Renew to wireguard

2023-09-02 17:00:09 +02:00 · 2023-09-02 17:00:09 +02:00 · baf26860e6
commit baf26860e6
parent ad72dc2817
12 changed files with 108 additions and 263 deletions
--- a/defaults/main.yml
+++ b/defaults/main.yml
@ -4,26 +4,28 @@ cloud_storage: /opt/storage
 cloud_stage: prod
 cloud_update: false

-sysctl_configs:
-  - net.ipv4.ip_forward=1
+vpn_internal_dns: 1.1.1.1

-vpn_host: "vpn.{{ domain_external | default('my-domain.tld') }}"
-vpn_protocol: "udp"
-vpn_server: "cloud-openvpn"
-vpn_cidr: 10.10.10.0
-vpn_mask: 255.255.255.0
-vpn_port: 1194
-vpn_log: /var/log/openvpn/openvpn.log
-vpn_dns:
-  - 208.67.222.222
-  - 208.67.220.220
+vpn_allow_adjacent_client_traffic: True
+vpn_keepalive: 25

-vpn_clients:
-  - name: username
-    state: present
+vpn_gateway_clientfolder: /etc/wireguard/clients
+vpn_gateway_interface: eth0
+vpn_gateway_host: my-wireguard-server.tld
+vpn_gateway_port: 51820
+vpn_gateway_net_prefix: 10.10.123
+vpn_gateway_net_cidr: 28
+vpn_gateway_public_key: your-public-key
+vpn_gateway_private_key: your-privat-key

-easy_rsa_home: "/usr/share/easy-rsa"
+vpn_gateway_forward: []
+#  - server_port: 22
+#    client_port: "{{ ssh_port }}"
+#    client_index: 0

-easy_rsa_clients:
-  - name: easyrsa_username
-    state: present
+
+vpn_clients: []
+#  - name:
+#    index: 1
+#    private_key:
+#    public_key:
--- a/handlers/main.yml
+++ b/handlers/main.yml
@ -1,9 +1 @@
 ---
- name: restart sysctl
-  command: sysctl -p
-
- name: restart openvpn
-  systemd:
-    name: openvpn@server
-    state: restarted
-    enabled: yes
--- a/meta/main.yml
+++ b/meta/main.yml
@ -1,17 +1,16 @@
 ---
 galaxy_info:
  role_name: vpn
-  namespace: hahn-cloud
+  namespace: opendevchain
  author: Lars Hahn
  company: OpenDevChain
  license: MIT
-  description: Role to setup an OpenVPN server, to make e.g. personal networks available from remote.
+  description: Role to setup a wireguard server.
  min_ansible_version: 2.7
  platforms:
    - name: Debian
      versions:
-        - 10
+        - 12
  galaxy_tags:
    - vpn
-dependencies:
-  - easy-rsa
+dependencies: []
--- a/tasks/clients.yml
+++ b/tasks/clients.yml
@ -1,57 +0,0 @@
---
- name: install client ovpn configs
-  template:
-    src: etc/openvpn/client/client.ovpn.j2
-    dest: "{{ vpn_home }}/client/{{ client }}.ovpn"
-    mode: 0600
-    owner: root
-    group: vpn
-  loop: "{{ vpn_clients_active }}"
-  loop_control:
-    loop_var: client
-    label: "{{ client }}"
-
- name: find abstent clients ovpn config
-  find:
-    paths: "{{ vpn_home }}/client/"
-    pattern: "{{ client }}.*"
-  loop: "{{ vpn_clients_passive }}"
-  loop_control:
-    loop_var: client
-    label: "{{ client }}"
-  register: absent_clients
-
- name: remove absent clients ovpn config
-  file:
-    state: absent
-    path: "{{ client }}"
-  loop: "{{ absent_clients.results | json_query('[*].files[*].path') | flatten }}"
-  loop_control:
-    loop_var: client
-    label: "{{ client | basename }}"
-  when: absent_clients.results | length > 0
-
- name: setup OpenVPN config folder for each vpn client
-  file:
-    state: directory
-    path: "/home/{{ user }}/.openvpn"
-    mode: 0700
-    owner: "{{ user }}"
-    group: "{{ user }}"
-  loop: "{{ vpn_clients_active | map('regex_replace','\\.[^\\.]+$','') | list | unique }}"
-  loop_control:
-    loop_var: user
-    label: "{{ user }}"
-
- name: rollout .ovpn single-file config for active clients
-  copy:
-    src: "{{ vpn_home }}/client/{{ client }}.ovpn"
-    dest: "/home/{{ client.split('.')[0] }}/.openvpn/"
-    mode: 0400
-    owner: "{{ client.split('.')[0] }}"
-    group: "{{ client.split('.')[0] }}"
-  loop: "{{ vpn_clients_active }}"
-  loop_control:
-    loop_var: client
-    label: "{{ client }}"
-  
--- a/tasks/main.yml
+++ b/tasks/main.yml
@ -1,32 +1,53 @@
 ---
- name: install openvpn and recommendations
+- name: install fail2ban service
  apt:
    update_cache: yes
    state: "{% if cloud_update | bool %}latest{% else %}present{% endif %}"
    install_recommends: yes
-    pkg:
-      - "openvpn"
+    pkg: wireguard
+  register: wireguard_installed

- name: setup sysctl config for openvpn
-  lineinfile:
-    path: "{{ sysctl_conf }}"
-    regexp: '^#?{{ configline.split("=")[0] }}='
-    line: "{{ configline }}"
-    backrefs: yes
+- name: setup key files
+  template:
+    src: "etc/wireguard/{{ item }}.j2"
+    dest: "/etc/wireguard/{{ item }}"
    owner: root
-    group: root
-    mode: 0644
-  loop: "{{ sysctl_configs }}"
-  loop_control:
-    loop_var: configline
-    label: "{{ configline }}"
-  notify: restart sysctl
+    mode: 0600
+  loop:
+    - private.key
+    - public.key
+  notify: restart wireguard service

-# run in a block only when for every vpn_client user there is a certificate
-# otherwise ignore ...
-# It is better to have a matching config (dependency currently only to vpn)
-# then to catch spectacular cases.
- block:
-  - include_tasks: server.yml
-  - include_tasks: clients.yml
-  when: vpn_clients | difference(easy_rsa_clients) | length == 0
+- name: setup wireguard config
+  template:
+    src: "etc/wireguard/wireguard.conf.j2"
+    dest: "/etc/wireguard/{{ cloud_name }}.conf"
+    owner: root
+    mode: 0600
+  notify: restart wireguard service
+
+- name: setup client folder
+  file:
+    state: directory
+    mode: 0600
+    owner: root
+    path: "{{ vpn_gateway_clientfolder }}"
+
+- name: setup client configs
+  template:
+    src: "etc/wireguard/clients/wireguard-client.conf.j2"
+    dest: "{{ vpn_gateway_clientfolder }}/{{ vpn_client.name }}.conf"
+    owner: root
+    mode: 0600
+  loop: "{{ vpn_clients }}"
+  loop_control:
+    loop_var: vpn_client
+    label: "{{ vpn_client.name }}"
+
+
+- name: enable wireguard systemd unit
+  systemd:
+    name: wg-quick@{{ cloud_name }}
+    enabled: yes
+    daemon_reload: yes
+    state: started
--- a/tasks/server.yml
+++ b/tasks/server.yml
@ -1,78 +0,0 @@
---
- name: find installed openvpn clients
-  find:
-    paths: "{{ vpn_home }}/client/"
-    patterns: "*.crt"
-  register: easyrsa_key_file
-
-#- name: Setup default OpenVPN configuration
-#  shell: 
-#    cmd: "gunzip -c {{ vpn_doc_examples }}/server.conf.gz > {{ vpn_home }}/server.conf"
-#    creates: "{{ vpn_home }}/server.conf"
-
- name: Setup default OpenVPN configuration
-  copy: 
-    src: "{{ vpn_doc_examples }}/server.conf"
-    dest: "{{ vpn_home }}/server.conf"
-    owner: root
-    group: root
-    force: no
-
- name: find server TLS-Auth key
-  find:
-    paths: "{{ vpn_home }}/server/"
-    patterns: "ta.key"
-  register: tlsauth_key_files
-
- name: generate TLS-Auth key
-  command: "openvpn --genkey --secret {{ vpn_tlsauth_key_file }}"
-  when: tlsauth_key_files.matched == 0
-
- name: install easy-rsa CA and server certs
-  copy:
-    src: "{{ easy_rsa_home }}/pki/{{ item }}"
-    dest: "{{ vpn_home }}/server/"
-    mode: 0600
-    owner: root
-    group: root
-  loop:
-    - "ca.crt"
-    - "dh.pem"
-    - "private/{{ vpn_server }}.key"
-    - "issued/{{ vpn_server }}.crt"
-
- name: setup OpenVPN configuration
-  lineinfile:
-    path: "{{ vpn_home }}/server.conf"
-    regexp: '^;?{{ configline.split(" ")[0] }}{% if configline.split(" ") | length > 1 %} {% endif %}'
-    line: "{{ configline }}"
-    owner: root
-    group: root
-    mode: 0644
-  loop: "{{ vpn_server_conf }}"
-  loop_control:
-    loop_var: configline
-    label: "{{ configline }}"
-  notify: restart openvpn
-
- name: off-setup OpenVPN configuration
-  lineinfile:
-    path: "{{ vpn_home }}/server.conf"
-    regexp: '^{{ configline.split(" ")[0] }}{% if configline.split(" ") | length > 1 %} {% endif %}'
-    line: ";{{ configline }}"
-    backrefs: yes
-    owner: root
-    group: root
-    mode: 0644
-  loop: "{{ vpn_server_conf_off }}"
-  loop_control:
-    loop_var: configline
-    label: ";{{ configline }}"
-  notify: restart openvpn
-
- name: enable openvpn@server systemd unit
-  systemd:
-    name: openvpn@server
-    enabled: yes
-    daemon_reload: yes
-    state: started
--- a/templates/etc/openvpn/client/client.ovpn.j2
+++ b/templates/etc/openvpn/client/client.ovpn.j2
@ -1,29 +0,0 @@
-client
-dev tun
-proto {{ vpn_protocol }}
-remote {{ vpn_host }} {{ vpn_port }}
-remote-cert-tls server
-key-direction 1
-cipher AES-256-CBC
-auth SHA512
-auth-nocache
-tls-version-min 1.2
-tls-cipher TLS-DHE-RSA-WITH-AES-256-GCM-SHA384:TLS-DHE-RSA-WITH-AES-256-CBC-SHA256:TLS-DHE-RSA-WITH-AES-128-GCM-SHA256:TLS-DHE-RSA-WITH-AES-128-CBC-SHA256
-comp-lzo
-nobind
-persist-key
-persist-tun
-mute-replay-warnings
-verb 3
-<ca>
-{{ lookup("file", easy_rsa_home + "/pki/ca.crt") }}
-</ca>
-<cert>
-{{ lookup("file", easy_rsa_home + "/pki/issued/" + client + ".crt") }}
-</cert>
-<key>
-{{ lookup("file", easy_rsa_home + "/pki/private/" + client + ".key") }}
-</key>
-<tls-auth>
-{{ lookup("file", vpn_tlsauth_key_file) }}
-</tls-auth>
--- a/templates/etc/wireguard/clients/wireguard-client.conf.j2
+++ b/templates/etc/wireguard/clients/wireguard-client.conf.j2
@ -0,0 +1,11 @@
+[Interface]
+Address = {{ vpn_gateway_net_prefix }}.{{ vpn_client.index }}/32
+PrivateKey = {{ vpn_client.private_key }}
+DNS = {{ vpn_internal_dns }}
+
+[Peer]
+PublicKey = {{ vpn_gateway_public_key }}
+Endpoint = {{ vpn_gateway_host }}:{{ vpn_gateway_port }}
+AllowedIPs = {{ vpn_gateway_net_prefix }}.1/{% if vpn_allow_adjacent_client_traffic %}{{ vpn_gateway_net_cidr }}{% else %}32{% endif %}
+
+PersistentKeepalive = {{ vpn_keepalive }}
--- a/templates/etc/wireguard/private.key.j2
+++ b/templates/etc/wireguard/private.key.j2
@ -0,0 +1 @@
+{{ vpn_gateway_private_key }}
--- a/templates/etc/wireguard/public.key.j2
+++ b/templates/etc/wireguard/public.key.j2
@ -0,0 +1 @@
+{{ vpn_gateway_public_key }}
--- a/templates/etc/wireguard/wireguard.conf.j2
+++ b/templates/etc/wireguard/wireguard.conf.j2
@ -0,0 +1,25 @@
+[Interface]
+Address = {{ vpn_gateway_net_prefix }}.1/{{ vpn_gateway_net_cidr }}
+ListenPort = {{ vpn_gateway_port }}
+PrivateKey = {{ vpn_gateway_private_key }}
+
+{% if vpn_gateway_forward is defined and vpn_gateway_forward | length > 0 %}
+PreUp = sysctl -w net.ipv4.ip_forward=1
+PreUp = sysctl -w net.ipv6.conf.all.forwarding=1
+
+{% for config in vpn_gateway_forward %}
+PreUp = iptables -t nat -A PREROUTING -i {{ vpn_gateway_interface }} -p {{ config.protocol | default('tcp') }} --dport {{ config.server_port }} -j DNAT --to-destination {{ vpn_gateway_net_prefix }}.{{ config.client_index }}:{{ config.client_port }}
+PostDown = iptables -t nat -D PREROUTING -i {{ vpn_gateway_interface }} -p {{ config.protocol | default('tcp') }} --dport {{ config.server_port }} -j DNAT --to-destination {{ vpn_gateway_net_prefix }}.{{ config.client_index }}:{{ config.client_port }}
+
+{% endfor %}
+PreUp = iptables -t nat -A POSTROUTING -o {{ cloud_name }} -j MASQUERADE
+PostDown = iptables -t nat -D POSTROUTING -o {{ cloud_name }} -j MASQUERADE
+{% endif %}
+
+{% for client in vpn_clients %}
+## vpn {{ cloud_name }} - {{ client }} ##
+[Peer]
+PublicKey = {{ vpn_clients[client].public_key }}
+AllowedIPs = {{ vpn_gateway_net_prefix }}.{{ vpn_clients[client].index }}/32
+
+{% endfor %}
--- a/vars/main.yml
+++ b/vars/main.yml
@ -1,43 +0,0 @@
---
-sysctl_path: "/etc/"
-sysctl_conf: "{{ sysctl_path }}/sysctl.conf"
-
-vpn_doc_examples: /usr/share/doc/openvpn/examples/sample-config-files/
-
-vpn_home: "/etc/openvpn"
-
-vpn_clients_active: "{{ vpn_clients | json_query('[?state==`present`].name') }}"
-vpn_clients_passive: "{{ vpn_clients | json_query('[?state!=`present`].name') }}"
-
-vpn_tlsauth_key: ta.key
-vpn_tlsauth_key_file: "{{ vpn_home }}/server/{{ vpn_tlsauth_key }}"
-
-vpn_server_conf:
-  - "port {{ vpn_port }}"
-  - "proto {{ vpn_protocol }}"
-  - dev tun
-  - "ca {{ vpn_home }}/server/ca.crt"
-  - "cert {{ vpn_home }}/server/{{ vpn_server }}.crt"
-  - "key {{ vpn_home }}/server/{{ vpn_server }}.key"
-  - "dh {{ vpn_home }}/server/dh.pem"
-  - topology subnet
-  - "server {{ vpn_cidr }} {{ vpn_mask }}"
-  - cipher AES-256-CBC
-  - "tls-auth {{ vpn_home }}/server/ta.key 0"
-  - tls-version-min 1.2
-  - tls-cipher TLS-DHE-RSA-WITH-AES-256-GCM-SHA384:TLS-DHE-RSA-WITH-AES-256-CBC-SHA256:TLS-DHE-RSA-WITH-AES-128-GCM-SHA256:TLS-DHE-RSA-WITH-AES-128-CBC-SHA256
-  - auth SHA512
-  - auth-nocache
-  - keepalive 20 60
-  - persist-key
-  - persist-tun
-  - client-to-client
-  - comp-lzo
-  - user nobody
-  - group nogroup
-  - "log-append {{ vpn_log }}"
-  - verb 3
-
-vpn_server_conf_off:
-  - explicit-exit-notify 1
-