PAM on Mac OS X
Temple jump - prepare to fall edition mac os. As you may know, PAM is used everywhere on modern UNIX systems. Linux and Mac OS X use it to authenticate users. If you are a Mac user who likes to install weird stuff and edit PAM, you may have discovered that PAM under Mac OS X is totally undocumentated. Really, the only thing that you can have from Apple is a man page. You can't see which services use which file in /etc/pam.d/
. This is a big pain when you want to edit stuff on your Mac without fearing being locked out.
Like the others, it was created to turn a computer into a media center but it wasn't originally meant to run on limited hardware. And for that reason, it is a less limited operating system. Whereas OpenELEC and LibreELEC won't let you run anything besides Kodi, OSMC is a full operating system. You'll be able to run other software. Pop open Virtualbox, and Create a new Virtual Machine. Name this MacOS Mojave, and set it to Mac OS X (64-bit). Set the RAM to 4096 MB (or higher if you can achieve it!). When creating the disk, you can use either format versions.
Fortunately, there are some services that can be discovered easily. /etc/pam.d/sudo
is obviously the file for the sudo utility. If you want to edit stuff about it, just edit this file and don't forget to keep a root tab opened if you mess it up. The same for sshd. Just edit the file.
Mac OS X 10.6 or later. Ubuntu, Debian, and Fedora-based distributions are all supported. 64-bit installers are available. Recommended version: Ubuntu 14.10/16.04/18.04 and advanced version. System Requirements. Recommended Requirements. Intel® Core i7 CPU. 8GB or more of RAM. Like the others, it was created to turn a computer into a media center but it wasn't originally meant to run on limited hardware. And for that reason, it is a less limited operating system. Whereas OpenELEC and LibreELEC won't let you run anything besides Kodi, OSMC is a full operating system. You'll be able to run other software.
But I wanted to discover how to modify the login screen behaviour with PAM.
Mac OS X 10.6 or later. Ubuntu, Debian, and Fedora-based distributions are all supported. 64-bit installers are available. Recommended version: Ubuntu 14.10/16.04/18.04 and advanced version. System Requirements. Recommended Requirements. Intel® Core i7 CPU. 8GB or more of RAM. Like the others, it was created to turn a computer into a media center but it wasn't originally meant to run on limited hardware. And for that reason, it is a less limited operating system. Whereas OpenELEC and LibreELEC won't let you run anything besides Kodi, OSMC is a full operating system. You'll be able to run other software.
But I wanted to discover how to modify the login screen behaviour with PAM.
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A little bit of background before
As I said on this blog (in an article written in French) I own a Yubikey. This awesome device is used to generate One Time Password among other amazing stuff. I personnaly use it to login on my Mac, ssh onto my server and use sudo without typing any password. This is really great when you are somewhere and people can look at your keyboard. A password generated by a Yubikey looks like vvcubkglngtjjnkjlhjvgfdinferfkjldcffulgnbnjt
(In fact, this is a valid one, but used. Magicolors mac os. You can't do anything with it now. This the meaning of a One Time Password)
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To setup your Yubikey with your services, you need to edit PAM. Thanks to Yubico we have a PAM plugin for Yubikey. I will not describe how to setup it here, just explain my config. I added this tiny line auth sufficient pam_yubico.so id=42 key=THISPARTISSECRET url=http://yk.cubox.me/wsapi/2.0/verify?id=%d&otp=%s verbose_otp
in /etc/pam.d/ssh
on my server, among other things. When I try to login, I get prompted with Yubikey for 'cubox':
and I can touch my Yubikey in order to log in. I love it.
Well, but how to setup my Mac with it?
一、什么是Armbian?Armbian是单板计算机(SBCs)的一个基本操作系统平台,其他的项目也可以使用它作为基础。专门用于ARM开发板的轻量级Debian或Ubuntu(Ubuntu也是派生自Debian)每一个系统都可以通过Armbian Build Tools进行编译,组装和优化它拥有强大的构建和软件开发工具,我们可以进行 custom builds还拥有.
I described how to use it, it's the same under Linux and Mac OS X. But only for sudo and sshd.
If you want to use it with your login screen, you need to add this line in /etc/pam.d/authorization
.
Unfortunatly, this does not use the PAM plugin to unlock my locked screen (You know, the thing you have when you lock your session, with your wallpaper and your image). If someone have an answer, please contact me! /etc/pam.d/screensaver
does not help.
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Yeah, I am not joking. All this bloody article for just this line of important information. But as I said, this is documentated nowhere. I asked an Apple Genius and he was unable to answer me. Now, when I got prompted for my password, I just type enter and.. Magic. It took me almost half of a year to find this. Thanks Apple.
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Enjoy your secure login screen with Yubikey on your Mac! You don't need to buy the Rohos software for 32$. Just grab a root access and do some magic!