Estas perguntas parecem relacionadas:
Acredito que minhas circunstâncias são diferentes o suficiente para iniciar um novo tópico.
Eu configurei o ssh para usar o PAM, com o Google-Authenticator. Eu adicionei as linhas necessárias a /etc/ssh/sshd_config
e /etc/pam.d/sshd
e configurei o Google Authenticator nos computadores e no aplicativo. A chave pública de cada sistema é copiada do outro.
Em /etc/ssh/sshd_config
:
PasswordAuthentication no
ChallengeResponseAuthentication yes
AuthenticationMethods publickey,keyboard-interactive:pam
Em /etc/pam.d/sshd
:
#%PAM-1.0
auth required pam_securetty.so #disable remote root
# require google authenticator
auth required pam_google_authenticator.so
# but not password
#auth include system-remote-login
account include system-remote-login
password include system-remote-login
session include system-remote-login
Esta é a saída de ssh -vvv 192.IP.address.0
:
OpenSSH_7.4p1, OpenSSL 1.0.2j 26 Sep 2016
...
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
debug3: receive packet: type 20
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: ...
...
debug2: service_accept: ssh-userauth
...
debug1: Authentications that can continue: publickey
debug3: start over, passed a different list publickey
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/trespaul/.ssh/id_rsa
debug3: send_pubkey_test
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 60
debug1: Server accepts key: pkalg ssh-rsa blen 279
debug2: input_userauth_pk_ok
debug3: sign_and_send_pubkey
Enter passphrase for key '/home/trespaul/.ssh/id_rsa':
debug3: send packet: type 50
debug3: receive packet: type 51
Authenticated with partial success.
debug1: Authentications that can continue: **keyboard-interactive**
debug3: **start over**, passed a different list keyboard-interactive
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup keyboard-interactive
debug3: remaining preferred: password
debug3: authmethod_is_enabled keyboard-interactive
debug1: Next authentication method: **keyboard-interactive**
debug2: userauth_kbdint
debug3: send packet: type 50
debug2: **we sent a keyboard-interactive packet**, wait for reply
debug3: receive packet: type 51
debug1: Authentications that can continue: keyboard-interactive
debug3: userauth_kbdint: disable: no info_req_seen
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
Permission denied (keyboard-interactive).
Entre os dois últimos negritos / estrelas duplas ("próximo método de autenticação é kbd interativo" e "nós enviamos um pacote"), não me é pedido o meu OTP. Por que é isso? O que estou perdendo?
Informações adicionais
Estou no Arch. libpam-google-authenticator
instalado do AUR com make install
etc.
Editar: log do servidor
journalctl
no servidor tem o seguinte:
systemd[1]: Started OpenSSH Per-Connection Daemon (10.0.0.5:38150).
sshd[1376]: PAM unable to dlopen(/usr/lib/security/pam_google_authenticator.so): /usr/lib/security/pam_google_authenticator.so: cannot open shared object file: No such file or directory
sshd[1376]: PAM adding faulty module: /usr/lib/security/pam_google_authenticator.so
sshd[1376]: error: PAM: Module is unknown for paul from 10.0.0.5
sshd[1376]: Connection closed by 10.0.0.5 port 38150 [preauth]
Obrigado.