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Erster Verbindungsaufbau

alice@u3:~$ ssh bob@u2

The authenticity of host 'u2 (172.16.10.2)' can't be established.
ECDSA key fingerprint is SHA256:Dp+DL5apc0A3rsUKCPcvbLSBmb4BSQXDsJGLJR0r0GA.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes

bob@u2's password:

bob@u2:~$

Exit

bob@u2:~$ exit

alice@u3:~$ cat .ssh/known_hosts

|1|5BdpwWv6AjvkrERbWPK0NCdeWiY=|XEQyvQ0nw5bIIM7UHd6rbJwIA1A= ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBNmNwRv2mqfgV3SwvASy48CIjb4oSmxqcQf7e28dCYQxGRfIXiQK5HYKagkqsfBgai+iIiLKDrkav7tvqX0XsAQ=
|1|m9IwDx96MLYRVu8WE49HjWRcdyk=|CVTp1yv65aqMW6Y1zWngj0j1oW8= ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBNmNwRv2mqfgV3SwvASy48CIjb4oSmxqcQf7e28dCYQxGRfIXiQK5HYKagkqsfBgai+iIiLKDrkav7tvqX0XsAQ=

Der Publikkey des Server u3 wurde hinzugefügt

Befehl ausführen

alice@u3:~$ ssh bob@u2 hostname

bob@u2's password:

u2

alternativer Aufruf

alice@u3:~$ ssh -l bob u2

bob@u2's password:

bob@u2:~$

Angabe eines speziellen Ports

alice@u3:~$ ssh -p 8822 -l bob u2

bob@u2's password:

bob@u2:~$

Schlüsselpaar erzeugen

alice@u3

~$ ssh-keygen -b 4096

Generating public/private rsa key pair.
Enter file in which to save the key (/home/alice/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /home/alice/.ssh/id_rsa
Your public key has been saved in /home/alice/.ssh/id_rsa.pub
The key fingerprint is:
SHA256:PrjyG7hdgYyB8o3G6AylcbWvmPjjJr29l4yGS7uAR44 alice@u3
The key's randomart image is:
+---[RSA 4096]----+
|    .            |
|   o .           |
|o + o            |
| X o = .         |
|+ * o + S        |
|=* o o o .       |
|E+*.ooo.+        |
|.==o+o++ .       |
| +B*+==.         |
+----[SHA256]-----+

SSH Optionen

• Ausgewählte SSH Optionen