Password Authentication on Debian

SSH Server : Password Authentication

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 ()' 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, Need Putty?, Download on link below
Download Putty
Input your server's IP address and Click 'Open' button.

[6] After authentication on SSH server, it's possible to login remotely with SSH.

DANS Media