Scp (outdated)

wikipedia:Secure copy (scp) is a means of securely transferring computer files between a local host and a remote host or between two remote hosts. scp implements a progress bar to estimate transfers.

http://man7.org/linux/man-pages/man1/scp.1.html

scp USERNAME@SERVER:/tmp/FILE ./
USERNAME@SERVER's password:
Could not chdir to home directory /home/USERNAME: No such file or directory
protocol error: mtime.sec not present

According to OpenSSH developers in April 2019 the scp protocol is outdated, inflexible and not readily fixed; they recommend the use of more modern protocols like sftp and rsync for file transfer.

Activities

1. Understand the differences between cp, scp and rsync: https://stackoverflow.com/questions/20244585/how-does-scp-differ-from-rsync
2. Review security advisories related to scp: CVE-2019-6111 related to scp tool and protocol allowing to overwrite arbitrary files in the scp client target directory

1. pv </dev/zero | ssh REMOTE_SERVER 'cat >/dev/null'

Related commands

• pscp (PuTTY)
• sftp
• jailkit
• magic-wormhole

See also

• sftp, sftp chroot configuration, Filezilla, Core FTP, sshfs, internal-sftp, sshd_config, SFTP protocol, Secure file transfer program (sftp), aws_transfer_connector.sftp_connector
• cp, dd, sftp, scp, rsync, casync, mv, fio, ln, docker cp, kubectl cp, minikube cp, multipass transfer, Copy-Item, Xcopy
• OpenSSH (changelog): /etc/ssh/sshd_config | /etc/ssh/ssh_config | ~/.ssh/ | openSSL | sshd logs | sftp | scp | authorized_keys | ssh-keygen | ssh-keyscan | ssh-add | ssh-agent | ssh | Ssh -O stop | ssh-copy-id | CheckHostIP | UseKeychain, OpenSSF, ~/.ssh/authorized_keys

"OpenSSH 8.0". OpenSSH Release Notes. 17 April 2019.

https://nvd.nist.gov/vuln/detail/CVE-2019-6111