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pvv-nixos-config/services/matrix/coturn.nix

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{ config, lib, pkgs, secrets, ... }:
{
sops.secrets."matrix/synapse/turnconfig" = {
owner = config.users.users.matrix-synapse.name;
group = config.users.users.matrix-synapse.group;
};
sops.secrets."matrix/coturn/static-auth-secret" = {
owner = config.users.users.turnserver.name;
group = config.users.users.turnserver.group;
};
services.matrix-synapse-next = {
extraConfigFiles = [
config.sops.secrets."matrix/synapse/turnconfig".path
];
settings = {
turn_uris = [
"turns:turn.pvv.ntnu.no:443?transport=tcp"
"turns:turn.pvv.ntnu.no:443?transport=udp"
"turns:turn.pvv.ntnu.no:5349?transport=tcp"
"turns:turn.pvv.ntnu.no:5349?transport=udp"
"turns:turn.pvv.ntnu.no:3478?transport=udp"
"turns:turn.pvv.ntnu.no:3478?transport=tcp"
"turn:turn.pvv.ntnu.no:3478?transport=udp"
"turn:turn.pvv.ntnu.no:3478?transport=tcp"
"turns:turn.pvv.ntnu.no:3479?transport=tcp"
"turns:turn.pvv.ntnu.no:3479?transport=udp"
"turn:turn.pvv.ntnu.no:3479?transport=tcp"
"turn:turn.pvv.ntnu.no:3479?transport=udp"
];
};
};
security.acme.certs.${config.services.coturn.realm} = {
email = "drift@pvv.ntnu.no";
listenHTTP = "129.241.210.213:80";
reloadServices = [ "coturn.service" ];
};
users.users.turnserver.extraGroups = [ "acme" ];
systemd.services."acme-${config.services.coturn.realm}".serviceConfig = {
AmbientCapabilities = [ "CAP_NET_BIND_SERVICE" ];
};
services.coturn = rec {
enable = true;
realm = "turn.pvv.ntnu.no";
cert = "${config.security.acme.certs.${realm}.directory}/full.pem";
pkey = "${config.security.acme.certs.${realm}.directory}/key.pem";
use-auth-secret = true;
# World readable but I dont think it's that bad
static-auth-secret-file = config.sops.secrets."matrix/coturn/static-auth-secret".path;
secure-stun = true;
listening-ips = [ "129.241.210.213" "2001:700:300:1900::213" ];
tls-listening-port = 443;
alt-tls-listening-port = 5349;
listening-port = 3478;
min-port = 49000;
max-port = 50000;
no-tls = false;
no-dtls = false;
no-tcp-relay = false;
extraConfig = ''
verbose
# ban private IP ranges
no-multicast-peers
denied-peer-ip=0.0.0.0-0.255.255.255
denied-peer-ip=10.0.0.0-10.255.255.255
denied-peer-ip=100.64.0.0-100.127.255.255
denied-peer-ip=127.0.0.0-127.255.255.255
denied-peer-ip=169.254.0.0-169.254.255.255
denied-peer-ip=172.16.0.0-172.31.255.255
denied-peer-ip=192.0.0.0-192.0.0.255
denied-peer-ip=192.0.2.0-192.0.2.255
denied-peer-ip=192.88.99.0-192.88.99.255
denied-peer-ip=192.168.0.0-192.168.255.255
denied-peer-ip=198.18.0.0-198.19.255.255
denied-peer-ip=198.51.100.0-198.51.100.255
denied-peer-ip=203.0.113.0-203.0.113.255
denied-peer-ip=240.0.0.0-255.255.255.255
denied-peer-ip=::1
denied-peer-ip=64:ff9b::-64:ff9b::ffff:ffff
denied-peer-ip=::ffff:0.0.0.0-::ffff:255.255.255.255
denied-peer-ip=100::-100::ffff:ffff:ffff:ffff
denied-peer-ip=2001::-2001:1ff:ffff:ffff:ffff:ffff:ffff:ffff
denied-peer-ip=2002::-2002:ffff:ffff:ffff:ffff:ffff:ffff:ffff
denied-peer-ip=fc00::-fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
denied-peer-ip=fe80::-febf:ffff:ffff:ffff:ffff:ffff:ffff:ffff
denied-peer-ip=10.0.0.0-10.255.255.255
denied-peer-ip=192.168.0.0-192.168.255.255
denied-peer-ip=172.16.0.0-172.31.255.255
#user-quota=120
#total-quota=1200
'';
};
networking.firewall = {
interfaces.ens18 = let
range = with config.services.coturn; [ {
from = min-port;
to = max-port;
} ];
in
{
allowedUDPPortRanges = range;
allowedUDPPorts = [ 443 3478 3479 5349 ];
allowedTCPPortRanges = range;
allowedTCPPorts = [ 443 3478 3479 5349 ];
};
};
}