shinobu/router: Disable wg-upstream
This only complicates many things and creates too much overhead on such a slow connection.
This commit is contained in:
parent
642fea6b8e
commit
3d880316de
GPG key ID:
8D3C82F9F309F8EC
|
|
@ -1,13 +1,3 @@
|
|||
{
|
||||
domain = "home.sbruder.de";
|
||||
vpnBypassFwMark = 10000;
|
||||
wg-upstream = {
|
||||
endpoint = rec {
|
||||
address = "193.32.248.71";
|
||||
port = 51820;
|
||||
full = "${address}:${toString port}";
|
||||
};
|
||||
publicKey = "eprzkkkSbXCANngQDo305DIAvkKAnZaN71IpTNaOoTk=";
|
||||
addresses = [ "10.66.208.88/32" "fc00:bbbb:bbbb:bb01::3:d057/128" ];
|
||||
};
|
||||
}
|
||||
|
|
|
|||
|
|
@ -12,8 +12,8 @@
|
|||
# It consists of shinobu as a router (this configuration),
|
||||
# connected to a TP-LINK TL-SG105E “smart managed” (i.e., it can do VLANs) 5-port switch.
|
||||
# The upstream comes (for now) from a PŸUR “WLAN-Kabelbox” (Compal CH7467CE).
|
||||
# Sadly, I could not enable bridge mode on it, so the packets now go through (at least) four layers of NAT:
|
||||
# device → NAT on shinobu (→ NAT on plastic router → PŸUR CGNAT) → NAT on VPN
|
||||
# Sadly, I could not enable bridge mode on it, so the packets now go through (at least) three layers of NAT:
|
||||
# device → NAT on shinobu → NAT on plastic router → PŸUR CGNAT
|
||||
#
|
||||
# Because the switch only supports GbE,
|
||||
# the two clients I currently have with support for 2.5GbE are connected
|
||||
|
|
@ -45,11 +45,6 @@ in
|
|||
ethtool
|
||||
];
|
||||
|
||||
sops.secrets.wg-upstream-private-key = {
|
||||
owner = config.users.users.systemd-network.name;
|
||||
sopsFile = ../../secrets.yaml;
|
||||
};
|
||||
|
||||
networking.useDHCP = false;
|
||||
|
||||
systemd.network = {
|
||||
|
|
@ -63,24 +58,6 @@ in
|
|||
Kind = "bridge";
|
||||
};
|
||||
};
|
||||
wg-upstream = {
|
||||
netdevConfig = {
|
||||
Kind = "wireguard";
|
||||
Name = "wg-upstream";
|
||||
};
|
||||
wireguardConfig = {
|
||||
PrivateKeyFile = config.sops.secrets.wg-upstream-private-key.path;
|
||||
FirewallMark = 51820;
|
||||
};
|
||||
wireguardPeers = lib.singleton {
|
||||
wireguardPeerConfig = with cfg.wg-upstream; {
|
||||
Endpoint = endpoint.full;
|
||||
PublicKey = publicKey;
|
||||
AllowedIPs = [ "0.0.0.0/0" "::0/0" ];
|
||||
PersistentKeepalive = 25;
|
||||
};
|
||||
};
|
||||
};
|
||||
};
|
||||
networks = {
|
||||
wan = {
|
||||
|
|
@ -115,66 +92,6 @@ in
|
|||
domains = [ cfg.domain ];
|
||||
address = [ "10.80.1.1/24" "fd00:80:1::1/64" ];
|
||||
};
|
||||
wg-upstream = {
|
||||
name = "wg-upstream";
|
||||
address = cfg.wg-upstream.addresses;
|
||||
routingPolicyRules = [
|
||||
{
|
||||
routingPolicyRuleConfig = {
|
||||
Family = "both"; # default is only ipv4
|
||||
FirewallMark = cfg.vpnBypassFwMark;
|
||||
InvertRule = "yes";
|
||||
Table = 51820;
|
||||
Priority = 10;
|
||||
#SuppressPrefixLength = 0; # can’t be used here (forwarding does not work with it)
|
||||
};
|
||||
}
|
||||
# FIXME: those two shouldn’t be necessary
|
||||
# It should automatically detect those routes existing and prioritise them
|
||||
# LAN (v4)
|
||||
{
|
||||
routingPolicyRuleConfig = {
|
||||
To = "10.80.1.0/24";
|
||||
Priority = 9;
|
||||
};
|
||||
}
|
||||
# LAN (v6)
|
||||
{
|
||||
routingPolicyRuleConfig = {
|
||||
To = "fd00:80:1::/64";
|
||||
Priority = 9;
|
||||
};
|
||||
}
|
||||
# wg-home
|
||||
{
|
||||
routingPolicyRuleConfig = {
|
||||
To = "10.80.0.0/24";
|
||||
Priority = 9;
|
||||
};
|
||||
}
|
||||
# plastic router
|
||||
{
|
||||
routingPolicyRuleConfig = {
|
||||
To = "192.168.0.0/24";
|
||||
Priority = 9;
|
||||
};
|
||||
}
|
||||
];
|
||||
routes = [
|
||||
{
|
||||
routeConfig = {
|
||||
Gateway = "0.0.0.0"; # point-to-point connection
|
||||
Table = 51820;
|
||||
};
|
||||
}
|
||||
{
|
||||
routeConfig = {
|
||||
Gateway = "::";
|
||||
Table = 51820;
|
||||
};
|
||||
}
|
||||
];
|
||||
};
|
||||
};
|
||||
};
|
||||
services.resolved.enable = false;
|
||||
|
|
|
|||
|
|
@ -10,11 +10,7 @@ let
|
|||
else lib.generators.mkValueStringDefault { } v;
|
||||
} " = ";
|
||||
|
||||
passthru = {
|
||||
WG_UPSTREAM_ENDPOINT_ADDRESS = cfg.wg-upstream.endpoint.address;
|
||||
WG_UPSTREAM_ENDPOINT_PORT = cfg.wg-upstream.endpoint.port;
|
||||
VPN_BYPASS_MARK = cfg.vpnBypassFwMark;
|
||||
};
|
||||
passthru = { };
|
||||
|
||||
defines = lib.concatStringsSep
|
||||
"\n"
|
||||
|
|
|
|||
|
|
@ -1,76 +1,21 @@
|
|||
define NAT_LAN_IFACES = { "br-lan" }
|
||||
define NAT_WAN_IFACES = { "wg-upstream" }
|
||||
define PHYSICAL_WAN = "enp1s0"
|
||||
define MASQUERADE_IFACES = { $NAT_WAN_IFACES, $PHYSICAL_WAN }
|
||||
define PLASTIC_ROUTER_V4 = 192.168.0.1
|
||||
define NAT_WAN_IFACES = { $PHYSICAL_WAN }
|
||||
|
||||
table inet filter {
|
||||
chain forward {
|
||||
type filter hook forward priority filter; policy drop
|
||||
|
||||
# Use MSS clamping
|
||||
# to avoid too large packets from client on the lan
|
||||
# not going through the tunnel.
|
||||
iifname wg-upstream tcp flags syn / syn,rst tcp option maxseg size set rt mtu
|
||||
oifname wg-upstream tcp flags syn / syn,rst tcp option maxseg size set rt mtu
|
||||
|
||||
# allow traffic between lan and wan
|
||||
iifname $NAT_LAN_IFACES oifname $NAT_WAN_IFACES counter accept
|
||||
iifname $NAT_WAN_IFACES oifname $NAT_LAN_IFACES ct state established,related counter accept
|
||||
|
||||
# accept responses on physical wan
|
||||
iifname $PHYSICAL_WAN oifname $NAT_LAN_IFACES ct state established,related counter accept
|
||||
|
||||
# allow selected destinations via physical wan
|
||||
|
||||
# plastic router
|
||||
iifname $NAT_LAN_IFACES oifname $PHYSICAL_WAN ip daddr $PLASTIC_ROUTER_V4 counter accept
|
||||
|
||||
# all destinations configured via policy based routing
|
||||
oifname $PHYSICAL_WAN mark $VPN_BYPASS_MARK counter accept
|
||||
}
|
||||
}
|
||||
|
||||
table inet nat {
|
||||
chain postrouting {
|
||||
type nat hook postrouting priority filter; policy accept
|
||||
oifname $MASQUERADE_IFACES masquerade
|
||||
}
|
||||
}
|
||||
|
||||
# Bypass VPN by setting mark.
|
||||
# This acts in two places that are handled separatly by nftables:
|
||||
# Packets from the local host (output hook) and forwared packets (prerouting hook).
|
||||
# To simplify the handling,
|
||||
# there is a single chain that handles both,
|
||||
# which is jumped to from the specific chains.
|
||||
table inet vpn-bypass {
|
||||
# This must be of type route, otherwise no route lookup will be performed
|
||||
chain output {
|
||||
type route hook output priority mangle
|
||||
jump common
|
||||
}
|
||||
|
||||
# This does not need to be of type route
|
||||
chain prerouting {
|
||||
type filter hook prerouting priority mangle
|
||||
jump common
|
||||
}
|
||||
|
||||
chain common {
|
||||
tcp dport {
|
||||
22, # SSH
|
||||
443, # HTTPS
|
||||
465, # SMTPS
|
||||
993, # IMAPS
|
||||
2022, # SSH
|
||||
2222, # SSH
|
||||
} mark set $VPN_BYPASS_MARK counter
|
||||
udp dport {
|
||||
1637, # wg
|
||||
51820, # wg
|
||||
64738, # mumble
|
||||
} mark set $VPN_BYPASS_MARK counter
|
||||
oifname $NAT_WAN_IFACES masquerade
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -96,20 +41,8 @@ table inet restrict-wan {
|
|||
chain postrouting {
|
||||
type filter hook postrouting priority 0; policy accept
|
||||
|
||||
# accept connections to plastic router
|
||||
oifname $PHYSICAL_WAN ip daddr $PLASTIC_ROUTER_V4 counter accept
|
||||
|
||||
# accept icmpv6
|
||||
oifname $PHYSICAL_WAN icmpv6 type { nd-neighbor-solicit, nd-router-advert, nd-neighbor-advert } accept
|
||||
|
||||
# accept connections to selected endpoints
|
||||
# VPN (wg-upstream)
|
||||
oifname $PHYSICAL_WAN ip daddr $WG_UPSTREAM_ENDPOINT_ADDRESS udp dport $WG_UPSTREAM_ENDPOINT_PORT counter accept # only this is used
|
||||
# destinations configured in VPN bypass
|
||||
oifname $PHYSICAL_WAN mark $VPN_BYPASS_MARK counter accept
|
||||
|
||||
# drop all other packets
|
||||
oifname $PHYSICAL_WAN counter drop
|
||||
# accept connections over physical wan
|
||||
oifname $PHYSICAL_WAN counter accept
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue