nixos-config/configs/porani/wifi-access-point.nix

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2019-10-24 02:20:38 +02:00
{lib, pkgs, ... }:
let
wifi = "wlp0s29u1u2";
ipAddress = "10.23.45.1";
prefixLength = 24;
servedAddressRange = "10.23.45.2,10.23.45.150,12h";
ssid="palosiot";
wifiPassword=lib.fileContents <secrets/iot_wifi>;
in
{
# todo only open needed ports
networking.firewall.trustedInterfaces = [ wifi ];
networking.networkmanager.unmanaged = [ wifi ];
networking.dhcpcd.denyInterfaces = [ wifi ];
networking.interfaces."${wifi}".ipv4.addresses = [ {
address = ipAddress; prefixLength = prefixLength;
}];
systemd.services.hostapd = {
description = "hostapd wireless AP";
path = [ pkgs.hostapd ];
wantedBy = [ "network.target" ];
after = [ "${wifi}-cfg.service" "nat.service" "bind.service" "dhcpd.service" "sys-subsystem-net-devices-${wifi}.device" ];
serviceConfig = {
ExecStart = "${pkgs.hostapd}/bin/hostapd ${pkgs.writeText "hostapd.conf" ''
interface=${wifi}
hw_mode=g
channel=10
ieee80211d=1
country_code=DE
ieee80211n=1
wmm_enabled=1
ssid=${ssid}
auth_algs=1
wpa=2
wpa_key_mgmt=WPA-PSK
rsn_pairwise=CCMP
wpa_passphrase=${wifiPassword}
''}";
Restart = "always";
};
};
services.dnsmasq = {
enable = true;
extraConfig = ''
# Only listen to routers' LAN NIC. Doing so opens up tcp/udp port 53 to
# localhost and udp port 67 to world:
interface=${wifi}
# Explicitly specify the address to listen on
listen-address=${ipAddress}
# Dynamic range of IPs to make available to LAN PC and the lease time.
# Ideally set the lease time to 5m only at first to test everything works okay before you set long-lasting records.
dhcp-range=${servedAddressRange}
'';
};
}