OpenSSH hardened configuration
==============================

Purpose
-------

This repository contains an hardened version of the default OpenSSH client and server configuration, disabling broken ciphers and unsafe authentication methods.


Installation
------------

- `groupadd ssh-user` and `usermod -a -G ssh-user <username>` for each user allowed to use SSH.
- Deploy user public keys before continuing
- Clone this repo into `/etc/ssh/`
- Uncomment `KexDHMin 4096` in `ssh{,d}_config` if supported by the installed OpenSSH
- Regenerate `ssh_host_rsa_key{,.pub}` of length 4096 if lower


References
----------

- [Secure Secure Shell](https://stribika.github.io/2015/01/04/secure-secure-shell.html)