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From: ng0 <contact.ng0@cryptolab.net>
To: "Clément Lassieur" <clement@lassieur.org>
Cc: guix-devel@gnu.org
Subject: Re: [PATCH 0/2] Openssh service patches
Date: Fri, 17 Feb 2017 17:18:33 +0000	[thread overview]
Message-ID: <20170217171833.iazdehmarsnpjvdm@wasp> (raw)
In-Reply-To: <20170217163708.10743-1-clement@lassieur.org>

On 17-02-17 17:37:06, Clément Lassieur wrote:
> The first patch adds PAM to OpenSSH service, and enables it by default.

Definitely a good idea. If this is applied I think it should be
communicated if it breaks peoples configurations. On the other hand,
guix reconfigure lint already complains if an option is no longer
present.
I think notifying about certain changes if they break previous
configurations is nice to have (but not mandatory, just the way I would do it).
 
The code looks reasonable, I haven't applied the changes to review it.

> This allows to log in (with a public key) if the account is locked.
> Otherwise, one would have to set up a password manually or, say, put '*' in
> /etc/shadow (with 'usermod -p').  It matters because accounts created by
> GuixSD are locked.
> 
> Whether to enable it by default is debatable because it is disabled upstream,
> but it is enabled on every distribution I had a look at.
> 
> The relevant part of the documentation is:
> 
> --8<---------------cut here---------------start------------->8---
> UsePAM  Enables the Pluggable Authentication Module interface.  If set to
>         yes this will enable PAM authentication using
>         ChallengeResponseAuthentication and PasswordAuthentication in
>         addition to PAM account and session module processing for all
>         authentication types.
> 
>         Because PAM challenge-response authentication usually serves an
>         equivalent role to password authentication, you should disable
>         either PasswordAuthentication or ChallengeResponseAuthentication.
> 
>         If UsePAM is enabled, you will not be able to run sshd(8) as a
>         non-root user.  The default is no.
> --8<---------------cut here---------------end--------------->8---
> 
> It also explains why I set ChallengeResponseAuthentication to 'no' by default.
> 
> The second patch removes the 'RSAAuthentication' option, which causes warnings
> because it is deprecated.
> 
> Clément Lassieur (2):
>   services: openssh: Use PAM in sshd by default.
>   services: openssh: remove deprecated 'RSAAuthentication' option.
> 
>  gnu/services/ssh.scm | 24 ++++++++++++++++++------
>  1 file changed, 18 insertions(+), 6 deletions(-)
> 
> -- 
> 2.11.1
> 
> 

-- 
ng0 -- https://www.inventati.org/patternsinthechaos/

  parent reply	other threads:[~2017-02-17 17:16 UTC|newest]

Thread overview: 101+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-17 16:37 [PATCH 0/2] Openssh service patches Clément Lassieur
2017-02-17 16:37 ` [PATCH 1/2] services: openssh: Use PAM in sshd by default Clément Lassieur
2017-02-17 16:37 ` [PATCH 2/2] services: openssh: remove deprecated 'RSAAuthentication' option Clément Lassieur
2017-02-17 17:18 ` ng0 [this message]
2017-02-17 17:45   ` [PATCH 0/2] Openssh service patches Julien Lepiller
2017-02-18 11:46     ` [PATCH 1/2] services: openssh: Enable PAM Clément Lassieur
2017-02-18 11:46       ` [PATCH 2/2] services: openssh: Remove deprecated 'RSAAuthentication' option Clément Lassieur
2017-02-18 15:43         ` Ricardo Wurmus
2017-02-18 18:32           ` Clément Lassieur
2017-02-19 18:54             ` ng0
2017-02-20 23:53               ` [PATCH 0/4] Openssh service patches Clément Lassieur
2017-02-20 23:53                 ` [PATCH 1/4] services: openssh: Enable PAM Clément Lassieur
2017-02-22  9:22                   ` Clément Lassieur
2017-02-22 21:07                     ` [PATCH] " Clément Lassieur
2017-03-02  7:34                       ` Danny Milosavljevic
2017-02-20 23:53                 ` [PATCH 2/4] services: openssh: Remove deprecated options Clément Lassieur
2017-03-02  7:45                   ` Danny Milosavljevic
2017-02-20 23:53                 ` [PATCH 3/4] services: openssh: Fix 'PrintLastLog' default behaviour Clément Lassieur
2017-03-02  7:37                   ` Danny Milosavljevic
2017-03-02 21:03                     ` Clément Lassieur
2017-03-02 21:06                       ` [PATCH 1/3] services: openssh: Enable PAM Clément Lassieur
2017-03-02 21:06                         ` [PATCH 2/3] services: openssh: Remove deprecated options Clément Lassieur
2017-03-03 10:16                           ` Danny Milosavljevic
2017-03-09 22:37                             ` Leo Famulari
2017-03-02 21:06                         ` [PATCH 3/3] services: openssh: Fix 'PrintLastLog' default behaviour Clément Lassieur
2017-03-03 10:19                           ` Danny Milosavljevic
2017-03-09 22:37                             ` Leo Famulari
2017-03-03 10:16                         ` [PATCH 1/3] services: openssh: Enable PAM Danny Milosavljevic
2017-03-09 22:37                           ` Leo Famulari
2017-03-10 18:25                         ` Danny Milosavljevic
2017-02-20 23:53                 ` [PATCH 4/4] services: openssh: Add 'subsystems' option Clément Lassieur
2017-03-02  7:44                   ` Danny Milosavljevic
2017-03-02 21:00                     ` Clément Lassieur
2017-03-05 14:50                       ` ng0
2017-03-07 20:49                         ` Danny Milosavljevic
2017-03-07 21:01                           ` Clément Lassieur
2017-03-16 10:03                             ` Ludovic Courtès
2017-03-16 20:45                               ` ng0
2017-03-16 20:50                                 ` Clément Lassieur
2017-03-17  5:36                                 ` John Darrington
2017-03-17 11:08                                   ` grammar usage (was: Re: [PATCH 4/4] services: openssh: Add 'subsystems' option.) ng0
2017-03-17 10:28                                     ` John Darrington
2017-03-17 10:42                                       ` ng0
2017-03-17 10:47                                         ` John Darrington
2017-03-17 10:57                                       ` grammar usage Andy Wingo
2017-03-17 11:12                                         ` John Darrington
2017-03-17 11:28                                           ` Andy Wingo
2017-03-17 13:58                                             ` Ricardo Wurmus
2017-03-17 14:13                                               ` John Darrington
2017-03-17 16:43                                               ` Mathieu Lirzin
2017-03-18 13:52                                                 ` Ludovic Courtès
2017-03-17 11:31                                           ` ng0
2017-03-17 16:13                                   ` grammar usage (was: Re: [PATCH 4/4] services: openssh: Add 'subsystems' option.) Tobias Geerinckx-Rice
2017-03-17 17:50                                     ` John Darrington
2017-03-17 16:21                                   ` [PATCH 4/4] services: openssh: Add 'subsystems' option Leo Famulari
2017-03-17 17:58                                     ` John Darrington
2017-03-18 11:09                                       ` ng0
2017-03-18 11:45                                         ` Mathieu Lirzin
2017-03-18 11:52                                           ` ng0
2017-03-18 12:10                                             ` John Darrington
2017-03-18 12:17                                               ` Catonano
2017-03-18 12:28                                           ` Catonano
2017-03-18 13:43                                         ` Being excellent to one another Ludovic Courtès
2017-03-19 15:47                                           ` dian_cecht
2017-03-19 16:33                                             ` John Darrington
2017-03-19 21:21                                             ` Ludovic Courtès
2017-03-19 22:40                                           ` Christopher Allan Webber
2017-03-20  2:57                                             ` dian_cecht
2017-03-20  6:36                                               ` John Darrington
2017-03-20  8:57                                                 ` Alex Sassmannshausen
2017-03-20  9:54                                                   ` John Darrington
2017-03-20 10:17                                                     ` Alex Sassmannshausen
2017-03-20 10:44                                                       ` John Darrington
2017-03-20 11:08                                                         ` Catonano
2017-03-20 11:21                                                         ` Alex Sassmannshausen
2017-03-20 11:53                                                           ` Pjotr Prins
2017-03-20 12:12                                                             ` ng0
2017-03-20 12:12                                                             ` John Darrington
2017-03-20 12:10                                                           ` John Darrington
2017-03-20 14:27                                                             ` Ludovic Courtès
2017-03-20 14:40                                                               ` John Darrington
2017-03-20 23:54                                                       ` dian_cecht
2017-03-21  8:50                                                         ` Ricardo Wurmus
2017-03-20 11:02                                                 ` Catonano
2017-03-20 15:09                                                 ` Christopher Allan Webber
2017-03-20 15:17                                                   ` John Darrington
2017-03-20 15:49                                                     ` Ludovic Courtès
2017-03-20 17:12                                                       ` John Darrington
2017-03-21  9:14                                                         ` Alex Sassmannshausen
2017-03-21 10:02                                                           ` pelzflorian (Florian Pelz)
2017-03-21 12:07                                                           ` John Darrington
2017-03-21 12:17                                                             ` ng0
2017-03-21 12:26                                                               ` John Darrington
2017-03-21 12:36                                                                 ` ng0
2017-03-21 12:38                                                                   ` ng0
2017-03-21 14:50                                                         ` [EOT] " Ricardo Wurmus
2017-03-19 16:50                               ` [PATCH 4/4] services: openssh: Add 'subsystems' option Clément Lassieur
2017-03-21  0:17                           ` Clément Lassieur
2017-02-18 15:45         ` [PATCH 2/2] services: openssh: Remove deprecated 'RSAAuthentication' option Ricardo Wurmus
2017-02-18 18:07           ` Clément Lassieur
2017-02-18 11:47     ` [PATCH 0/2] Openssh service patches Clément Lassieur

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