The SCP program on Host 1 opens an SSH connection to Host 2 and transfers the file saved on Host 1 to Host 2 as if it were a local file.įor this process to work, a public SSH key has to be deposited from Host 1 to Host 2.

The SCP program on the user’s local system opens a SSH connection to Host 1 and runs the SCP program located there.

The user instructs the SCP tool on the local system to transfer a file from Host 1 to Host 2.In the original version, in which a file is transferred from one remote system (host) to another host, the following process occurs: The private method is generally preferable to the public one. When using SSH, remote systems can be accessed with a username and password or SSH Keys (public/private key pairs). SCP uses the SSH protocol to establish encrypted connections. If you want to copy a file between two remote systems using the Linux SCP command, there are a couple of things to take into consideration. Nowadays there are modern alternatives to SCP that are preferred for most use cases. A reference implementation that’s part of the OpenSSH project is all there is. This means that it’s not standardized, and there’s no RFC document or similar specification. However, one significant disadvantage of the SCP protocol is that the software has grown organically. As usual on Linux, the SCP command can be accessed via the command line. Since SCP is part of the widely used OpenSSH distribution, it’s available on pretty much every system. The tool acts as a daemon and client for the SCP protocol. The Linux SCP command is a software that runs on the local system and the server. the RCP tool (Remote Copy), which copies files in the network without encryption.the SSH protocol (Secure Shell), which enables encrypted access to remote systems.The name of the SCP protocol is taken from the two technologies it’s based on: SCP stands for “secure copy” – with “secure” referring to the encryption of the data transfer. SCP is the classic tool for making encrypted copies between two Linux- and POSIX-compatible computers in a network.

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