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OpenSSH Server
==============

This role configures the OpenSSH daemon. It:

* By default configures the SSH daemon with the normal OS defaults.
* Works across a variety of UN*X like distributions
* Can be configured by dict or simple variables
* Supports Match sets
* Supports all sshd_config options. Templates are programmatically generated.
  (see [meta/make_option_list](meta/make_option_list))
* Tests the sshd_config before reloading sshd.

**WARNING** Misconfiguration of this role can lock you out of your server!
Please test your configuration and its interaction with your users configuration
before using in production!

**WARNING** Digital Ocean allows root with passwords via SSH on Debian and
Ubuntu. This is not the default assigned by this module - it will set
`PermitRootLogin without-password` which will allow access via SSH key but not
via simple password. If you need this functionality, be sure to set
`ssh_PermitRootLogin yes` for those hosts.

Requirements
------------

Tested on:

* Ubuntu precise, trusty
* Debian wheezy, jessie
* FreeBSD 10.1
* EL 6,7 derived distributions

It will likely work on other flavours and more direct support via suitable
[vars/](vars/) files is welcome.

Role variables
---------------

Unconfigured, this role will provide a sshd_config that matches the OS default,
minus the comments and in a different order.

* sshd_skip_defaults

If set to True, don't apply default values. This means that you must have a
complete set of configuration defaults via either the sshd dict, or sshd_Key
variables. Defaults to *False*.

* sshd_allow_reload

If set to False, a reload of sshd wont happen on change. This can help with
troubleshooting. You'll need to manually reload sshd if you want to apply the
changed configuration. Defaults to *True*.

* sshd

A dict containing configuration.  e.g.

```yaml
sshd:
  Compression: delayed
  ListenAddress:
    - 0.0.0.0
```

* ssh_...

Simple variables can be used rather than a dict. Simple values override dict
values. e.g.:

```yaml
sshd_Compression: off
```

In all cases, booleans correctly rendered as yes and no in sshd configuration.
Lists can be used for multiline configuration items. e.g.

```yaml
sshd_ListenAddress:
  - 0.0.0.0
  - '::'
```

Renders as:

```
ListenAddress 0.0.0.0
ListenAddress ::
```

* sshd_match

A list of dicts for a match section. See the example playbook.

* sshd_match_1 through sshd_match_9

A list of dicts or just a dict for a Match section.

Dependencies
------------

- willshersystems.apt

Example Playbook
----------------
 
```yaml
---
- hosts: all
  vars:
    sshd_skip_defaults: true
    sshd:
      Compression: true
      ListenAddress:
        - "0.0.0.0"
        - "::"
      GSSAPIAuthentication: no
      Match:
        - Condition: "Group user"
          GSSAPIAuthentication: yes
    sshd_UsePrivilegeSeparation: sandbox
    sshd_match:
        - Condition: "Group xusers"
          X11Forwarding: yes
  roles:
    - role: willshersystems.sshd
```

Results in:

```
# Ansible managed: ...
Compression yes
GSSAPIAuthentication no
UsePrivilegeSeparation sandbox
Match Group user
  GSSAPIAuthentication yes
Match Group xusers
  X11Forwarding yes
```

License
-------

LGPLv3


Author
------

Matt Willsher <matt@willsher.systems>

&copy; 2014,2015 Willsher Systems