118 lines
3.8 KiB
Nix
118 lines
3.8 KiB
Nix
{ lib, config, pkgs, ... }:
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let
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secrets = import ./secrets.nix;
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in {
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networking.hostName = "local";
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networking.nameservers = [ "1.1.1.1" ];
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environment.etc = {
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"resolv.conf".text = "nameserver 1.1.1.1\n";
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};
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networking.usePredictableInterfaceNames = false;
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networking.wireless.enable = true;
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networking.wireless.interfaces = [ "wlan0" ];
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imports = [ ./wireless-networks.nix ];
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networking.extraHosts = secrets.hosts;
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networking.firewall = {
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enable = true;
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extraCommands = ''
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ip6tables -F OUTPUT
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ip6tables -P OUTPUT DROP
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ip6tables -A OUTPUT -o lo+ -j ACCEPT
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iptables -F OUTPUT
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iptables -P OUTPUT DROP
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iptables -A OUTPUT -o lo+ -j ACCEPT
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iptables -A OUTPUT -o vpn+ -j ACCEPT
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iptables -A OUTPUT -o tun+ -j ACCEPT
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iptables -A OUTPUT -o tap+ -j ACCEPT
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iptables -A OUTPUT -o veth+ -j ACCEPT
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iptables -A OUTPUT -o vnet+ -j ACCEPT
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iptables -A OUTPUT -o docker+ -j ACCEPT
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iptables -A OUTPUT -o virbr+ -j ACCEPT
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iptables -A OUTPUT -o virbr0-nic -j ACCEPT
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# Allow access for special user for use captive portals without
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# disabling vpn-only restrictions (to avoid leaks at the first seconds
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# after connection)
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iptables -A OUTPUT -m owner --uid-owner captive \
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-p tcp -m multiport --dports 80,443,2443 \
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-j ACCEPT
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iptables -A OUTPUT -m owner --uid-owner captive \
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-p udp -m multiport --dports 53 \
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-j ACCEPT
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# iptables -A OUTPUT -d 192.0.2.17 -j ACCEPT
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${secrets.iptables}
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'';
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allowPing = false;
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};
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# User without vpn-only restrictions (for captive portals)
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users.users.captive = {
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isNormalUser = true;
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};
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services.nscd.enable = false;
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system.nssModules = lib.mkForce [];
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services.openvpn.servers.vpn = {
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autoStart = true;
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config = secrets.vpn-config;
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authUserPass.username = secrets.vpn-username;
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authUserPass.password = secrets.vpn-password;
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updateResolvConf = true;
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};
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systemd = {
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services = {
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ntpd.serviceConfig.TimeoutStopSec = 5;
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"macchanger-wlan0" = {
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description = "Changes MAC of wlan0 for privacy reasons";
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wants = [ "network-pre.target" ];
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wantedBy = [ "multi-user.target" ];
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before = [ "network-pre.target" ];
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bindsTo = [ "sys-subsystem-net-devices-wlan0.device" ];
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after = [ "sys-subsystem-net-devices-wlan0.device" ];
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script = "${pkgs.macchanger}/bin/macchanger -e wlan0 || true";
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serviceConfig.Type = "oneshot";
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};
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"macchanger-eth0" = {
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description = "Changes MAC of eth0 for privacy reasons";
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wants = [ "network-pre.target" ];
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wantedBy = [ "multi-user.target" ];
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before = [ "network-pre.target" ];
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bindsTo = [ "sys-subsystem-net-devices-eth0.device" ];
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after = [ "sys-subsystem-net-devices-eth0.device" ];
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script = "${pkgs.macchanger}/bin/macchanger -e eth0 || true";
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serviceConfig.Type = "oneshot";
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};
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"openvpn-restart-after-suspend" = {
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description = "Restart OpenVPN after suspend";
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after = [ "suspend.target" "hibernate.target" "hybrid-sleep.target" ];
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wantedBy = [ "suspend.target" "hibernate.target" "hybrid-sleep.target" ];
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script = "${pkgs.systemd}/bin/systemctl try-restart openvpn-vpn.service";
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};
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"openvpn-keep-alive" = {
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description = "Make sure OpenVPN connection is alive";
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after = [ "openvpn-vpn.service" ];
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wantedBy = [ "openvpn-vpn.service" ];
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script = ''
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while [ 1 ]; do
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sleep 10s
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timeout 10s ${pkgs.iputils}/bin/ping -c1 1.1.1.1 >/dev/null 2>&1 || \
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${pkgs.systemd}/bin/systemctl try-restart openvpn-vpn.service
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done
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'';
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};
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};
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};
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}
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