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Factorise networking configurations (#19)

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This commit is contained in:
Nicolas Jeannerod 2024-11-21 11:33:24 +01:00
parent fe0c69f6d9 60ec9aab2a
commit 9c7b370447
Signed by untrusted user: Niols
GPG key ID: 35DB9EC8886E1CB8
8 changed files with 177 additions and 544 deletions
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4
flake.nix
View file

@ -60,6 +60,10 @@
enable = true;
inherit files;
};
trim-trailing-whitespace = {
enable = true;
inherit files;
};
};
devShells.default = pkgs.mkShell {

1
infra/common/default.nix Normal file
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@ -0,0 +1 @@
{ imports = [ ./networking.nix ]; }

70
infra/common/networking.nix Normal file
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@ -0,0 +1,70 @@
{ config, lib, ... }:
let
inherit (lib) mkOption;
in
{
options = {
procolix.vm = {
name = mkOption { };
ip4 = mkOption { };
ip6 = mkOption { };
};
};
config = {
services.openssh = {
enable = true;
settings.PasswordAuthentication = false;
};
networking = {
hostName = config.procolix.vm.name;
domain = "procolix.com";
interfaces = {
eth0 = {
ipv4 = {
addresses = [
{
address = config.procolix.vm.ip4;
prefixLength = 24;
}
];
};
ipv6 = {
addresses = [
{
address = config.procolix.vm.ip6;
prefixLength = 64;
}
];
};
};
};
defaultGateway = {
address = "185.206.232.1";
interface = "eth0";
};
defaultGateway6 = {
address = "2a00:51c0:12:1201::1";
interface = "eth0";
};
nameservers = [
"95.215.185.6"
"95.215.185.7"
"2a00:51c0::5fd7:b906"
"2a00:51c0::5fd7:b907"
];
firewall.enable = false;
nftables = {
enable = true;
rulesetFile = ./nftables-ruleset.nft;
};
};
};
}

70
infra/common/nftables-ruleset.nft Normal file
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@ -0,0 +1,70 @@
#!/usr/sbin/nft -f
flush ruleset
########### define usefull variables here #####################
define wan = eth0
define ssh_allow = {
83.161.147.127/32, # host801 ipv4
95.215.185.92/32, # host088 ipv4
95.215.185.211/32, # host089 ipv4
95.215.185.34/32, # nagios2 ipv4
95.215.185.235/32, # ansible-hq
}
define snmp_allow = {
95.215.185.31/32, # cacti ipv4
}
define nrpe_allow = {
95.215.185.34/32, # nagios2 ipv4
}
########### here starts the automated bit #####################
table inet filter {
chain input {
type filter hook input priority 0;
policy drop;
# established/related connections
ct state established,related accept
ct state invalid drop
# Limit ping requests.
ip protocol icmp icmp type echo-request limit rate over 10/second burst 50 packets drop
ip6 nexthdr icmpv6 icmpv6 type echo-request limit rate over 10/second burst 50 packets drop
# loopback interface
iifname lo accept
# icmp
ip protocol icmp icmp type { destination-unreachable, echo-reply, echo-request, source-quench, time-exceeded } accept
# Without the nd-* ones ipv6 will not work.
ip6 nexthdr icmpv6 icmpv6 type { destination-unreachable, echo-reply, echo-request, nd-neighbor-solicit, nd-router-advert, nd-neighbor-advert, packet-too-big, parameter-problem, time-exceeded } accept
# open tcp ports: sshd (22)
tcp dport {ssh} accept
# open tcp ports: snmp (161)
ip saddr $snmp_allow udp dport {snmp} accept
# open tcp ports: nrpe (5666)
ip saddr $nrpe_allow tcp dport {nrpe} accept
# open tcp ports: http (80,443)
tcp dport {http,https} accept
}
chain forward {
type filter hook forward priority 0;
}
chain output {
type filter hook output priority 0;
}
}
table ip nat {
chain postrouting {
}
chain prerouting {
}
}

186
infra/vm02116/configuration.nix
View file

@ -1,170 +1,23 @@
# Edit this configuration file to define what should be installed on
# your system. Help is available in the configuration.nix(5) man page, on
# https://search.nixos.org/options and in the NixOS manual (`nixos-help`).
{ pkgs, ... }:
{
imports = [
# Include the results of the hardware scan.
./hardware-configuration.nix
# This will install and configure Forgejo
./forgejo.nix
];
imports = [ ../common ];
procolix.vm = {
name = "vm02116";
ip4 = "185.206.232.34";
ip6 = "2a00:51c0:12:1201::20";
};
# Use the systemd-boot EFI boot loader.
boot.loader.systemd-boot.enable = true;
boot.loader.efi.canTouchEfiVariables = true;
# networking.hostName = "nixos"; # Define your hostname.
# Pick only one of the below networking options.
# networking.wireless.enable = true; # Enables wireless support via wpa_supplicant.
# networking.networkmanager.enable = true; # Easiest to use and most distros use this by default.
# Networking
networking = {
hostName = "vm02116";
domain = "procolix.com";
interfaces = {
eth0 = {
ipv4 = {
addresses = [
{
address = "185.206.232.34";
prefixLength = 24;
}
];
};
ipv6 = {
addresses = [
{
address = "2a00:51c0:12:1201::20";
prefixLength = 64;
}
];
};
};
};
defaultGateway = {
address = "185.206.232.1";
interface = "eth0";
};
defaultGateway6 = {
address = "2a00:51c0:12:1201::1";
interface = "eth0";
};
nameservers = [
"2a00:51c0::5fd7:b906"
"95.215.185.7"
];
firewall.enable = false;
nftables = {
enable = true;
ruleset = ''
#!/usr/sbin/nft -f
flush ruleset
########### define usefull variables here #####################
define wan = eth0
define ssh_allow = {
83.161.147.127/32, # host801 ipv4
95.215.185.92/32, # host088 ipv4
95.215.185.211/32, # host089 ipv4
95.215.185.34/32, # nagios2 ipv4
95.215.185.235, # ansible-hq
}
define snmp_allow = {
95.215.185.31/32, # cacti ipv4
}
define nrpe_allow = {
95.215.185.34/32, # nagios2 ipv4
}
########### here starts the automated bit #####################
table inet filter {
chain input {
type filter hook input priority 0;
policy drop;
# established/related connections
ct state established,related accept
ct state invalid drop
# Limit ping requests.
ip protocol icmp icmp type echo-request limit rate over 10/second burst 50 packets drop
ip6 nexthdr icmpv6 icmpv6 type echo-request limit rate over 10/second burst 50 packets drop
# loopback interface
iifname lo accept
# icmp
ip protocol icmp icmp type { destination-unreachable, echo-reply, echo-request, source-quench, time-exceeded } accept
# Without the nd-* ones ipv6 will not work.
ip6 nexthdr icmpv6 icmpv6 type { destination-unreachable, echo-reply, echo-request, nd-neighbor-solicit, nd-router-advert, nd-neighbor-advert, packet-too-big, parameter-problem, time-exceeded } accept
# open tcp ports: sshd (22)
#ip saddr $ssh_allow tcp dport {ssh} accept
tcp dport {ssh} accept
# open tcp ports: snmp (161)
ip saddr $snmp_allow udp dport {snmp} accept
# open tcp ports: nrpe (5666)
ip saddr $nrpe_allow tcp dport {nrpe} accept
# open tcp ports: http (80,443)
tcp dport {http,https} accept
}
chain forward {
type filter hook forward priority 0;
}
chain output {
type filter hook output priority 0;
}
}
table ip nat {
chain postrouting {
}
chain prerouting {
}
}
'';
};
};
# Set your time zone.
time.timeZone = "Europe/Amsterdam";
# Configure network proxy if necessary
# networking.proxy.default = "http://user:password@proxy:port/";
# networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
# Select internationalisation properties.
i18n.defaultLocale = "en_US.UTF-8";
# console = {
# font = "Lat2-Terminus16";
# keyMap = "us";
# useXkbConfig = true; # use xkb.options in tty.
# };
# Enable the X11 windowing system.
# services.xserver.enable = true;
# Configure keymap in X11
# services.xserver.xkb.layout = "us";
# services.xserver.xkb.options = "eurosign:e,caps:escape";
# Enable CUPS to print documents.
# services.printing.enable = true;
# Enable sound.
# sound.enable = true;
# hardware.pulseaudio.enable = true;
# Enable touchpad support (enabled default in most desktopManager).
# services.xserver.libinput.enable = true;
# Define a user account. Don't forget to set a password with ‘passwd’.
users.users = {
@ -204,29 +57,7 @@
subversion
];
# Some programs need SUID wrappers, can be configured further or are
# started in user sessions.
# programs.mtr.enable = true;
# programs.gnupg.agent = {
# enable = true;
# enableSSHSupport = true;
# };
# List services that you want to enable:
services = {
openssh = {
enable = true;
};
xe-guest-utilities = {
enable = true;
};
};
# Open ports in the firewall.
# networking.firewall.allowedTCPPorts = [ ... ];
# networking.firewall.allowedUDPPorts = [ ... ];
# Or disable the firewall altogether.
# networking.firewall.enable = false;
services.xe-guest-utilities.enable = true;
# This option defines the first version of NixOS you have installed on this particular machine,
# and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
@ -245,5 +76,4 @@
#
# For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
system.stateVersion = "24.05";
}

130
infra/vm02179/configuration.nix
View file

@ -1,126 +1,18 @@
# Edit this configuration file to define what should be installed on
# your system. Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).
{ pkgs, ... }:
{
imports = [ ../common ];
procolix.vm = {
name = "vm02179";
ip4 = "185.206.232.179";
ip6 = "2a00:51c0:12:1201::179";
};
# Use the systemd-boot EFI boot loader.
boot.loader.systemd-boot.enable = true;
boot.loader.efi.canTouchEfiVariables = true;
networking = {
hostName = "vm02179";
domain = "procolix.com";
interfaces = {
eth0 = {
ipv4 = {
addresses = [
{
address = "185.206.232.179";
prefixLength = 24;
}
];
};
ipv6 = {
addresses = [
{
address = "2a00:51c0:12:1201::179";
prefixLength = 64;
}
];
};
};
};
defaultGateway = {
address = "185.206.232.1";
interface = "eth0";
};
defaultGateway6 = {
address = "2a00:51c0:12:1201::1";
interface = "eth0";
};
nameservers = [
"95.215.185.6"
"95.215.185.7"
];
firewall.enable = false;
nftables = {
enable = true;
ruleset = ''
#!/usr/sbin/nft -f
flush ruleset
########### define usefull variables here #####################
define wan = eth0
define ssh_allow = {
83.161.147.127/32, # host801 ipv4
95.215.185.92/32, # host088 ipv4
95.215.185.211/32, # host089 ipv4
95.215.185.34/32, # nagios2 ipv4
95.215.185.181/32, # ansible.procolix.com
95.215.185.235, # ansible-hq
}
define snmp_allow = {
95.215.185.31/32, # cacti ipv4
}
define nrpe_allow = {
95.215.185.34/32, # nagios2 ipv4
}
########### here starts the automated bit #####################
table inet filter {
chain input {
type filter hook input priority 0;
policy drop;
# established/related connections
ct state established,related accept
ct state invalid drop
# Limit ping requests.
ip protocol icmp icmp type echo-request limit rate over 10/second burst 50 packets drop
ip6 nexthdr icmpv6 icmpv6 type echo-request limit rate over 10/second burst 50 packets drop
# loopback interface
iifname lo accept
# icmp
ip protocol icmp icmp type { destination-unreachable, echo-reply, echo-request, source-quench, time-exceeded } accept
# Without the nd-* ones ipv6 will not work.
ip6 nexthdr icmpv6 icmpv6 type { destination-unreachable, echo-reply, echo-request, nd-neighbor-solicit, nd-router-advert, nd-neighbor-advert, packet-too-big, parameter-problem, time-exceeded } accept
# open tcp ports: sshd (22)
tcp dport {ssh} accept
# open tcp ports: snmp (161)
ip saddr $snmp_allow udp dport {snmp} accept
# open tcp ports: nrpe (5666)
ip saddr $nrpe_allow tcp dport {nrpe} accept
# open tcp ports: http (80,443)
tcp dport {http,https} accept
}
chain forward {
type filter hook forward priority 0;
}
chain output {
type filter hook output priority 0;
}
}
table ip nat {
chain postrouting {
}
chain prerouting {
}
}
'';
};
};
# Set your time zone.
time.timeZone = "Europe/Amsterdam";
@ -182,11 +74,6 @@
wget
];
# List services that you want to enable:
# Enable the OpenSSH daemon.
services.openssh.enable = true;
# This value determines the NixOS release from which the default
# settings for stateful data, like file locations and database versions
# on your system were taken. It‘s perfectly fine and recommended to leave
@ -194,5 +81,4 @@
# Before changing this value read the documentation for this option
# (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
system.stateVersion = "24.05"; # Did you read the comment?
}

125
infra/vm02186/procolix-configuration.nix
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@ -1,122 +1,18 @@
{ pkgs, ... }:
{
imports = [ ../common ];
procolix.vm = {
name = "vm02186";
ip4 = "185.206.232.186";
ip6 = "2a00:51c0:12:1201::186";
};
# Use the systemd-boot EFI boot loader.
boot.loader.systemd-boot.enable = true;
boot.loader.efi.canTouchEfiVariables = true;
networking = {
hostName = "vm02186";
domain = "procolix.com";
interfaces = {
eth0 = {
ipv4 = {
addresses = [
{
address = "185.206.232.186";
prefixLength = 24;
}
];
};
ipv6 = {
addresses = [
{
address = "2a00:51c0:12:1201::186";
prefixLength = 64;
}
];
};
};
};
defaultGateway = {
address = "185.206.232.1";
interface = "eth0";
};
defaultGateway6 = {
address = "2a00:51c0:12:1201::1";
interface = "eth0";
};
nameservers = [
"95.215.185.6"
"95.215.185.7"
];
firewall.enable = false;
nftables = {
enable = true;
ruleset = ''
#!/usr/sbin/nft -f
flush ruleset
########### define usefull variables here #####################
define wan = eth0
define ssh_allow = {
83.161.147.127/32, # host801 ipv4
95.215.185.92/32, # host088 ipv4
95.215.185.211/32, # host089 ipv4
95.215.185.34/32, # nagios2 ipv4
95.215.185.181/32, # ansible.procolix.com
95.215.185.235/32, # ansible-hq
}
define snmp_allow = {
95.215.185.31/32, # cacti ipv4
}
define nrpe_allow = {
95.215.185.34/32, # nagios2 ipv4
}
########### here starts the automated bit #####################
table inet filter {
chain input {
type filter hook input priority 0;
policy drop;
# established/related connections
ct state established,related accept
ct state invalid drop
# Limit ping requests.
ip protocol icmp icmp type echo-request limit rate over 10/second burst 50 packets drop
ip6 nexthdr icmpv6 icmpv6 type echo-request limit rate over 10/second burst 50 packets drop
# loopback interface
iifname lo accept
# icmp
ip protocol icmp icmp type { destination-unreachable, echo-reply, echo-request, source-quench, time-exceeded } accept
# Without the nd-* ones ipv6 will not work.
ip6 nexthdr icmpv6 icmpv6 type { destination-unreachable, echo-reply, echo-request, nd-neighbor-solicit, nd-router-advert, nd-neighbor-advert, packet-too-big, parameter-problem, time-exceeded } accept
# open tcp ports: sshd (22)
tcp dport {ssh} accept
# open tcp ports: snmp (161)
ip saddr $snmp_allow udp dport {snmp} accept
# open tcp ports: nrpe (5666)
ip saddr $nrpe_allow tcp dport {nrpe} accept
# open tcp ports: http (80,443)
tcp dport {http,https} accept
}
chain forward {
type filter hook forward priority 0;
}
chain output {
type filter hook output priority 0;
}
}
table ip nat {
chain postrouting {
}
chain prerouting {
}
}
'';
};
};
# Set your time zone.
time.timeZone = "Europe/Amsterdam";
@ -182,11 +78,6 @@
wget
];
# List services that you want to enable:
# Enable the OpenSSH daemon.
services.openssh.enable = true;
# This value determines the NixOS release from which the default
# settings for stateful data, like file locations and database versions
# on your system were taken. It‘s perfectly fine and recommended to leave

133
infra/vm02187/configuration.nix
View file

@ -1,14 +1,13 @@
# Edit this configuration file to define what should be installed on
# your system. Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).
{ pkgs, ... }:
{
imports = [
# Include the results of the hardware scan.
./hardware-configuration.nix
];
imports = [ ../common ];
procolix.vm = {
name = "vm02187";
ip4 = "185.206.232.187";
ip6 = "2a00:51c0:12:1201::187";
};
# Use the systemd-boot EFI boot loader.
boot.loader.systemd-boot.enable = true;
@ -76,119 +75,6 @@
users.users.nginx.extraGroups = [ "acme" ];
networking = {
hostName = "vm02187";
domain = "procolix.com";
interfaces = {
eth0 = {
ipv4 = {
addresses = [
{
address = "185.206.232.187";
prefixLength = 24;
}
];
};
ipv6 = {
addresses = [
{
address = "2a00:51c0:12:1201::187";
prefixLength = 64;
}
];
};
};
};
defaultGateway = {
address = "185.206.232.1";
interface = "eth0";
};
defaultGateway6 = {
address = "2a00:51c0:12:1201::1";
interface = "eth0";
};
nameservers = [
"95.215.185.6"
"95.215.185.7"
];
firewall.enable = false;
nftables = {
enable = true;
ruleset = ''
#!/usr/sbin/nft -f
flush ruleset
########### define usefull variables here #####################
define wan = eth0
define ssh_allow = {
83.161.147.127/32, # host801 ipv4
95.215.185.92/32, # host088 ipv4
95.215.185.211/32, # host089 ipv4
95.215.185.34/32, # nagios2 ipv4
95.215.185.181/32, # ansible.procolix.com
95.215.185.235, # ansible-hq
}
define snmp_allow = {
95.215.185.31/32, # cacti ipv4
}
define nrpe_allow = {
95.215.185.34/32, # nagios2 ipv4
}
########### here starts the automated bit #####################
table inet filter {
chain input {
type filter hook input priority 0;
policy drop;
# established/related connections
ct state established,related accept
ct state invalid drop
# Limit ping requests.
ip protocol icmp icmp type echo-request limit rate over 10/second burst 50 packets drop
ip6 nexthdr icmpv6 icmpv6 type echo-request limit rate over 10/second burst 50 packets drop
# loopback interface
iifname lo accept
# icmp
ip protocol icmp icmp type { destination-unreachable, echo-reply, echo-request, source-quench, time-exceeded } accept
# Without the nd-* ones ipv6 will not work.
ip6 nexthdr icmpv6 icmpv6 type { destination-unreachable, echo-reply, echo-request, nd-neighbor-solicit, nd-router-advert, nd-neighbor-advert, packet-too-big, parameter-problem, time-exceeded } accept
# open tcp ports: sshd (22)
# ip saddr $ssh_allow tcp dport {ssh} accept
tcp dport {ssh} accept
# open tcp ports: snmp (161)
ip saddr $snmp_allow udp dport {snmp} accept
# open tcp ports: nrpe (5666)
ip saddr $nrpe_allow tcp dport {nrpe} accept
# open tcp ports: http (80,443)
tcp dport {http,https} accept
}
chain forward {
type filter hook forward priority 0;
}
chain output {
type filter hook output priority 0;
}
}
table ip nat {
chain postrouting {
}
chain prerouting {
}
}
'';
};
};
# Set your time zone.
time.timeZone = "Europe/Amsterdam";
@ -244,11 +130,6 @@
wget
];
# List services that you want to enable:
# Enable the OpenSSH daemon.
services.openssh.enable = true;
services.openssh.settings.PasswordAuthentication = false;
security.sudo.wheelNeedsPassword = false;
# This value determines the NixOS release from which the default