misc: WIP: vpn

group_vars/all/ifupdown2.yml

@@ -7,9 +7,9 @@ ifupdown2__gateways:
   int:
     - 2a09:6840:206::1
     - 10.206.0.1
-  pub:
-    - 2a09:6840:111::254
-    - 45.66.111.254
+  ext:
+    - 2a09:6840:211::1
+    - 10.211.0.1
   monit:
     - 2a09:6840:204::1
     - 10.204.0.1

group_vars/infra/bird.yml

@@ -57,4 +57,28 @@ bird__bgp:
       - pref_src: "{{ bird__pref_src_addr }}"
       - accept
     export: reject
+  wg1:
+    local:
+      address: "{{ bird__bgp_addr.vpn }}"
+      as: "{{ bird__as.aurore }}"
+    neighbor:
+      address:
+        - 2a09:6840:213::1:3
+        - 10.213.1.3
+      as: "{{ bird__as.aurore }}"
+    rr_cluster_client: 10.203.1.1
+    import: reject
+    export: accept
+  wg2:
+    local:
+      address: "{{ bird__bgp_addr.vpn }}"
+      as: "{{ bird__as.aurore }}"
+    neighbor:
+      address:
+        - 2a09:6840:213::1:4
+        - 10.203.1.4
+      as: "{{ bird__as.aurore }}"
+    rr_cluster_client: 10.203.1.1
+    import: reject
+    export: accept
 ...

group_vars/infra/firewall.yml

@@ -104,7 +104,13 @@ firewall__zones:
       - 10.128.0.150
 
 firewall__input:
-  - src: back
+  - iif:
+      - back0 # FIXME link-local
+      - vpn0
+    verdict: accept
+  - src:
+      - back
+      - vpn
     verdict: accept
   - src: monit
     protocols:

group_vars/vpn/bird.yml

@@ -0,0 +1,58 @@
+---
+bird__kernel:
+  kernel:
+    learn: true
+    import: accept
+    export: accept
+  vrf:
+    import: reject
+    export: accept
+    table: wg
+    kernel: "{{ iproute2__custom_protos.wireguard }}"
+
+bird__ospf:
+  limits:
+    import: 4000
+    export: 4000
+  table: wg
+  import: accept
+  export:
+    protos:
+      - kernel
+      - wireguard
+  areas:
+    1:
+      broadcast:
+        - vpn0
+
+bird__tables:
+  - wg
+
+bird__bgp:
+  infra1:
+    local:
+      address: "{{ bird__bgp_addr.vpn }}"
+      as: "{{ bird__as.aurore }}"
+    neighbor:
+      address:
+        - 2a09:6840:213::1:1
+        - 10.213.1.1
+      as: "{{ bird__as.aurore }}"
+    table: wg
+    import: accept
+    export: reject
+    next_hop_self: true
+  infra2:
+    local:
+      address: "{{ bird__bgp_addr.vpn }}"
+      as: "{{ bird__as.aurore }}"
+    neighbor:
+      address:
+        - 2a09:6840:213::1:2
+        - 10.213.1.2
+      as: "{{ bird__as.aurore }}"
+    table: wg
+    import: accept
+    export: reject
+    next_hop_self: true
+...

group_vars/vpn/ifupdown2.yml

@@ -1,24 +1,15 @@
 ---
+ifupdown2__vrf:
+  wg-vrf:
+    table: "{{ iproute2__custom_tables.wireguard }}"
+
 ifupdown2__wireguard:
   wg0:
     private_key: "{{ vault_wireguard_wg0_private }}"
     listen_port: 5121
-    goto_table: bird
+    vrf: wg-vrf
     peer_allowed_addresses:
       - 2a09:6840:212::1:1/128
       - 10.212.1.1/32
     peer_public_key: 0kP/XjaGOpu4p9KHTAoAhkLwXzC8wJUdPIdhdpgeKhY=
-
-ifupdown2__interfaces:
-  adm0:
-    addresses:
-      - 2a09:6840:128::10:11/64
-      - 10.128.10.11/16
-  ext0:
-    addresses:
-      - 45.66.111.200/30
-  vpn0:
-    addresses:
-      - 2a09:6840:213::1:3/64
-      - 10.213.1.3/16
 ...

group_vars/vpn/iproute2.yml

@@ -0,0 +1,7 @@
+---
+iproute2__custom_tables:
+  wireguard: 2000
+
+iproute2__custom_protos:
+  wireguard: 2000
+...

host_vars/infra-1.back.infra.auro.re.yml

@@ -38,8 +38,8 @@ ifupdown2__interfaces:
     ipv6_addrgen: false
   vpn0:
     addresses:
-      - 2a09:6840:213::1:1
-      - 10.213.1.1
+      - 2a09:6840:213::1:1/64
+      - 10.213.1.1/16
 
 bird__router_id: 10.203.1.3
 
@@ -47,6 +47,9 @@ bird__bgp_addr:
   back:
     - 2a09:6840:203::1:3
     - 10.203.1.3
+  vpn:
+    - 2a09:6840:213::1:1
+    - 10.213.1.1
 
 bird__pref_src_addr:
   - 2a09:6840:203::1:3

host_vars/infra-2.back.infra.auro.re.yml

@@ -38,8 +38,8 @@ ifupdown2__interfaces:
     ipv6_addrgen: false
   vpn0:
     addresses:
-      - 2a09:6840:213::1:2
-      - 10.213.1.2
+      - 2a09:6840:213::1:2/64
+      - 10.213.1.2/16
 
 bird__router_id: 10.203.1.4
 
@@ -47,6 +47,9 @@ bird__bgp_addr:
   back:
     - 2a09:6840:203::1:4
     - 10.203.1.4
+  vpn:
+    - 2a09:6840:213:1:2
+    - 10.213.1.2
 
 bird__pref_src_addr:
   - 2a09:6840:203::1:4

host_vars/ns-master.int.infra.auro.re/knotd.yml

@@ -363,12 +363,12 @@ knotd__zones:
       dns-2.int:
         - 2a09:6840:206::1:2
         - 10.206.1.2
-      vpn-1.back:
-        - 10.128.10.11
-        - 2a09:6840:128::10:11
-      vpn-2.back:
-        - 10.128.10.111
-        - 2a09:6840:128::10:111
+      wg-1.vpn:
+        - 2a09:6840:213::1:3
+        - 10.213.1.3
+      wg-2.vpn:
+        - 2a09:6840:213::1:4
+        - 10.213.1.4
       infra-1.back:
         - 2a09:6840:203::1:3
         - 10.203.1.3

host_vars/wg-1.vpn.infra.auro.re.yml

@@ -0,0 +1,24 @@
+---
+systemd_link__links:
+  vpn0: 02:00:00:b5:ca:c7
+  ext0: 02:00:00:e3:65:49
+
+ifupdown2__interfaces:
+  ext0:
+    gateways: "{{ ifupdown2__gateways.ext }}"
+    addresses:
+      - 2a09:6840:211::1:1/64
+      - 10.211.1.1/16
+      - 45.66.111.200/30
+  vpn0:
+    addresses:
+      - 2a09:6840:213::1:3/64
+      - 10.213.1.3/16
+
+bird__router_id: 10.213.1.3
+
+bird__bgp_addr:
+  vpn:
+    - 2a09:6840:213::1:3
+    - 10.213.1.3
+...

hosts

@@ -19,7 +19,7 @@ eb-1.ups.infra.auro.re
 ec-1.ups.infra.auro.re
 
 [vpn]
-#vpn-[1:2].back.infra.auro.re
+wg-[1:2].vpn.infra.auro.re
 
 [dns]
 dns-[1:2].int.infra.auro.re
@@ -54,17 +54,17 @@ ntp-[1:2].int.infra.auro.re
 [radius]
 radius-[1:2].isp.infra.auro.re
 
-[vm_network]
-#vpn-[1:2].back.infra.auro.re
-edge-[1:2].back.infra.auro.re
-dhcp-[1:2].isp.infra.auro.re
-dns-[1:2].int.infra.auro.re
-radius-[1:2].isp.infra.auro.re
-ntp-[1:2].int.infra.auro.re
-#ldap-[1:2].int.infra.auro.re
-isp-[1:2].back.infra.auro.re
-infra-[1:2].back.infra.auro.re
-prometheus-[1:2].monit.infra.auro.re
+[vm_network:children]
+vpn
+edge
+dhcp
+dns
+radius
+ntp
+#ldap
+isp
+infra
+prom
 
 [pve:children]
 pve_network

playbooks/bird.yml

@@ -3,6 +3,7 @@
 - hosts:
     - infra
     - isp
+    - vpn
   roles:
     - bird
 

playbooks/iproute2.yml

@@ -1,17 +1,10 @@
 #!/usr/bin/env ansible-playbook
 ---
 - hosts:
-    - edge-1.back.infra.auro.re
-    - edge-2.back.infra.auro.re
-    - isp-1.back.infra.auro.re
-    - isp-2.back.infra.auro.re
-    - infra-1.back.infra.auro.re
-    - infra-2.back.infra.auro.re
-    - vpn-1.back.infra.auro.re
-    - vpn-2.back.infra.auro.re
-  vars:
-    iproute2__custom_tables:
-      bird: 100
+    - edge
+    - isp
+    - infra
+    - vpn
   roles:
     - iproute2
 ...

playbooks/systemd_link.yml

@@ -11,12 +11,6 @@
     - ldap
     - isp
     - vpn
-  vars:
-    systemd_link__hosts:
-      vpn-1.back.infra.auro.re:
-        adm0: 02:00:00:3b:74:20
-        vpn0: 02:00:00:b5:ca:c7
-        pub0: 02:00:00:e3:65:49
   roles:
     - systemd_link
 ...

roles/bird/defaults/main.yml

@@ -1,7 +1,7 @@
 ---
-bird__ospf_stub_interfaces: []
-bird__ospf_stub_networks: []
-bird__ospf_broadcast_interfaces: {}
+bird__kernel: {}
+bird__pipes: {}
+bird__tables: {}
 bird__ospf_hello: 2
 bird__ospf_retransmit: 5
 bird__ospf_wait: 10
@@ -10,5 +10,5 @@ bird__radv_interfaces: {}
 bird__radv_dns_servers: []
 bird__radv_max_interval: 5
 bird__static_unreachable: []
-bird__bgp_sessions: []
+bird__bgp_sessions: {}
 ...

roles/bird/filter_plugins/bird.py

@@ -135,7 +135,7 @@ def str_of_condition(condition: Condition, ctx: bool) -> str:
 
         case Proto(protos=protos):
             protos = [quoted(bird_name(p, ctx.ipv4)) for p in protos]
-            return f"proto ~ [ {', '.join(protos)} ]"
+            return " || ".join(f"proto = {p}" for p in protos)
 
         case Source(sources=[source]):
             return f"krt_source = {source}"

roles/bird/templates/bird.conf.j2

@@ -1,9 +1,26 @@
 {{ ansible_managed | comment }}
 
+{% macro import_export(obj, ipv4) %}
+{{ obj.import | default([]) | bird_import(ipv4) }}
+{% if obj.limits.import is defined %}
+import limit {{ obj.limits.import }};
+{% endif %}
+{{ obj.export | default([]) | bird_export(ipv4) }}
+{% if obj.limits.export is defined %}
+export limit {{ obj.limits.export }};
+{% endif %}
+{% endmacro %}
+
 log syslog all;
 
 router id {{ bird__router_id }};
 
+{% for table in bird__tables %}
+{% for version in ["ipv4", "ipv6"] %}
+{{ version }} table {{ table | bird_name(version == "ipv4") }};
+{% endfor %}
+{% endfor %}
+
 protocol device {
     scan time 10;
 }
@@ -22,45 +39,36 @@ protocol kernel {{ name | bird_name(ipv4) }} {
     persist;
 {% endif %}
     {{ version }} {
-        {{ kernel.import
-           | default([])
-           | bird_import(ipv4)
-           | indent(8) }}
-{% if kernel.limits.import is defined %}
-        import limit {{ kernel.limits.import }};
-{% endif %}
-        {{ kernel.export
-           | default([])
-           | bird_export(ipv4)
-           | indent(8) }}
-{% if kernel.limits.export is defined %}
-        export limit {{ kernel.limits.export }};
+{% if kernel.table is defined %}
+        table {{ kernel.table | bird_name(ipv4) }};
 {% endif %}
+        {{ import_export(kernel, ipv4) | indent(8) }}
     };
 }
 {% endfor %}
 {% endfor %}
 
+{% for name, pipe in bird__pipes.items() %}
+{% for version in ["ipv4", "ipv6"] %}
+{% set ipv4 = version == "ipv4" %}
+protocol pipe {{ name | bird_name(ipv4) }} {
+    table {{ pipe.table | bird_name(ipv4) }};
+    peer_table {{ pipe.peer_table | bird_name(ipv4) }};
+    {{ import_export(kernel, ipv4) | indent(8) }}
+}
+{% endfor %}
+{% endfor %}
+
 {% if bird__ospf is defined %}
 {% for version in ["ipv4", "ipv6"] %}
 {% set ipv4 = version == "ipv4" %}
 {% set ospf_version = "v2" if ipv4 else "v3" %}
 protocol ospf {{ ospf_version }} {{ "ospf" | bird_name(ipv4) }} {
     {{ version }} {
-        {{ bird__ospf.import
-           | default([])
-           | bird_import(ipv4)
-           | indent(8) }}
-{% if bird__ospf.limits.import is defined %}
-        import limit {{ bird__ospf.limits.import }};
-{% endif %}
-        {{ bird__ospf.export
-           | default([])
-           | bird_export(ipv4)
-           | indent(8) }}
-{% if bird__ospf.limits.export is defined %}
-        export limit {{ bird__ospf.limits.export }};
+{% if bird__ospf.table is defined %}
+        table {{ bird__ospf.table | bird_name(ipv4) }};
 {% endif %}
+        {{ import_export(bird__ospf, ipv4) | indent(8) }}
     };
 {% for id, area in bird__ospf.areas.items() %}
     area {{ id }} {
@@ -97,20 +105,13 @@ protocol bgp {{ name | bird_name(ipv4) }} {
     rr cluster id {{ bgp.rr_cluster_client }};
 {% endif %}
     {{ version }} {
-        {{ bgp.import
-           | default([])
-           | bird_import(ipv4)
-           | indent(8) }}
-{% if bgp.limits.import is defined %}
-        import limit {{ bgp.limits.import }};
+{% if bgp.table is defined %}
+        table {{ bgp.table | bird_name(ipv4) }};
 {% endif %}
-        {{ bgp.export
-           | default([])
-           | bird_export(ipv4)
-           | indent(8) }}
-{% if bgp.limits.export is defined %}
-        export limit {{ bgp.limits.export }};
+{% if bgp.next_hop_self is defined %}
+        next hop self;
 {% endif %}
+        {{ import_export(bgp, ipv4) | indent(8) }}
     };
 }
 {% endfor %}

roles/firewall/files/firewall

@@ -155,8 +155,8 @@ class Protocols(RestrictiveBaseModel):
 
 
 class Rule(RestrictiveBaseModel):
-    iif: str | None
-    oif: str | None
+    iif: AutoSet[str] | None
+    oif: AutoSet[str] | None
     protocols: Protocols = Protocols()
     src: AutoSet[IPvAnyNetwork | ZoneName] | None
     dst: AutoSet[IPvAnyNetwork | ZoneName] | None

roles/ifupdown2/defaults/main.yml

@@ -1,6 +1,7 @@
 ---
 ifupdown2__interfaces: {}
 ifupdown2__wireguard: {}
+ifupdown2__vrf: {}
 ifupdown2__wireguard_keepalive: 0
 ifupdown2__wireguard_proto: boot
 ifupdown2__prio_base: 100

roles/ifupdown2/templates/interfaces.j2

@@ -21,6 +21,9 @@ pre-up ip rule add prio {{ prio + 1 }} iif $IFACE blackhole
 post-down ip rule del prio {{ prio }} iif $IFACE table {{ iface.goto_table }}
 post-down ip rule del prio {{ prio + 1 }} iif $IFACE blackhole
 {% endif %}
+{% if iface.vrf is defined %}
+vrf {{ iface.vrf }}
+{% endif %}
 {% if iface.ipv6_addrgen is defined %}
 ipv6-addrgen {{ iface.ipv6_addrgen
                 | ternary("yes", "no") }}
@@ -63,5 +66,11 @@ iface {{ name }}
 {% for address in iface.peer_allowed_addresses | default([]) %}
     post-up ip route add {{ address }} proto {{ ifupdown2__wireguard_proto }} dev $IFACE
 {% endfor %}
-
+{% endfor %}
+
+{% for name, iface in ifupdown2__vrf.items() | sort(attribute="0") %}
+auto {{ name }}
+iface {{ name }}
+    {{ iface_common(iface, index=loop.index) | indent(4) }}
+    vrf-table {{ iface.table }}
 {% endfor %}

roles/iproute2/defaults/main.yml

@@ -1,8 +1,4 @@
 ---
-iproute2__default_tables:
-  local: 255
-  main: 254
-  default: 253
-  unspec: 0
 iproute2__custom_tables: {}
+iproute2__custom_protos: {}
 ...

roles/iproute2/tasks/main.yml

@@ -1,17 +1,12 @@
 ---
-- name: Ensure that default and custom tables names don't overlap
-  assert:
-    that: "not (iproute2__default_tables.keys()
-                | intersect(iproute2__custom_tables.keys()))"
-
-- name: Configure rt_tables
+- name: Configure custom tables and protos
   template:
-    src: rt_tables.j2
-    dest: /etc/iproute2/rt_tables
+    src: "{{ item }}.j2"
+    dest: "/etc/iproute2/{{ item }}.d/custom.conf"
     owner: root
     group: root
     mode: u=rw,g=r,o=r
-  vars:
-    iproute2__tables: "{{ iproute2__default_tables
-                          | combine(iproute2__custom_tables) }}"
+  loop:
+    - rt_tables
+    - rt_protos
 ...

roles/iproute2/templates/rt_protos.j2

@@ -0,0 +1,5 @@
+{{ ansible_managed | comment }}
+
+{% for name, id in iproute2__custom_protos.items() %}
+{{ id }} {{ name }}
+{% endfor %}

roles/iproute2/templates/rt_tables.j2

@@ -1,5 +1,5 @@
 {{ ansible_managed | comment }}
 
-{% for name, id in iproute2__tables.items() %}
+{% for name, id in iproute2__custom_tables.items() %}
 {{ id }} {{ name }}
 {% endfor %}