Ssh howto

• ssh Grundlagen
• ssh Verbindungsaufbau
• ssh Clientseite
• ssh Serverseite

Serverseite

SSH Server installieren

root@alita:~# apt-get install openssh-server
...

Konfigurationsdatei

/etc/ssh/sshd_config

# What ports, IPs and protocols we listen for
Port 22   
                            
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::                                                           
#ListenAddress 0.0.0.0                                                      
Protocol 2                                                                  
# HostKeys for protocol version 2                                           
HostKey /etc/ssh/ssh_host_rsa_key                                           
HostKey /etc/ssh/ssh_host_dsa_key                                           
#Privilege Separation is turned on for security                             
UsePrivilegeSeparation yes                                                  

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600                         
ServerKeyBits 768                                    
...

Zusätzlichen Port zum Lauschen auf Anfragen hinzufügen

/etc/ssh/sshd_config

# What ports, IPs and protocols we listen for
Port 22   
Port 9998                             
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::                                                           
#ListenAddress 0.0.0.0

RSA Key Fingerprint anzeigen

root@alita:/etc/ssh# ssh-keygen -f /etc/ssh/ssh_host_rsa_key.pub -l
2048 8c:d1:1f:d2:5e:76:cd:75:74:c4:b7:b2:c7:f6:50:78 /etc/ssh/ssh_host_rsa_key.pub (RSA)