nix-files/hosts/common/net/default.nix
Colin f43d6bff92 route VPN traffic such that i can configure any app to selectively use the VPN
e.g. firejail --net=br-ovpnd-us-mi --noprofile --dns=46.227.67.134 getent ahostsv4 uninsane.org
2024-01-19 09:54:01 +00:00

63 lines
2.3 KiB
Nix

{ lib, ... }:
{
imports = [
./dns.nix
./hostnames.nix
./upnp.nix
./vpn.nix
];
systemd.network.enable = true;
networking.useNetworkd = true;
# view refused/dropped packets with: `sudo journalctl -k`
# networking.firewall.logRefusedPackets = true;
# networking.firewall.logRefusedUnicastsOnly = false;
networking.firewall.logReversePathDrops = true;
# linux will drop inbound packets if it thinks a reply to that packet wouldn't exit via the same interface (rpfilter).
# that heuristic fails for complicated VPN-style routing, especially with SNAT.
# networking.firewall.checkReversePath = false; # or "loose" to keep it partially.
# networking.firewall.enable = false; #< set false to debug
# the default backend is "wpa_supplicant".
# wpa_supplicant reliably picks weak APs to connect to.
# see: <https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/474>
# iwd is an alternative that shouldn't have this problem
# docs:
# - <https://nixos.wiki/wiki/Iwd>
# - <https://iwd.wiki.kernel.org/networkmanager>
# - `man iwd.config` for global config
# - `man iwd.network` for per-SSID config
# use `iwctl` to control
# networking.networkmanager.wifi.backend = "iwd";
# networking.wireless.iwd.enable = true;
# networking.wireless.iwd.settings = {
# # auto-connect to a stronger network if signal drops below this value
# # bedroom -> bedroom connection is -35 to -40 dBm
# # bedroom -> living room connection is -60 dBm
# General.RoamThreshold = "-52"; # default -70
# General.RoamThreshold5G = "-52"; # default -76
# };
# plugins mostly add support for establishing different VPN connections.
# the default plugin set includes mostly proprietary VPNs:
# - fortisslvpn (Fortinet)
# - iodine (DNS tunnels)
# - l2tp
# - openconnect (Cisco Anyconnect / Juniper / ocserv)
# - openvpn
# - vpnc (Cisco VPN)
# - sstp
#
# i don't use these, and notably they drag in huge dependency sets and don't cross compile well.
# e.g. openconnect drags in webkitgtk (for SSO)!
networking.networkmanager.plugins = lib.mkForce [];
# keyfile.path = where networkmanager should look for connection credentials
networking.networkmanager.extraConfig = ''
[keyfile]
path=/var/lib/NetworkManager/system-connections
'';
}