Forum Linux.général durcissement sécurité linux : configurer pam

• # syntaxe & ordre

  Posté par bubar🦥 (Mastodon) le 24 octobre 2022 à 21:31. Évalué à 4.

  

  Bonsoir,

  1) poster le fichier complet /etc/pam.d/login (une erreur d'ordre est plus vite arrivée qu'une erreur de syntaxe)
  2) poster le contexte de votre test de validation (chaque fichier de pam couvre un usage précis, par exemple /etc/pam.d/sshd)
  3) préciser votre distribution (certains utilisent faillock plutôt que pam_tally)

  Bref il faut plus de contexte et de précisions pour avoir une réponse qui ne prenne de temps à personne

  • [^] # Re: syntaxe & ordre

    Posté par kr1p le 25 octobre 2022 à 11:47. Évalué à 1.

    

    1.Voilà le contenu du fichier
    ```

    #
    # The PAM configuration file for the Shadow `login' service
    #
    
    # Enforce a minimal delay in case of failure (in microseconds).
    # (Replaces the `FAIL_DELAY' setting from login.defs)
    # Note that other modules may require another minimal delay. (for example,
    # to disable any delay, you should add the nodelay option to pam_unix)
    auth       optional   pam_faildelay.so  delay=3000000
    
    # Outputs an issue file prior to each login prompt (Replaces the
    # ISSUE_FILE option from login.defs). Uncomment for use
    # auth       required   pam_issue.so issue=/etc/issue
    
    # Disallows other than root logins when /etc/nologin exists
    # (Replaces the `NOLOGINS_FILE' option from login.defs)
    auth       requisite  pam_nologin.so
    
    # SELinux needs to be the first session rule. This ensures that any
    # lingering context has been cleared. Without this it is possible
    # that a module could execute code in the wrong domain.
    # When the module is present, "required" would be sufficient (When SELinux
    # is disabled, this returns success.)
    session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so close
    
    # Sets the loginuid process attribute
    session    required     pam_loginuid.so
    
    # Prints the message of the day upon successful login.
    # (Replaces the `MOTD_FILE' option in login.defs)
    # This includes a dynamically generated part from /run/motd.dynamic
    # and a static (admin-editable) part from /etc/motd.
    session    optional   pam_motd.so motd=/run/motd.dynamic
    session    optional   pam_motd.so noupdate
    
    # SELinux needs to intervene at login time to ensure that the process
    # starts in the proper default security context. Only sessions which are
    # intended to run in the user's context should be run after this.
    # pam_selinux.so changes the SELinux context of the used TTY and configures
    # SELinux in order to transition to the user context with the next execve()
    # call.
    session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so open
    # When the module is present, "required" would be sufficient (When SELinux
    # is disabled, this returns success.)
    
    # This module parses environment configuration file(s)
    # and also allows you to use an extended config
    # file /etc/security/pam_env.conf.
    # 
    # parsing /etc/environment needs "readenv=1"
    session       required   pam_env.so readenv=1
    # locale variables are also kept into /etc/default/locale in etch
    # reading this file *in addition to /etc/environment* does not hurt
    session       required   pam_env.so readenv=1 envfile=/etc/default/locale
    
    # Standard Un*x authentication.
    @include common-auth
    
    # This allows certain extra groups to be granted to a user
    # based on things like time of day, tty, service, and user.
    # Please edit /etc/security/group.conf to fit your needs
    # (Replaces the `CONSOLE_GROUPS' option in login.defs)
    auth       optional   pam_group.so
    
    # Uncomment and edit /etc/security/time.conf if you need to set
    # time restraint on logins.
    # (Replaces the `PORTTIME_CHECKS_ENAB' option from login.defs
    # as well as /etc/porttime)
    # account    requisite  pam_time.so
    
    # Uncomment and edit /etc/security/access.conf if you need to
    # set access limits.
    # (Replaces /etc/login.access file)
    # account  required       pam_access.so
    
    # Sets up user limits according to /etc/security/limits.conf
    # (Replaces the use of /etc/limits in old login)
    session    required   pam_limits.so
    
    # Prints the last login info upon successful login
    # (Replaces the `LASTLOG_ENAB' option from login.defs)
    session    optional   pam_lastlog.so
    
    # Prints the status of the user's mailbox upon successful login
    # (Replaces the `MAIL_CHECK_ENAB' option from login.defs). 
    #
    # This also defines the MAIL environment variable
    # However, userdel also needs MAIL_DIR and MAIL_FILE variables
    # in /etc/login.defs to make sure that removing a user 
    # also removes the user's mail spool file.
    # See comments in /etc/login.defs
    session    optional   pam_mail.so standard
    
    # Create a new session keyring.
    session    optional   pam_keyinit.so force revoke
    
    # Standard Un*x account and session
    @include common-account
    @include common-session
    @include common-password
    auth    required    pam_tally.so deny=3 lock_time=300    
    

    ```C'est le fichier par défaut auquel j'ai rajouté la ligne à la fin.

    2&3. test de validation : redémarrage de la machine. Login à l'écran de démarrage de linux debian (linux mint lmde5)

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