on the CLI use port 2222 without the above configuration, it would have been unclear whether we were referring to remote1 or to remote2, and likewise for the file containing the cryptgraphic keys. ![]() The first necessary step is to use ~/.ssh/config to set up all options for the connection to both remote1 and remote2, as follows: Host The modern way to do it, instead, ("modern" because it was implemented only a few years ago, and perhaps not everybody has a -3-capable scp) requires two steps. For this to work, you would have to set up the authorization credentials for remote2 on remote1. In the past, the way in which scp worked, when called ( naively) to copy files between remote systems, was very inconvenient: if you wrote, for instance scp would first open an ssh session on remote1, and then it would run scp from there to remote2. To transfer a file with the scp command, use the following syntax: scp file1 user192.268.1.3:/home/user This example copies file1 on the local server to /home/user/ on the remote server at 192.168.1.3.
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