ssh login --

[bruce]

here's the sshd_config from the working/test machine.  root login is
fine for testing.. I more or less shut the box down when not using it,
so I'm not too worried about attacks.. (i know, a bit foolish..)

my issue though.. is I've only got the one local machine I use to
interface with the DO instances.. so wouldn't cloning, give the same
actions in the new clone?

I did discover than the /etc/ssh/sshd_config.d/50--* file had been
changed.. so I changed it to match the initial instance with a ssh
restart ... still no change in logging in..

cat /etc/ssh/sshd_config

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

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

# 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.

#HostKeyAlgorithms +ssh-rsa
HostKeyAlgorithms +ssh-rsa,ssh-dss
PubkeyAcceptedKeyTypes +ssh-rsa

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

# Port and ListenAddress options are not used when sshd is socket-activated,
# which is now the default in Ubuntu.  See sshd_config(5) and
# /usr/share/doc/openssh-server/README.Debian.gz for details.
#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 yes
#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 yes
#PermitEmptyPasswords no

# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
KbdInteractiveAuthentication 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 KbdInteractiveAuthentication and
# PasswordAuthentication.  Depending on your PAM configuration,
# PAM authentication via KbdInteractiveAuthentication may bypass
# the setting of "PermitRootLogin yes
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and KbdInteractiveAuthentication to 'no'.
UsePAM yes

#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 /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

On Sun, Jul 14, 2024 at 3:25 PM Colin Law <clanlaw at gmail.com> wrote:
>
>
>
> On Sun, 14 Jul 2024, 19:57 bruce, <badouglas at gmail.com> wrote:
>>
>> Hi.
>>
>> Did a clone of a working ubuntu instance on digitalocean.
>>
>> Trying to login now, as "root at 1.2.3.4 from the local test system where I'm root.
>>
>> The login goes through without asking for passwd!! -- not what the
>> initial test instance was set to..
>
>
> Had you setup access via keys? Try to ssh in from a different machine.
>
> Colin
>
>
>>
>> Did a check of the "/etc/ssh/sshd_config" on both systems. As far as i
>> can see, no diff.
>>
>> On the local machine, I changed to a diff user, and then ssh @1.2.3.4
>> and i get
>>  Permission denied (publickey).
>>
>> Looked over different net/sites, can't see what I'm missing.
>>
>> Any thoughts?
>>
>> thanks
>>
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>
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