☰

Keine Kennwortabfrage – SSH

tag-icon • tag-icon server 20.04 ssh password
Keine Kennwortabfrage – SSH

Ich habe einen neuen Ubuntu-Server in Linode eingerichtet. Ich versuche, Kennwortanmeldungen zu deaktivieren und habe dies für rootBenutzer erfolgreich geschafft, aber für einen neuen Benutzer (lrehan), den ich erstellt habe, ist dies nicht möglich.

rootAnmeldung per Passwort/SSH-Schlüssel nicht möglich, lrehanAnmeldung ohne Passwort oder durch Nichtangabe des SSH-Schlüssels möglich (da keine Passwortabfrage erfolgt)

root login

  1. ssh root@ip - FEHLGESCHLAGEN - ERWARTETE ERGEBNISSE
  2. ssh -i ~./ssh/linode root@ip – FEHLGESCHLAGEN – ERWARTETE ERGEBNISSE

lrehan login

  1. ssh lrehan@ip - LOGGT EIN (KEINE PASSWORTABFRAGE) - NICHT ERWARTET
  2. ssh -i ~./ssh/linode lrehan@ip - MELDE DICH AN - ERWARTETE ERGEBNISSE

Hier ist meine sshd_configDatei

#       $OpenBSD: sshd_config,v 1.103 2018/04/09 20:41:22 tj Exp $

# This is the sshd server system-wide configuration file.  See
# sshd_config(5) for more information.

# This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin

# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented.  Uncommented options override the
# default value.

Include /etc/ssh/sshd_config.d/*.conf

#Port 22
#AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::

#HostKey /etc/ssh/ssh_host_rsa_key
#HostKey /etc/ssh/ssh_host_ecdsa_key
#HostKey /etc/ssh/ssh_host_ed25519_key

# Ciphers and keying
#RekeyLimit default none

# Logging
#SyslogFacility AUTH
#LogLevel INFO

# Authentication:

#LoginGraceTime 2m
PermitRootLogin no
StrictModes yes
#MaxAuthTries 6
#MaxSessions 10

PubkeyAuthentication yes

# Expect .ssh/authorized_keys2 to be disregarded by default in future.
#AuthorizedKeysFile     .ssh/authorized_keys .ssh/authorized_keys2

#AuthorizedPrincipalsFile none

#AuthorizedKeysCommand none
#AuthorizedKeysCommandUser nobody

# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
HostbasedAuthentication no
# Change to yes if you don't trust ~/.ssh/known_hosts for
#HostbasedAuthentication
#IgnoreUserKnownHosts no
# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes

# To disable tunneled clear text passwords, change to no here!
PasswordAuthentication no
PermitEmptyPasswords no

# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication no

# Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes
#KerberosGetAFSToken no

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes
#GSSAPIStrictAcceptorCheck yes
#GSSAPIKeyExchange no

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication.  Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM no

#AllowAgentForwarding yes
#AllowTcpForwarding yes
#GatewayPorts no
X11Forwarding yes
#X11DisplayOffset 10
#X11UseLocalhost yes
#PermitTTY yes
PrintMotd no
#PrintLastLog yes
#TCPKeepAlive yes
#PermitUserEnvironment no
#Compression delayed
#ClientAliveInterval 0
#ClientAliveCountMax 3
#UseDNS no
#PidFile /var/run/sshd.pid
#MaxStartups 10:30:100
#PermitTunnel no
#ChrootDirectory none
#VersionAddendum none

# no default banner path
#Banner none

# Allow client to pass locale environment variables
AcceptEnv LANG LC_*

# override default of no subsystems
Subsystem       sftp    /usr/lib/openssh/sftp-server

# Example of overriding settings on a per-user basis
#Match User anoncvs
#       X11Forwarding no
#       AllowTcpForwarding no
#       PermitTTY no
#       ForceCommand cvs server

Can someone direct me or help me on what is going wrong with this? Thanks!

Antwort1

Ich habe es mit dieser Antwort gelösthttps://askubuntu.com/a/1440509/1713168

Im Verzeichnis /etc/ssh/sshd_config.d/ gibt es nur eine .conf-Datei (50-cloud-init.conf), aber darin befindet sich die Zeile: PasswordAuthentication yes

Ich habe die Zeile in #PasswordAuthentication geändert.

und ich habe SSH neu gestartet. Jetzt funktioniert es. Ich kann nur mit dem SSH-Schlüssel zugreifen.

verwandte Informationen