Hello,
I was trying to setup 2fa for our Linux server running on Oracle Linux 8.10. everything seemed fine until I discovered that when i entered a wrong password, duo still prompts me for a 2fa code or push notification depending on what i choose. Is this normal?
my /etc/ssh/sshd_config
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
HostKey /etc/ssh/ssh_host_ed25519_key
SyslogFacility AUTHPRIV
PermitRootLogin yes
AuthorizedKeysFile .ssh/authorized_keys
PasswordAuthentication yes
AuthenticationMethods password keyboard-interactive
ChallengeResponseAuthentication yes
GSSAPIAuthentication yes
GSSAPICleanupCredentials no
UsePAM yes
X11Forwarding yes
PrintMotd no
UseDNS no
AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES
AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT
AcceptEnv LC_IDENTIFICATION LC_ALL LANGUAGE
AcceptEnv XMODIFIERS
Subsystem sftp /usr/libexec/openssh/sftp-server
my /etc/pam.d/sshd
#%PAM-1.0
auth substack password-auth
auth sufficient pam_duo.so
auth required pam_deny.so
auth required pam_env.so
auth include postlogin
account required pam_sepermit.so
account required pam_nologin.so
account include password-auth
password include password-auth
# pam_selinux.so close should be the first session rule
session required pam_selinux.so close
session required pam_loginuid.so
# pam_selinux.so open should only be followed by sessions to be executed in the user context
session required pam_selinux.so open env_params
session required pam_namespace.so
session optional pam_keyinit.so force revoke
session optional pam_motd.so
session include password-auth
session include postlogin
