configure wg

This commit is contained in:
alex 2024-02-11 14:36:13 -05:00
parent 83a079597b
commit ec63f34981
2 changed files with 93 additions and 0 deletions

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@ -102,6 +102,59 @@
# Or disable the firewall altogether.
networking.firewall.enable = false;
# enable NAT
networking.nat.enable = true;
networking.nat.externalInterface = "enp42s0";
networking.nat.internalInterfaces = [ "wg0" ];
networking.firewall = {
allowedUDPPorts = [ 51820 ];
};
networking.wireguard.interfaces = {
# "wg0" is the network interface name. You can name the interface arbitrarily.
wg0 = {
# Determines the IP address and subnet of the server's end of the tunnel interface.
ips = [ "10.100.0.1/24" ];
# The port that WireGuard listens to. Must be accessible by the client.
listenPort = 51820;
# This allows the wireguard server to route your traffic to the internet and hence be like a VPN
# For this to work you have to set the dnsserver IP of your router (or dnsserver of choice) in your clients
postSetup = ''
${pkgs.iptables}/bin/iptables -t nat -A POSTROUTING -s 10.100.0.0/24 -o eth0 -j MASQUERADE
'';
# This undoes the above command
postShutdown = ''
${pkgs.iptables}/bin/iptables -t nat -D POSTROUTING -s 10.100.0.0/24 -o eth0 -j MASQUERADE
'';
# Path to the private key file.
#
# Note: The private key can also be included inline via the privateKey option,
# but this makes the private key world-readable; thus, using privateKeyFile is
# recommended.
privateKeyFile = "/home/alex/wireguard-keys/private";
peers = [
# List of allowed peers.
{
# Feel free to give a meaning full name
# Public key of the peer (not a file path).
publicKey = "KVViY+Bgu7PoBeS+rthcyQVQB03IdolxDzc5ZwsdNnM=";
# List of IPs assigned to this peer within the tunnel subnet. Used to configure routing.
allowedIPs = [ "10.100.0.2/32" ];
}
{
# John Doe
publicKey = "{john doe's public key}";
allowedIPs = [ "10.100.0.3/32" ];
}
];
};
};
# Copy the NixOS configuration file and link it from the resulting system
# (/run/current-system/configuration.nix). This is useful in case you
# accidentally delete configuration.nix.

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@ -26,6 +26,46 @@
# 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.firewall = {
allowedUDPPorts = [ 51820 ]; # Clients and peers can use the same port, see listenport
};
# Enable WireGuard
networking.wireguard.interfaces = {
# "wg0" is the network interface name. You can name the interface arbitrarily.
wg0 = {
# Determines the IP address and subnet of the client's end of the tunnel interface.
ips = [ "10.100.0.2/24" ];
listenPort = 51820; # to match firewall allowedUDPPorts (without this wg uses random port numbers)
# Path to the private key file.
#
# Note: The private key can also be included inline via the privateKey option,
# but this makes the private key world-readable; thus, using privateKeyFile is
# recommended.
privateKeyFile = "/home/alex/wireguard-keys/private";
peers = [
# For a client configuration, one peer entry for the server will suffice.
{
# Public key of the server (not a file path).
publicKey = "aD40D1jcgLbIZGkA1AoXkwpmP6hSWcttf3ptq4GRjC0=";
# Forward all the traffic via VPN.
allowedIPs = [ "0.0.0.0/0" ];
# Or forward only particular subnets
#allowedIPs = [ "10.100.0.1" "91.108.12.0/22" ];
# Set this to the server IP and port.
endpoint = "192.168.1.226:51820"; # ToDo: route to endpoint not automatically configured https://wiki.archlinux.org/index.php/WireGuard#Loop_routing https://discourse.nixos.org/t/solved-minimal-firewall-setup-for-wireguard-client/7577
# Send keepalives every 25 seconds. Important to keep NAT tables alive.
persistentKeepalive = 25;
}
];
};
};
# Set your time zone.
time.timeZone = "America/New_York";