Debian 8 Jessie
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SSH Server : Password Authentication
2015/05/02
 
Configure SSH Server to manage a server from the remore computer. SSH uses 22/TCP.
[1] Install and configure sshd with Password Authentication.
root@dlp:~#
aptitude -y install ssh
root@dlp:~#
vi /etc/ssh/sshd_config
# line 28: change to no (prohibit root login

# default setting "without-password" means that root login is permited but require key-pair authentication

PermitRootLogin
no
root@dlp:~#
systemctl restart ssh

SSH Client : Debian
 
Configure SSH Client of Debian.
[2] Install SSH Client.
root@client:~#
aptitude -y install openssh-client
[3] Connect to the SSH server with a common user.
# ssh [username@hostname or IP address]

root@client:~#
ssh jessie@dlp.srv.world

The authenticity of host 'dlp.srv.world (<no hostip for proxy command>)' can't be established.
ECDSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:60:90:d8.
Are you sure you want to continue connecting (yes/no)?
yes

Warning: Permanently added 'dlp.srv.world' (ECDSA) to the list of known hosts.
jessie@dlp.srv.world's password:
# password of the user

jessie@dlp:~$
# logined

[4] It's possbile to execute commands on remote Host with adding commands to ssh command.
# for example, open /etc/passwd on remote host

jessie@client:~$
ssh jessie@dlp.srv.world "cat /etc/passwd"

jessie@dlp.srv.world's password:
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
...
...
jessie:x:1000:1000:jessie,,,:/home/jessie:/bin/bash
sshd:x:108:65534::/var/run/sshd:/usr/sbin/nologin
SSH Client : Windows
 
Configure SSH Client of Windows.
[5]
Get a SSH Client for Windows. This example shows to use Putty like follows.
Input your server's IP address and Click 'Open' button.
[6] After authentication on SSH server, it's possible to login remotely with SSH.
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