78 lines
1.9 KiB
Nix
78 lines
1.9 KiB
Nix
{ lib, pkgs, config, ... }:
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let
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# you find this device using `ifconfig -a` or `ip link`
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wifi = "wlp3s0";
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ipAddress = "10.23.45.1";
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prefixLength = 24;
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servedAddressRange = "10.23.45.2,10.23.45.150,12h";
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ssid = "home/wifi";
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in
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{
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# todo only open needed ports
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networking.firewall.trustedInterfaces = [ wifi ];
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networking.networkmanager.unmanaged = [ wifi ];
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networking.dhcpcd.denyInterfaces = [ wifi ];
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networking.interfaces."${wifi}".ipv4.addresses = [{
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address = ipAddress;
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prefixLength = prefixLength;
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}];
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systemd.services.hostapd = {
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description = "hostapd wireless AP";
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path = [ pkgs.hostapd ];
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wantedBy = [ "network.target" ];
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after = [
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"${wifi}-cfg.service"
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"nat.service"
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"bind.service"
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"dhcpd.service"
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"sys-subsystem-net-devices-${wifi}.device"
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];
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serviceConfig = {
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ExecStart = "${pkgs.hostapd}/bin/hostapd ${
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pkgs.writeText "hostapd.conf" ''
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interface=${wifi}
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hw_mode=g
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channel=10
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ieee80211d=1
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country_code=DE
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ieee80211n=1
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wmm_enabled=1
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ssid=${ssid}
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auth_algs=1
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wpa=2
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wpa_key_mgmt=WPA-PSK
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rsn_pairwise=CCMP
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wpa_psk_file=${config.sops.secrets.hostapd_wpa_psk.path}
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''
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}";
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Restart = "always";
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};
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};
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sops.secrets.hostapd_wpa_psk = { };
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services.dnsmasq = {
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enable = true;
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extraConfig = ''
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# Only listen to routers' LAN NIC. Doing so opens up tcp/udp port 53 to
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# localhost and udp port 67 to world:
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interface=${wifi}
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# Explicitly specify the address to listen on
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listen-address=${ipAddress}
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# Dynamic range of IPs to make available to LAN PC and the lease time.
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# Ideally set the lease time to 5m only at first to test everything works okay before you set long-lasting records.
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dhcp-range=${servedAddressRange}
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'';
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};
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}
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