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在 sshd pam 中将 google-authenticator 的 IP 列入白名单

tag-icon • tag-icon ubuntu ssh ip pam google-authenticator
在 sshd pam 中将 google-authenticator 的 IP 列入白名单

我的Ubuntu 12.04服务器使用google-authenticator pam模块为ssh提供两步验证，需要让某个IP不需要输入验证码。

/etc/pam.d/sshd 文件如下：

# PAM configuration for the Secure Shell service

# Read environment variables from /etc/environment and
# /etc/security/pam_env.conf.
auth       required     pam_env.so # [1]
# In Debian 4.0 (etch), locale-related environment variables were moved to
# /etc/default/locale, so read that as well.
auth       required     pam_env.so envfile=/etc/default/locale

# Standard Un*x authentication.
@include common-auth

# Disallow non-root logins when /etc/nologin exists.
account    required     pam_nologin.so

# Uncomment and edit /etc/security/access.conf if you need to set complex
# access limits that are hard to express in sshd_config.
# account  required     pam_access.so

# Standard Un*x authorization.
@include common-account

# Standard Un*x session setup and teardown.
@include common-session

# Print the message of the day upon successful login.
session    optional     pam_motd.so # [1]

# Print the status of the user's mailbox upon successful login.
session    optional     pam_mail.so standard noenv # [1]

# Set up user limits from /etc/security/limits.conf.
session    required     pam_limits.so

# Set up SELinux capabilities (need modified pam)
# session  required     pam_selinux.so multiple

# Standard Un*x password updating.
@include common-password

auth required pam_google_authenticator.so

我已经尝试添加

auth sufficient pam_exec.so /etc/pam.d/ip.sh

行位于 google-authenticator 行上方，但我不明白如何在 bash 脚本中检查 IP 地址。

答案1

您无法允许或拒绝使用 pam_exec 进行身份验证。您应该做的是添加类似以下内容的内容

account  sufficient pam_access.so

在 google authenticator 行上方/etc/security/access.conf输入

+:ALL:<ip>

答案2

我在输入账户密码之前使用了 google 身份验证器。因此我无法使用 pam_access，因为它会绕过账户密码。因此我克隆了 google 身份验证器并实现了核心白名单功能。

您可以从https://code.google.com/r/kazimsarikaya-google-authenticatior-withwhitelist/。

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