$ ssh-keygen -t dsa Generating public/private dsa key pair. Enter file in which to save the key (/home/xxx/.ssh/id_dsa): [Enter] Created directory '/home/xxx/.ssh'. Enter passphrase (empty for no passphrase): xxx [Enter] Enter same passphrase again: xxx [Enter] Your identification has been saved in /home/xxx/.ssh/id_dsa. Your public key has been saved in /home/xxx/.ssh/id_dsa.pub. The key fingerprint is: xxx
$ ftp hostname Connected to hostname (ip address). 220 hostname FTP server (version) ready. Name (hostname): username 331 Password required for username. Password: 230 User username logged in. Remote system type is UNIX. Using binary mode to transfer files. ftp> cd .ssh 250 CWD command successful. ftp> lcd .ssh Local directory now /home/xxx/.ssh ftp> put id_dsa.pub local: id_dsa.pub remote: id_dsa.pub 227 Entering Passive Mode (ip address) 150 Opening BINARY mode data connection for 'id_dsa.pub'. 226 Transfer complete. ftp> bye 221 Goodbye.
$ telnet hostname Trying ip address... Connected to hostname. Escape character is '^]'. FreeBSD/i386 (hostname) (ttyp0) login: username Password: Last login: datetime from ip address Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD version : datetime // Sakura internet rental server service %cd .ssh %touch authorized_keys %chmod 600 authorized_keys %cat id_dsa.pub >> authorized_keys %rm id_dsa.pub %logout Connection closed by foreign host.
$ ssh hostname -l username The authenticity of host 'hostname (ip address)' can't be established. DSA key fingerprint is xxx. Are you sure you want to continue connecting (yes/no)? yes [Enter] Warning: Permanently added 'hostname,ip address' (DSA) to the list of known hosts. Enter passphrase for key '/home/xxx/.ssh/id_dsa': xxx [Enter] Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD version : datetime // Sakura internet rental server service %logout Connection to hostname closed.