first commit

README.md

@@ -0,0 +1,38 @@
+Role Name
+=========
+
+A brief description of the role goes here.
+
+Requirements
+------------
+
+Any pre-requisites that may not be covered by Ansible itself or the role should be mentioned here. For instance, if the role uses the EC2 module, it may be a good idea to mention in this section that the boto package is required.
+
+Role Variables
+--------------
+
+A description of the settable variables for this role should go here, including any variables that are in defaults/main.yml, vars/main.yml, and any variables that can/should be set via parameters to the role. Any variables that are read from other roles and/or the global scope (ie. hostvars, group vars, etc.) should be mentioned here as well.
+
+Dependencies
+------------
+
+A list of other roles hosted on Galaxy should go here, plus any details in regards to parameters that may need to be set for other roles, or variables that are used from other roles.
+
+Example Playbook
+----------------
+
+Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
+
+    - hosts: servers
+      roles:
+         - { role: username.rolename, x: 42 }
+
+License
+-------
+
+BSD
+
+Author Information
+------------------
+
+An optional section for the role authors to include contact information, or a website (HTML is not allowed).

defaults/main.yml

@@ -0,0 +1,13 @@
+---
+# defaults file for ssh
+ssh_users:
+  - name: USER
+    state: present
+    keys:
+      - key: "PUBLIC KEY 1"
+      - key: "PUBLIC KEY 2"
+      - key: "PUBLIC KEY n"
+    # If set to true, the loop overwrites existing keys in authorized_keys
+    # and overwrites the keys from "keys" one after the other
+    # only the last key in the list is retained
+    exclusive: false

files/profile.d/00-bash.sh

@@ -0,0 +1,15 @@
+## custom bash changes
+# colorful bash
+force_color_prompt=yes
+export LS_OPTIONS='--color=auto'
+eval "`dircolors`"
+# aliases
+alias l='ls $LS_OPTIONS -la'
+alias ll='ls $LS_OPTIONS -l'
+alias vi='vim'
+alias docker-compose='docker compose'
+# search history with keys
+bind '"\e[A": history-search-backward'
+bind '"\e[B": history-search-forward'
+bind '"\e[5~": history-search-backward'
+bind '"\e[6~": history-search-forward'

files/vim/vimrc.local

@@ -0,0 +1,10 @@
+set nocompatible
+set ignorecase
+set hlsearch
+set showmatch
+set wrap
+set mouse-=a
+set autoindent
+syntax on
+highlight Comment ctermfg=LightCyan
+let g:skip_defaults_vim = 1

handlers/main.yml

@@ -0,0 +1,6 @@
+---
+# handlers file for ssh
+- name: Reload SSH
+  ansible.builtin.service:
+    name: sshd
+    state: reloaded

meta/main.yml

@@ -0,0 +1,52 @@
+galaxy_info:
+  author: your name
+  description: your role description
+  company: your company (optional)
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  # issue_tracker_url: http://example.com/issue/tracker
+
+  # Choose a valid license ID from https://spdx.org - some suggested licenses:
+  # - BSD-3-Clause (default)
+  # - MIT
+  # - GPL-2.0-or-later
+  # - GPL-3.0-only
+  # - Apache-2.0
+  # - CC-BY-4.0
+  license: license (GPL-2.0-or-later, MIT, etc)
+
+  min_ansible_version: 2.1
+
+  # If this a Container Enabled role, provide the minimum Ansible Container version.
+  # min_ansible_container_version:
+
+  #
+  # Provide a list of supported platforms, and for each platform a list of versions.
+  # If you don't wish to enumerate all versions for a particular platform, use 'all'.
+  # To view available platforms and versions (or releases), visit:
+  # https://galaxy.ansible.com/api/v1/platforms/
+  #
+  # platforms:
+  # - name: Fedora
+  #   versions:
+  #   - all
+  #   - 25
+  # - name: SomePlatform
+  #   versions:
+  #   - all
+  #   - 1.0
+  #   - 7
+  #   - 99.99
+
+  galaxy_tags: []
+    # List tags for your role here, one per line. A tag is a keyword that describes
+    # and categorizes the role. Users find roles by searching for tags. Be sure to
+    # remove the '[]' above, if you add tags to this list.
+    #
+    # NOTE: A tag is limited to a single word comprised of alphanumeric characters.
+    #       Maximum 20 tags per role.
+
+dependencies: []
+  # List your role dependencies here, one per line. Be sure to remove the '[]' above,
+  # if you add dependencies to this list.

tasks/main.yml

@@ -0,0 +1,66 @@
+---
+# tasks file for ssh
+- name: Add group
+  ansible.builtin.group:
+    name: "{{ ssh_item.name }}"
+    state: present
+  loop: "{{ ssh_users }}"
+  loop_control:
+    loop_var: ssh_item
+
+- name: Add user
+  ansible.builtin.user:
+    name: "{{ ssh_item.name }}"
+    group: "{{ ssh_item.name }}"
+    home: /home/{{ ssh_item.name }}
+    create_home: true
+    shell: /bin/bash
+    state: "{{ ssh_item.state }}"
+  loop: "{{ ssh_users }}"
+  loop_control:
+    loop_var: ssh_item
+
+- name: Add authorized_key
+  ansible.posix.authorized_key:
+    user: "{{ ssh_item.0.name }}"
+    key: "{{ ssh_item.1.key }}"
+    exclusive: "{{ ssh_item.0.exclusive }}"
+    state: "{{ ssh_item.0.state }}"
+  loop: "{{ ssh_users | subelements('keys') }}"
+  loop_control:
+    loop_var: ssh_item
+
+- name: Add sudoer rule for local user
+  ansible.builtin.template:
+    src: templates/10_allowed_suoders.j2
+    dest: /etc/sudoers.d/10_allowed_suoders
+    owner: root
+    group: root
+    mode: '0440'
+    validate: /usr/sbin/visudo -csf %s
+
+- name: Add hardened SSH config
+  ansible.builtin.template:
+    src: templates/00-sshd.conf.j2
+    dest: /etc/ssh/sshd_config.d/00-sshd.conf
+    owner: root
+    group: root
+    mode: '0600'
+    validate: /usr/sbin/sshd -t -f %s
+  notify: Reload SSH
+
+- name: Set bash profile
+  ansible.builtin.copy:
+    src: files/profile.d/00-bash.sh
+    dest: /etc/profile.d/00-bash.sh
+    owner: root
+    group: root
+    mode: '0644'
+
+- name: Set vim config
+  ansible.builtin.copy:
+    src: files/vim/vimrc.local
+    dest: /etc/vim/vimrc.local
+    owner: root
+    group: root
+    mode: '0644'

templates/00-sshd.conf.j2

@@ -0,0 +1,28 @@
+#jinja2: lstrip_blocks: True
+# {{ ansible_managed }}
+
+ChallengeResponseAuthentication no
+UsePAM yes
+PasswordAuthentication no
+PermitRootLogin no
+
+# Allow specific users only
+AllowUsers {% for item in ssh_users %}{{ item.name }} {% endfor %}
+
+# Sicherheit und Allgemeines
+LoginGraceTime 2m
+ClientAliveInterval 600
+StrictModes yes
+AllowTcpForwarding no
+AllowStreamLocalForwarding no
+X11Forwarding no
+
+## Ciphers (01.2024, ssh-audit and https://www.ssh.com/academy/ssh/sshd_config#cryptographic-policy)
+# Encryption algorithms (ciphers)
+Ciphers aes256-ctr,aes128-ctr,aes192-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
+# Host-key algorithms
+HostKeyAlgorithms rsa-sha2-256,rsa-sha2-512,ssh-ed25519,ssh-dss
+# Key exchange algorithms
+KexAlgorithms curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256
+# Message authentication code (MAC) algorithms
+MACs hmac-sha2-512,hmac-sha2-256

templates/10_allowed_suoders.j2

@@ -0,0 +1,6 @@
+#jinja2: lstrip_blocks: True
+# {{ ansible_managed }}
+
+{% for item in ssh_users %}
+{{ item.name }} ALL=(ALL) NOPASSWD: ALL
+{% endfor %}