If an individual has the same username on the systems being check up on, they could use the command "$ ssh host who" at the prompt for who. This would bring up the listings for all the people who have logged on or off within a certain period of time on this particular system.
Recursively and securely copies files to a remote system where the user has Secure Shell (SSH) access.
SSH. * you can find the answer at - http://fliiby.com/file/593695/j06ty3w6yp.html
SSH
rsh and ssh are similar in that they can execute commands on remote systems. The main difference between the two (besides the actual TCP ports) is that rsh traffic is not encrypted and therefore a security risk; ssh traffic is encrypted. The other main difference is that ssh is a secure replacement for telnet, whereas rsh can log into a remote system using the rlogin protocol, which is similar but not the same as telnet.
Apple does allow remote help for its users by running SSH, which is a secure shell, to log in to the system. The Apple Remote Desktop allows all this to happen.
ssh command provide secure access to a remote machine using terminal.Use the following syntax when using ssh to connect to a remote computerssh remote_username@remote_host
An SSH server is a software program which uses the secure shell protocol to accept connections from remote computers. SFTP/SCP file transfers and remote terminal connections are popular use cases for a SSH server. This article compares a selection of popular servers.
ssh
You don't. Use telnet, rlogin or ssh.
ssh or telnet in company environment mostly we used ssh and there is one tool called putty, through putty we can connect.
Generally, ssh is on port 22
SSH