From: "Michael A. Kangin" <mak@complife.ru> To: ALT Linux Community general discussions <community@lists.altlinux.org> Subject: [Comm] ssh, pam, empty passwords Date: Tue, 20 Feb 2018 23:27:00 +0100 Message-ID: <bfa847bd-4e9a-2ebe-ccc1-7504c7ebbd98@complife.ru> (raw) Здравствуйте. Обнаружилось, что если у пользователя пустой пароль, то: - sshd не пускает с пустым паролем, потому что PermitEmptyPasswords no, - sshd пускает с _любым_ непустым паролем, наверное потому что везде nullok в PAM'ах. sshd[2995]: pam_tcb(sshd:auth): Authentication passed for altlinux from (uid=0) В мире существует такая интересная опция, как nullok_secure: The default action of this module is to not permit the user access to a service if their official password is blank. The nullok_secure argument overrides this default and allows any user with a blank password to access the service as long as the value of PAM_TTY is set to one of the values found in /etc/securetty. А у нас почему-то нет: sshd[2921]: pam_tcb(sshd:auth): Unrecognized option: nullok_secure как быть? хотелось бы, чтобы пользователь с пустым паролем не мог залогиниться по SSH, но мог с консоли. при этом полностью отключать аутентификацию по паролям нежелательно.
next reply other threads:[~2018-02-20 22:27 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-02-20 22:27 Michael A. Kangin [this message] 2018-02-20 22:35 ` Michael A. Kangin
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