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{ config, pkgs, ... }:
with import <stockholm/lib>;
let
wifi = "wlp0s29u1u2";
in {
boot.extraModulePackages = [
pkgs.linuxPackages.rtl8814au
];
networking.networkmanager.unmanaged = [ wifi "et0" ];
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=a
channel=36
ieee80211d=1
country_code=DE
ieee80211n=1
ieee80211ac=1
wmm_enabled=1
# 5ghz
ssid=krebsing
auth_algs=1
wpa=2
wpa_key_mgmt=WPA-PSK
rsn_pairwise=CCMP
wpa_passphrase=aidsballz
''}";
Restart = "always";
};
};
networking.bridges.br0.interfaces = [
wifi
"et0"
];
networking.interfaces.br0.ipv4.addresses = [
{ address = "10.99.0.1"; prefixLength = 24; }
];
services.dhcpd4 = {
enable = true;
interfaces = [ "br0" ];
extraConfig = ''
option subnet-mask 255.255.255.0;
option routers 10.99.0.1;
option domain-name-servers 1.1.1.1, 8.8.8.8;
subnet 10.99.0.0 netmask 255.255.255.0 {
range 10.99.0.100 10.99.0.200;
}
'';
};
boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
krebs.iptables.tables.filter.FORWARD.rules = [
{ v6 = false; predicate = "-d 10.99.0.0/24 -o br0 -m conntrack --ctstate RELATED,ESTABLISHED"; target = "ACCEPT"; }
{ v6 = false; predicate = "-s 10.99.0.0/24 -i br0"; target = "ACCEPT"; }
{ v6 = false; predicate = "-i br0 -o br0"; target = "ACCEPT"; }
{ v6 = false; predicate = "-i br0 -o br0"; target = "ACCEPT"; }
{ v6 = false; predicate = "-o br0"; target = "REJECT --reject-with icmp-port-unreachable"; }
{ v6 = false; predicate = "-i br0"; target = "REJECT --reject-with icmp-port-unreachable"; }
];
krebs.iptables.tables.nat.PREROUTING.rules = [
{ v6 = false; predicate = "-s 10.99.0.0/24"; target = "ACCEPT"; precedence = 1000; }
];
krebs.iptables.tables.nat.POSTROUTING.rules = [
#TODO find out what this is about?
{ v6 = false; predicate = "-s 10.99.0.0/24 -d 224.0.0.0/24"; target = "RETURN"; }
{ v6 = false; predicate = "-s 10.99.0.0/24 -d 255.255.255.255"; target = "RETURN"; }
{ v6 = false; predicate = "-s 10.99.0.0/24 ! -d 10.99.0.0/24"; target = "MASQUERADE"; }
{ v6 = false; predicate = "-s 10.99.0.0/24 ! -d 10.99.0.0/24 -p tcp"; target = "MASQUERADE --to-ports 1024-65535"; }
{ v6 = false; predicate = "-s 10.99.0.0/24 ! -d 10.99.0.0/24 -p udp"; target = "MASQUERADE --to-ports 1024-65535"; }
];
}
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