WIP: new z9 ccchh router #98

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bitwhisker wants to merge 3 commits from new_ccchh_router into main
21 changed files with 627 additions and 0 deletions
Showing only changes of commit 50cf34e3f3 - Show all commits

rt1(z9 host): create host and configure networkd and nftables

bitwhisker 2026-05-23 23:46:00 +02:00
Signed by: bitwhisker
SSH key fingerprint: SHA256:KybIk/tusSKao6eLGY+ILlFa1rCrzwx66/acBAcKUqE

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@ -0,0 +1,6 @@
systemd_networkd__config_dir: 'resources/z9/rt1/systemd_networkd/'
systemd_networkd__global_config: "{{ lookup('ansible.builtin.file', 'resources/z9/rt1/systemd_networkd_global_config.conf') }}"
nftables__config: "{{ lookup('ansible.builtin.file', 'resources/z9/rt1/nftables/nftables.conf') }}"
ansible_pull__timer_on_calendar: "*-*-* 04:00:00 Europe/Berlin"
ansible_pull__timer_randomized_delay_sec: 0min
unbound_access_control: [ "10.89.208.0/20" ]

View file

@ -14,6 +14,9 @@ all:
yate:
ansible_host: yate.ccchh.net
ansible_user: chaos
rt1:

It's fine, just feel like rt1 is one of those obscure names again, which gives more trouble than benefit.

It's fine, just feel like `rt1` is one of those obscure names again, which gives more trouble than benefit.

do you have an idea/a proposal for a better name?
maybe z9-router or something like that?
I would say it would not be a good idea to name it just router,
because of the indirect name collision with the chaosknoten router.

do you have an idea/a proposal for a better name? maybe z9-router or something like that? I would say it would not be a good idea to name it just router, because of the indirect name collision with the chaosknoten router.

Oh, that totally makes sense. I'm fine with the name, if others really like it, but personally I would prefer something like z9-router indeed.

Oh, that totally makes sense. I'm fine with the name, if others really like it, but personally I would prefer something like `z9-router` indeed.
ansible_host: rt1.ccchh.net
ansible_user: chaos
certbot_hosts:
hosts:
dooris:
@ -35,6 +38,7 @@ infrastructure_authorized_keys_hosts:
light:
waybackproxy:
yate:
rt1:
nginx_hosts:
hosts:
dooris:
@ -46,6 +50,12 @@ ola_hosts:
proxmox_vm_template_hosts:
hosts:
thinkcccore0:
systemd_networkd_hosts:

If we configure ansible-pull variables above, the host should also be added to the relevant host group. (However an ansible-pull age private key is still missing.)

If we configure ansible-pull variables above, the host should also be added to the relevant host group. (However an ansible-pull age private key is still missing.)
hosts:
rt1:
nftables_hosts:
hosts:
rt1:
alloy_hosts:
hosts:
light:
@ -59,3 +69,4 @@ ansible_pull_hosts:
yate:
secrets_hosts:
hosts:
rt1:

View file

@ -0,0 +1,111 @@
#!/usr/sbin/nft -f
## Variables
# Hosts
# Interfaces
define if_netwan = "netwan"
define if_netlan = "netlan"
define if_wg55_management = "wg55"
define if_netwan_400_fux_uplink = "netwan.400"
define if_netlan_51_clients = "netlan.51"
define if_netlan_52_iot = "netlan.52"
define if_netlan_53_public = "netlan.53"
define if_netlan_54_management = "netlan.54"
# Interface Groups
define wan_ifs = { $if_netwan_400_fux_uplink }
define lan_ifs = { $if_netlan_51_clients,
$if_netlan_52_iot,
$if_netlan_53_public,
$if_netlan_54_management }
define v4_exposed_ifs = { $if_netlan_53_public }
define v6_exposed_ifs = { $if_netlan_53_public }
define v4_nat_ifs = { $if_netlan_51_clients,
$if_netlan_52_iot,
$if_netlan_54_management }
## Rules
table inet reverse-path-forwarding {
chain rpf-filter {
type filter hook prerouting priority mangle + 10; policy drop;
# Only allow packets if their source address is routed via their incoming interface.
# https://github.com/NixOS/nixpkgs/blob/d9d87c51960050e89c79e4025082ed965e770d68/nixos/modules/services/networking/firewall-nftables.nix#L100
fib saddr . mark . iif oif exists accept
}
}
table inet host {
chain input {
type filter hook input priority filter; policy drop;
iifname "lo" accept comment "allow loopback"
ct state invalid drop
ct state established,related accept
ip protocol icmp accept

This seems to be using tabs for some reason, probably best to replace with spaces.
We might want to start using .editorconfig files in the future.

This seems to be using tabs for some reason, probably best to replace with spaces. We might want to start using `.editorconfig` files in the future.
# ICMPv6
# https://datatracker.ietf.org/doc/html/rfc4890#autoid-24
# Allowlist consisting of: "Traffic That Must Not Be Dropped" and "Traffic That Normally Should Not Be Dropped"
# Error messages that are essential to the establishment and maintenance of communications:
icmpv6 type { destination-unreachable, packet-too-big } accept
icmpv6 type { time-exceeded } accept
icmpv6 type { parameter-problem } accept
# Connectivity checking messages:
icmpv6 type { echo-request, echo-reply } accept
# Address Configuration and Router Selection messages:
icmpv6 type { nd-router-solicit, nd-router-advert, nd-neighbor-solicit, nd-neighbor-advert, ind-neighbor-solicit, ind-neighbor-advert } accept
# Link-Local Multicast Receiver Notification messages:
icmpv6 type { mld-listener-query, mld-listener-report, mld-listener-done, mld2-listener-report } accept
# SEND Certificate Path Notification messages:
icmpv6 type { 148, 149 } accept
# Multicast Router Discovery messages:
icmpv6 type { 151, 152, 153 } accept
# Allow SSH access.
tcp dport 22 accept comment "allow ssh access"
# Allow WireGuard access.
udp dport 51820 accept comment "allow WireGuard access"
# Allow DHCP server access.
iifname { $lan_ifs } udp dport 67 accept comment "allow dhcp server access"

Same indentation problem here.

Same indentation problem here.
}
}
table ip v4nat {
chain prerouting {
type nat hook prerouting priority dstnat; policy accept;
}
chain postrouting {
type nat hook postrouting priority srcnat; policy accept;
iifname { $v4_nat_ifs, $if_wg55_management } oifname $wan_ifs masquerade
}
}
table inet forward {
chain forward {
type filter hook forward priority filter; policy drop;
ct state invalid drop
ct state established,related accept
# Allow internet access.
iifname { $lan_ifs, $if_wg55_management } oifname $wan_ifs accept comment "allow internet access"

Same indentation problem here.

Same indentation problem here.
# Allow access to exposed networks from internet.
meta nfproto ipv4 oifname $v4_exposed_ifs accept comment "allow v4 exposed network access"
meta nfproto ipv6 oifname $v6_exposed_ifs accept comment "allow v6 exposed network access"
# Allow clients and managment to most

"managment" -> "management"
Also "Allow clients and management to lan interfaces." might be a better comment for this rule.

"managment" -> "management" Also "Allow clients and management to lan interfaces." might be a better comment for this rule.
iifname { $if_netlan_51_clients, $if_netlan_54_management, $if_wg55_management } oifname $lan_ifs accept comment "allow clients and managment to lan_ifs"
}
}

View file

@ -0,0 +1,6 @@
[Match]
MACAddress=BC:24:11:72:A3:27
Type=ether
[Link]
Name=netlan

View file

@ -0,0 +1,6 @@
[Match]
MACAddress=BC:24:11:CF:65:57
Type=ether
[Link]
Name=netwan

View file

@ -0,0 +1,7 @@
[NetDev]
Name=netlan.51
Kind=vlan
[VLAN]
Id=51

View file

@ -0,0 +1,7 @@
[NetDev]
Name=netlan.52
Kind=vlan
[VLAN]
Id=52

View file

@ -0,0 +1,7 @@
[NetDev]
Name=netlan.53
Kind=vlan
[VLAN]
Id=53

View file

@ -0,0 +1,7 @@
[NetDev]
Name=netlan.54
Kind=vlan
[VLAN]
Id=54

View file

@ -0,0 +1,7 @@
[NetDev]
Name=netwan.400
Kind=vlan
[VLAN]
Id=400

View file

@ -0,0 +1,90 @@
[NetDev]
Description=Admin-Wireguard
Kind=wireguard
Name=wg55
[WireGuard]
ListenPort=51820
PrivateKeyFile=/etc/ansible_secrets/wireguard_wg55_privat_key

wireguard_wg55_privat_key -> wireguard_wg55_private_key

`wireguard_wg55_privat_key` -> `wireguard_wg55_private_key`
# WireGuard Peers
[WireGuardPeer]
# friendly_name = stb
AllowedIPs = 10.89.214.2/32,2a07:c481:1:37::2/128
PublicKey = vILSL4dbaC5IaTsRhJviamV18ssxWSj+qLVyowLQ214=
PersistentKeepalive = 30
[WireGuardPeer]
# friendly_name = fi
AllowedIPs = 10.89.214.3/32,2a07:c481:1:37::3/128
PublicKey = UHi/if5uW2V3+8Q3R+uk6/XpRi4fPXbw7chsKI4xlkI=
PresharedKeyFile = /etc/ansible_secrets/wireguard_wg55_peer_fi_psk
[WireGuardPeer]
# friendly_name = jtbx
AllowedIPs = 10.89.214.4/32,2a07:c481:1:37::4/128
PublicKey = NyyEqdWgScgsnTF8Zz/Om4Lc84fdFMwVtvaCmLEkUlQ=
[WireGuardPeer]
# friendly_name = June
AllowedIPs = 10.89.214.6/32,2a07:c481:1:37::6/128
PublicKey = 6jAEB+f9przBGxPhuvv9U9gvZDEBQNqpQSD0BoGqXQQ=
PresharedKeyFile = /etc/ansible_secrets/wireguard_wg55_peer_June_psk
[WireGuardPeer]
# friendly_name = Max
AllowedIPs = 10.89.214.7/32,2a07:c481:1:37::7/128
PublicKey = oC1hJjtlAgLX/CmbwTC+LPmd1uwluQTwsN8RaMNmHn0=
PresharedKeyFile = /etc/ansible_secrets/wireguard_wg55_peer_Max_psk
[WireGuardPeer]
# friendly_name = dario
AllowedIPs = 10.89.214.9/32,2a07:c481:1:37::9/128
PublicKey = bYF2EGRGpEGjiKcasi/oaWoWeLsgqsF6FGaq3Z4ERww=
PresharedKeyFile = /etc/ansible_secrets/wireguard_wg55_peer_dario_psk
[WireGuardPeer]
# friendly_name = June-mobile
AllowedIPs = 10.89.214.11/32,2a07:c481:1:37::11/128
PublicKey = 6edjXykegUgGjbkIG1aJyBlX1SgTKcqXXaSBVPHdKDc=
PresharedKeyFile = /etc/ansible_secrets/wireguard_wg55_peer_June-mobile_psk
[WireGuardPeer]
# friendly_name = djerun_at_ferrum.local
AllowedIPs = 10.89.214.12/32,2a07:c481:1:37::12/128
PublicKey = aHbdkTHhPkd+o7wWfTua9nd72aF4OVp66zGtpaoD8Fg=
[WireGuardPeer]
# friendly_name = c6ristian
AllowedIPs = 10.89.214.13/32,2a07:c481:1:37::13/128
PublicKey = 6ndwj3Ur6AqfUPWuyPYXIaGZs2ujJKawSQ9LEvlYzEc=
PresharedKeyFile = /etc/ansible_secrets/wireguard_wg55_peer_c6ristian_psk
[WireGuardPeer]
# friendly_name = langoor
AllowedIPs = 10.89.214.14/32,2a07:c481:1:37::14/128
PublicKey = qTnVQlQa1m4SucFFNli/xM6QWfsdWx2baRAit7Cg8RM=
PresharedKeyFile = /etc/ansible_secrets/wireguard_wg55_peer_langoor_psk
[WireGuardPeer]
# friendly_name = langoor_home
AllowedIPs = 10.89.214.15/32,2a07:c481:1:37::15/128
PublicKey = NeMDs2+5rHuKO5ZYXVUR76GorgdesFUnDOFECQ3RzG4=
PresharedKeyFile = /etc/ansible_secrets/wireguard_wg55_peer_langoor_home_psk
[WireGuardPeer]
# friendly_name = lilly-lillysLaptop
AllowedIPs = 10.89.214.16/32 #,2a07:c481:1:37::/128

IPv6 is missing the most significant bits. And is generally commented out weirdly?
#,2a07:c481:1:37::/128 -> ,2a07:c481:1:37::16/128

IPv6 is missing the most significant bits. And is generally commented out weirdly? ` #,2a07:c481:1:37::/128` -> `,2a07:c481:1:37::16/128`

took that directly from the opnsense config and just converted it to networkd format
and to not produce unexpected behavior I commented the ipv6 out,
because it did not have the important part

took that directly from the opnsense config and just converted it to networkd format and to not produce unexpected behavior I commented the ipv6 out, because it did not have the important part

Ah, ye, makes sense! Would just assign an IP then as that doesn't hurt and Lilly can choose to use it or not.

Ah, ye, makes sense! Would just assign an IP then as that doesn't hurt and Lilly can choose to use it or not.
PublicKey = IBsI+N8qUNpQnDc5HnqQ2Zo/1graFM0RMIecHmAF+Vk=
[WireGuardPeer]
# friendly_name = bitwhisker
AllowedIPs = 10.89.214.17/32,2a07:c481:1:37::a/128

If we want to count the v6 up in hex (which I think is reasonable as we do the same for the VLAN ID in the prefix), then it should also be done properly.

dec -> hex
-----------
...
15  ->  f # langoor_home
16  -> 10 # lilly-lillysLaptop
17  -> 11 # bitwhisker
18  -> 10 # forestcat
If we want to count the v6 up in hex (which I think is reasonable as we do the same for the VLAN ID in the prefix), then it should also be done properly. ``` dec -> hex ----------- ... 15 -> f # langoor_home 16 -> 10 # lilly-lillysLaptop 17 -> 11 # bitwhisker 18 -> 10 # forestcat ```

took that directly from the opnsense config and just converted it to networkd format

was considering it, but my reason for not doing that, was because I did not want to change the last part of the IPs that are already in use

took that directly from the opnsense config and just converted it to networkd format was considering it, but my reason for not doing that, was because I did not want to change the last part of the IPs that are already in use

Ah, I see, yeah, okay. We would have the option now, as we change things anyway, to clean up that configuration, but I'm also fine with keeping it as is for legacy reasons.
Just something to consider.

Ah, I see, yeah, okay. We would have the option now, as we change things anyway, to clean up that configuration, but I'm also fine with keeping it as is for legacy reasons. Just something to consider.
PublicKey = DvEGvQPGi+IxeRTIA72Gx3WNINcrV9HRNB1v7mHnhjA=
[WireGuardPeer]
# friendly_name = forestcat
AllowedIPs = 10.89.214.18/32,2a07:c481:1:37::b/128
PublicKey = PdJ7KlIeASizj0WTY87d7oSi14/MebrhRa+L8YiPoQE=

View file

@ -0,0 +1,12 @@
[Match]
Name=netlan
[Link]
RequiredForOnline=no
[Network]
VLAN=netwan.51
VLAN=netwan.52
VLAN=netwan.53
VLAN=netwan.54

View file

@ -0,0 +1,9 @@
[Match]
Name=netwan
[Link]
RequiredForOnline=no
[Network]
VLAN=netwan.400

View file

@ -0,0 +1,6 @@
[Match]
Name=wg55
[Network]
Address=10.89.214.1/24
Address=2a07:c481:1:37::1/64

View file

@ -0,0 +1,27 @@
[Match]
Name=netlan.51
Type=vlan
[Link]
RequiredForOnline=no
[Network]
Description=clients
# Masquerading done in nftables (nftables.conf).
IPv6SendRA=yes
[Address]
Address=10.89.208.1/22
[IPv6SendRA]
UplinkInterface=netwan.400
EmitDomains=true
Domains=ccchh.net
june marked this conversation as resolved

The search domain would be z9.ccchh.net. Unless it got decided to drop that now.

The search domain would be `z9.ccchh.net`. Unless it got decided to drop that now.

yes, we said yesterday, that we want to get rid of z9.ccchh.net. and z9. (tld)

yes, we said yesterday, that we want to get rid of z9.ccchh.net. and z9. (tld)
Managed=true
[IPv6Prefix]
Prefix=2a07:c481:1:33::/64
Assign=true
Token=static:::1

View file

@ -0,0 +1,27 @@
[Match]
Name=netlan.52
Type=vlan
[Link]
RequiredForOnline=no
[Network]
Description=IoT
# Masquerading done in nftables (nftables.conf).
IPv6SendRA=yes
[Address]
Address=10.89.212.1/24
[IPv6SendRA]
UplinkInterface=netwan.400
EmitDomains=true
Domains=ccchh.net
Managed=true
[IPv6Prefix]
Prefix=2a07:c481:1:34::/64
Assign=true
Token=static:::1

View file

@ -0,0 +1,27 @@
[Match]
Name=netlan.53
Type=vlan
[Link]
RequiredForOnline=no
[Network]
Description=public
# Masquerading done in nftables (nftables.conf).
IPv6SendRA=yes
[Address]
Address=185.161.130.65/28
[IPv6SendRA]
UplinkInterface=netwan.400
EmitDomains=true
Domains=ccchh.net
Managed=true
[IPv6Prefix]
Prefix=2a07:c481:1:35::/64
Assign=true
Token=static:::1

View file

@ -0,0 +1,27 @@
[Match]
Name=netlan.54
Type=vlan
[Link]
RequiredForOnline=no
[Network]
Description=Management
# Masquerading done in nftables (nftables.conf).
IPv6SendRA=yes
[Address]
Address=10.89.213.0/24
[IPv6SendRA]
UplinkInterface=netwan.400
EmitDomains=true
Domains=ccchh.net
Managed=true
[IPv6Prefix]
Prefix=2a07:c481:1:36::/64
Assign=true
Token=static:::1

View file

@ -0,0 +1,26 @@
[Match]
Name=netwan.400
Type=vlan
[Link]
RequiredForOnline=no
[Network]
Description=fux-uplink
DNS=185.161.128.66
DNS=2a07:c481:0:4::2
DNS=185.161.128.67
DNS=2a07:c481:0:4::3
IPv6AcceptRA=no
# Masquerading done in nftables (nftables.conf).
IPv6SendRA=no
[Address]
Address=185.161.129.134/25
Address=2a07:c481::1:2/64
[Route]
Gateway=185.161.129.129
Gateway=2a07:c481::1

View file

@ -0,0 +1,3 @@
[Network]
IPv4Forwarding=true
IPv6Forwarding=true