SSH Server : Password Authentication2015/04/24

	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:~#

apt-get -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

root@dlp:~#

systemctl restart ssh

SSH Client : Ubuntu

	Configure SSH Client of Ubuntu.
[2]	Install SSH Client.

root@client:~#

apt-get -y install openssh-client

[3]	Connect to the SSH server with a common user.

# ssh [username@hostname or IP address]

root@client:~#

ssh vervet@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.
vervet@dlp.srv.world's password:

# password of the user

vervet@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

vervet@client:~$

ssh vervet@dlp.srv.world "cat /etc/passwd"

vervet@dlp.srv.world's password:

root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
...
...
vervet:x:1000:1000:vervet,,,:/home/vervet:/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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