mirror
/
openwrt-packages
mirror of https://git.openwrt.org/feed/packages.git
1
0
Fork 0
Code Releases Activity
openwrt-packages/net/vpn-policy-routing/files
History
Stan Grishin 7bb2ccd4e1 vpn-policy-routing: support phys-dev policies 
Signed-off-by: Stan Grishin <stangri@melmac.net>
 		2020-05-04 22:47:32 +00:00
..
README.md vpn-policy-routing: support phys-dev policies 2020-05-04 22:47:32 +00:00
vpn-policy-routing.aws.user vpn-policy-routing: initial release 2019-12-30 07:40:25 -07:00
vpn-policy-routing.conf vpn-policy-routing: initial release 2019-12-30 07:40:25 -07:00
vpn-policy-routing.firewall.hotplug vpn-policy-routing: initial release 2019-12-30 07:40:25 -07:00
vpn-policy-routing.iface.hotplug vpn-policy-routing: initial release 2019-12-30 07:40:25 -07:00
vpn-policy-routing.init vpn-policy-routing: support phys-dev policies 2020-05-04 22:47:32 +00:00
vpn-policy-routing.netflix.user vpn-policy-routing: initial release 2019-12-30 07:40:25 -07:00

README.md

VPN Policy-Based Routing

Description

This service allows you to define rules (policies) for routing traffic via WAN or your L2TP, Openconnect, OpenVPN, PPTP or Wireguard tunnels. Policies can be set based on any combination of local/remote ports, local/remote IPv4 or IPv6 addresses/subnets or domains. This service supersedes the VPN Bypass available on GitHub/jsDelivr service, by supporting IPv6 and by allowing you to set explicit rules not just for WAN interface (bypassing OpenVPN tunnel), but for L2TP, Openconnect, OpenVPN, PPTP and Wireguard tunnels as well.

Features

Gateways/Tunnels

  • Any policy can target either WAN or a VPN tunnel interface.
  • L2TP tunnels supported (with protocol names l2tp*).
  • Openconnect tunnels supported (with protocol names openconnect*).
  • OpenVPN tunnels supported (with device names tun* or tap*).1 2
  • PPTP tunnels supported (with protocol names pptp*).
  • Wireguard tunnels supported (with protocol names wireguard*).

IPv4/IPv6/Port-Based Policies

  • Policies based on local names, IPs or subnets. You can specify a single IP (as in 192.168.1.70) or a local subnet (as in 192.168.1.81/29) or a local device name (as in nexusplayer). IPv6 addresses are also supported.
  • Policies based on local ports numbers. Can be set as an individual port number (32400), a range (5060-5061), a space-separated list (80 8080) or a combination of the above (80 8080 5060-5061). Limited to 15 space-separated entries per policy.
  • Policies based on remote IPs/subnets or domain names. Same format/syntax as local IPs/subnets.
  • Policies based on remote ports numbers. Same format/syntax and restrictions as local ports.
  • You can mix the IP addresses/subnets and device (or domain) names in one field separating them by space (like this: 66.220.2.74 he.net tunnelbroker.net).
  • See Policy Options section for more information.

Domain-Based Policies

  • Policies based on (remote) domain names can be processed in different ways, please review the Policy Options section and Footnotes/Known Issues section, specifically #5 and any other information in that section relevant to domain-based routing/DNS.

Physical Device Policies

  • Policies based on a local physical device (like a specially created wlan), please review the Policy Options section and Footnotes/Known Issues section, specifically #6 and any other information in that section relevant to handling physical device.

DSCP Tag-Based Policies

You can also set policies for traffic with specific DSCP tag. On Windows 10, for example, you can mark traffic from specific apps with DSCP tags (instructions for tagging specific app traffic in Windows 10 can be found here).

Custom User Files

If the custom user file includes are set, the service will load and execute them after setting up ip tables and ipsets and processing policies. This allows, for example, to add large numbers of domains/IP addresses to ipsets without manually adding all of them to the config file.

Two example custom user-files are provided: /etc/vpn-policy-routing.aws.user and /etc/vpn-policy-routing.netflix.user. They are provided to pull the AWS and Netflix IP addresses into the wan ipset respectively.

Strict Enforcement

  • Supports strict policy enforcement, even if the policy interface is down -- resulting in network being unreachable for specific policy (enabled by default).

Use DNSMASQ ipset

  • Service can be set to utilize dnsmasq's ipset support, which requires the dnsmasq-full package to be installed (see How to install dnsmasq-full). This significantly improves the start up time because dnsmasq resolves the domain names and adds them to appropriate ipset in background. Another benefit of using dnsmasq's ipset is that it also automatically adds third-level domains to the ipset: if domain.com is added to the policy, this policy will affect all *.domain.com subdomains. This also works for top-level domains as well, a policy targeting the at for example, will affect all the *.at domains.
  • Please review the Footnotes/Known Issues section, specifically #5 and any other information in that section relevant to domain-based routing/DNS.

Customization

  • Can be fully configured with uci commands or by editing /etc/config/vpn-policy-routing file.
  • Has a companion package (luci-app-vpn-policy-routing) so policies can be configured with Web UI.

Other Features

  • Doesn't stay in memory, creates the routing tables and iptables rules/ipset entries which are automatically updated when supported/monitored interface changes.
  • Proudly made in 🍁 Canada 🍁 , using locally-sourced electrons.

Screenshots (luci-app-vpn-policy-routing)

Service Status screenshot

Configuration - Basic Configuration screenshot

Configuration - Advanced Configuration screenshot

Configuration - WebUI Configuration screenshot

Policies screenshot

DSCP Tagging screenshot

Custom User File Includes screenshot

How It Works

On start, this service creates routing tables for each supported interface (WAN/WAN6 and VPN tunnels) which are used to route specially marked packets. For the mangle table's PREROUTING, FORWARD, INPUT and OUTPUT chains, the service creates corresponding VPR_* chains to which policies are assigned. Evaluation and marking of packets happen in these VPR_* chains. If enabled, the service also creates the remote/local ipsets per each supported interface and the corresponding iptables rule for marking packets matching the ipset. The service then processes the user-created policies.

Processing Policies

Each policy can result in either a new iptables rule or, if src_ipset or dest_ipset are enabled, an ipset or a dnsmasq's ipset entry.

  • Policies with local MAC-addresses, IP addresses or local device names can be created as iptables rules or ipset entries.
  • Policies with local or remote ports are always created as iptables rules.
  • Policies with local or remote netmasks can be created as iptables rules or ipset entries.
  • Policies with only remote IP address or a domain name can be created as iptables rules or dnsmasq's ipset or an ipset (if enabled).

Policies Priorities

  • If support for src_ipset and dest_ipset is disabled, then only iptables rules are created. The policy priority is the same as its order as listed in Web UI and /etc/config/vpn-policy-routing. The higher the policy is in the Web UI and configuration file, the higher its priority is.
  • If support for src_ipset and dest_ipset is enabled, then the ipset entries have the highest priority (irrelevant of their position in the policies list) and the other policies are processed in the same order as they are listed in Web UI and /etc/config/vpn-policy-routing.
  • If there are conflicting ipset entries for different interfaces, the priority is given to the interface which is listed first in the /etc/config/network file.
  • If set, the DSCP policies trump all other policies, including the ipset ones.

How To Install

Please make sure that the requirements are satisfied and install vpn-policy-routing and luci-app-vpn-policy-routing from Web UI or connect to your router via ssh and run the following commands:

opkg update
opkg install vpn-policy-routing luci-app-vpn-policy-routing

If these packages are not found in the official feed/repo for your version of OpenWrt/LEDE Project, you will need to add a custom repo to your router following instructions on GitHub/jsDelivr first.

Requirements

This service requires the following packages to be installed on your router: ipset, resolveip, ip-full (or a busybox built with ip support), kmod-ipt-ipset and iptables.

To satisfy the requirements, connect to your router via ssh and run the following commands:

opkg update; opkg install ipset resolveip ip-full kmod-ipt-ipset iptables

How to install dnsmasq-full

If you want to use dnsmasq's ipset support, you will need to install dnsmasq-full instead of the dnsmasq. To do that, connect to your router via ssh and run the following command:

opkg update; opkg remove dnsmasq; opkg install dnsmasq-full;

Unmet dependencies

If you are running a development (trunk/snapshot) build of OpenWrt on your router and your build is outdated (meaning that packages of the same revision/commit hash are no longer available and when you try to satisfy the requirements you get errors), please flash either current OpenWrt release image or current development/snapshot image.

Service Configuration Settings

As per screenshots above, in the Web UI the vpn-policy-routing configuration is split into Basic, Advanced and WebUI settings. The full list of configuration parameters of vpn-policy-routing.config section is:

Web UI Section Parameter Type Default Description
Basic enabled boolean 0 Enable/disable the vpn-policy-routing service.
Basic verbosity integer 2 Can be set to 0, 1 or 2 to control the console and system log output verbosity of the vpn-policy-routing service.
Basic strict_enforcement boolean 1 Enforce policies when their interface is down. See Strict enforcement for more details.
Basic dest_ipset string none Enable/disable use of one of the ipset options for compatible remote policies (policies with only a remote hostname and no other fields set). This speeds up service start-up and operation. Currently supported options are none, ipset and dnsmasq.ipset (see Use DNSMASQ ipset for more details). Make sure the requirements are met.
Basic src_ipset boolean 0 Enable/disable use of ipset entries for compatible local policies (policies with only a local IP address or MAC address and no other fields set). Using ipset for local IPs/MACs is faster than using iptables rules, however it makes it impossible to enforce policies priority/order. Make sure the requirements are met.
Basic ipv6_enabled boolean 0 Enable/disable IPv6 support.
Advanced supported_interface list/string Allows to specify the space-separated list of interface names (in lower case) to be explicitly supported by the vpn-policy-routing service. Can be useful if your OpenVPN tunnels have dev option other than tun* or tap*.
Advanced ignored_interface list/string Allows to specify the space-separated list of interface names (in lower case) to be ignored by the vpn-policy-routing service. Can be useful if running both VPN server and VPN client on the router.
Advanced boot_timeout number 30 Allows to specify the time (in seconds) for vpn-policy-routing service to wait for WAN gateway discovery on boot. Can be useful on devices with ADSL modem built in.
Advanced iptables_rule_option append/insert append Allows to specify the iptables parameter for rules: -A for append and -I for insert. Append is generally speaking more compatible with other packages/firewall rules. Recommended to change to insert only to enable compatibility with the mwan3 package.
Advanced iprule_enabled boolean 0 Add an ip rule, not an iptables entry for policies with just the local address. Use with caution to manipulate policies priorities.
Advanced icmp_interface string Set the default ICMP protocol interface (interface name in lower case). Use with caution.
Advanced append_src_rules string Append local IP Tables rules. Can be used to exclude local IP addresses from destinations for policies with local address set.
Advanced append_dest_rules string Append local IP Tables rules. Can be used to exclude remote IP addresses from sources for policies with remote address set.
Advanced wan_tid integer 201 Starting (WAN) Table ID number for tables created by the vpn-policy-routing service.
Advanced wan_mark hexadecimal 0x010000 Starting (WAN) fw mark for marks used by the vpn-policy-routing service. High starting mark is used to avoid conflict with SQM/QoS, this can be changed by user. Change with caution together with fw_mask.
Advanced fw_mask hexadecimal 0xff0000 FW Mask used by the vpn-policy-routing service. High mask is used to avoid conflict with SQM/QoS, this can be changed by user. Change with caution together with wan_mark.
Web UI webui_enable_column boolean 0 Shows Enable checkbox column for policies, allowing to quickly enable/disable specific policy without deleting it.
Web UI webui_protocol_column boolean 0 Shows Protocol column for policies, allowing to specify the protocol for iptables rules for policies.
Web UI webui_supported_protocol list 0 List of protocols to display in the Protocol column for policies.
Web UI webui_chain_column boolean 0 Shows Chain column for policies, allowing to specify PREROUTING (default), FORWARD, INPUT, or OUTPUT chain for iptables rules for policies.
Web UI webui_sorting boolean 1 Shows the Up/Down buttons for policies, allowing you to move a policy up or down in the list/priority.
wan_dscp integer Allows use of DSCP-tag based policies for WAN interface.
{interface_name}_dscp integer Allows use of DSCP-tag based policies for a VPN interface.

Default Settings

Default configuration has service disabled (use Web UI to enable/start service or run uci set vpn-policy-routing.config.enabled=1; uci commit vpn-policy-routing;).

Policy Options

Each policy may have a combination of the options below, the name and interface options are required.

The src_addr, src_port, dest_addr and dest_port options supports parameter negation, for example if you want to exclude remote port 80 from the policy, set dest_port="!80" (notice lack of space between ! and parameter).

Option Default Description
name Policy name, it must be set.
enabled 1 Enable/disable policy. To display the Enable checkbox column for policies in the WebUI, make sure to select Enabled for Show Enable Column in the Web UI tab.
interface Policy interface, it must be set.
src_addr List of space-separated local/source IP addresses, CIDRs, hostnames or mac addresses (colon-separated). You can also specify a local physical device (like a specially created wlan) prepended by an @ symbol.
src_port List of space-separated local/source ports or port-ranges.
dest_addr List of space-separated remote/target IP addresses, CIDRs or hostnames/domain names.
dest_port List of space-separated remote/target ports or port-ranges.
proto auto Policy protocol, can be any valid protocol from /etc/protocols for CLI/uci or can be selected from the values set in webui_supported_protocol. To display the Protocol column for policies in the WebUI, make sure to select Enabled for Show Protocol Column in the Web UI tab.
Special cases: auto will try to intelligently insert protocol-agnostic policy and fall back to TCP/UDP if the protocol must be selected for specific policy; all will always insert a protocol-agnostic policy (which may fail depending on the policy).
chain PREROUTING Policy chain, can be either PREROUTING, FORWARDING, INPUT or OUTPUT. This setting is case-sensitive. To display the Chain column for policies in the WebUI, make sure to select Enabled for Show Chain Column in the Web UI tab.

Custom User Files Include Options

Option Default Description
path Path to a custom user file (in a form of shell script), it must be set.
enabled 1 Enable/disable setting.

Example Policies

Single IP, IP Range, Local Machine, Local MAC Address

The following policies route traffic from a single IP address, a range of IP addresses, a local machine (requires definition as DHCP host record in DHCP config), a MAC-address of a local device and finally all of the above via WAN.

config policy
  option name 'Local IP'
  option interface 'wan'
  option src_addr '192.168.1.70'

config policy
  option name 'Local Subnet'
  option interface 'wan'
  option src_addr '192.168.1.81/29'

config policy
  option name 'Local Machine'
  option interface 'wan'
  option src_addr 'dell-ubuntu'

config policy
  option name 'Local MAC Address'
  option interface 'wan'
  option src_addr '00:0F:EA:91:04:08'

config policy
  option name 'Local Devices'
  option interface 'wan'
  option src_addr '192.168.1.70 192.168.1.81/29 dell-ubuntu 00:0F:EA:91:04:08'

Logmein Hamachi

The following policy routes LogMeIn Hamachi zero-setup VPN traffic via WAN.

config policy
  option name 'LogmeIn Hamachi'
  option interface 'wan'
  option dest_addr '25.0.0.0/8 hamachi.cc hamachi.com logmein.com'

SIP Port

The following policy routes standard SIP port traffic via WAN for both TCP and UDP protocols.

config policy
  option name 'SIP Ports'
  option interface 'wan'
  option dest_port '5060'
  option proto 'tcp udp'

Plex Media Server

The following policies route Plex Media Server traffic via WAN. Please note, you'd still need to open the port in the firewall either manually or with the UPnP.

config policy
  option name 'Plex Local Server'
  option interface 'wan'
  option src_port '32400'

config policy
  option name 'Plex Remote Servers'
  option interface 'wan'
  option dest_addr 'plex.tv my.plexapp.com'

Emby Media Server

The following policy route Emby traffic via WAN. Please note, you'd still need to open the port in the firewall either manually or with the UPnP.

config policy
  option name 'Emby Local Server'
  option interface 'wan'
  option src_port '8096 8920'

config policy
  option name 'Emby Remote Servers'
  option interface 'wan'
  option dest_addr 'emby.media app.emby.media tv.emby.media'

Local OpenVPN Server + OpenVPN Client (Scenario 1)

If the OpenVPN client on your router is used as default routing (for the whole internet), make sure your settings are as following (three dots on the line imply other options can be listed in the section as well).

Relevant part of /etc/config/vpn-policy-routing:

config vpn-policy-routing 'config'
  list ignored_interface 'vpnserver'
  ...

config policy
  option name 'OpenVPN Server'
  option interface 'wan'
  option proto 'tcp'
  option src_port '1194'
  option chain 'OUTPUT'

The network/firewall/openvpn settings are below.

Relevant part of /etc/config/network (DO NOT modify default OpenWrt network settings for neither wan nor lan):

config interface 'vpnclient'
  option proto 'none'
  option ifname 'ovpnc0'

config interface 'vpnserver'
  option proto 'none'
  option ifname 'ovpns0'
  option auto '1'

Relevant part of /etc/config/firewall (DO NOT modify default OpenWrt firewall settings for neither wan nor lan):

config zone
  option name 'vpnclient'
  option network 'vpnclient'
  option input 'REJECT'
  option forward 'ACCEPT'
  option output 'REJECT'
  option masq '1'
  option mtu_fix '1'

config forwarding
  option src 'lan'
  option dest 'vpnclient'

config zone
  option name 'vpnserver'
  option network 'vpnserver'
  option input 'ACCEPT'
  option forward 'REJECT'
  option output 'ACCEPT'
  option masq '1'

config forwarding
  option src 'vpnserver'
  option dest 'wan'

config forwarding
  option src 'vpnserver'
  option dest 'lan'

config forwarding
  option src 'vpnserver'
  option dest 'vpnclient'

config rule
  option name 'Allow-OpenVPN-Inbound'
  option target 'ACCEPT'
  option src '*'
  option proto 'tcp'
  option dest_port '1194'

Relevant part of /etc/config/openvpn:

config openvpn 'vpnclient'
  option client '1'
  option dev_type 'tun'
  option dev 'ovpnc0'
  option proto 'udp'
  option remote 'some.domain.com 1197' # DO NOT USE PORT 1194 for VPN Client
  ...

config openvpn 'vpnserver'
  option port '1194'
  option proto 'tcp'
  option server '192.168.200.0 255.255.255.0'
  ...

Local OpenVPN Server + OpenVPN Client (Scenario 2)

If the OpenVPN client is not used as default routing and you create policies to selectively use the OpenVPN client, make sure your settings are as following (three dots on the line imply other options can be listed in the section as well).

Relevant part of /etc/config/vpn-policy-routing:

config vpn-policy-routing 'config'
  list ignored_interface 'vpnserver'
  option append_src_rules '! -d 192.168.200.0/24'
  ...

The network/firewall/openvpn settings are below.

Relevant part of /etc/config/network (DO NOT modify default OpenWrt network settings for neither wan nor lan):

config interface 'vpnclient'
  option proto 'none'
  option ifname 'ovpnc0'

config interface 'vpnserver'
  option proto 'none'
  option ifname 'ovpns0'
  option auto '1'

Relevant part of /etc/config/firewall (DO NOT modify default OpenWrt firewall settings for neither wan nor lan):

config zone
  option name 'vpnclient'
  option network 'vpnclient'
  option input 'REJECT'
  option forward 'ACCEPT'
  option output 'REJECT'
  option masq '1'
  option mtu_fix '1'

config forwarding
  option src 'lan'
  option dest 'vpnclient'

config zone
  option name 'vpnserver'
  option network 'vpnserver'
  option input 'ACCEPT'
  option forward 'REJECT'
  option output 'ACCEPT'
  option masq '1'

config forwarding
  option src 'vpnserver'
  option dest 'wan'

config forwarding
  option src 'vpnserver'
  option dest 'lan'

config forwarding
  option src 'vpnserver'
  option dest 'vpnclient'

config rule
  option name 'Allow-OpenVPN-Inbound'
  option target 'ACCEPT'
  option src '*'
  option proto 'tcp'
  option dest_port '1194'

Relevant part of /etc/config/openvpn:

config openvpn 'vpnclient'
  option client '1'
  option dev_type 'tun'
  option dev 'ovpnc0'
  option proto 'udp'
  option remote 'some.domain.com 1197' # DO NOT USE PORT 1194 for VPN Client
  list pull_filter 'ignore "redirect-gateway"' # for OpenVPN 2.4 and later
  option route_nopull '1' # for OpenVPN earlier than 2.4
  ...

config openvpn 'vpnserver'
  option port '1194'
  option proto 'tcp'
  option server '192.168.200.0 255.255.255.0'
  ...

Local Wireguard Server + Wireguard Client (Scenario 1)

Yes, I'm aware that technically there are no clients nor servers in Wireguard, it's all peers, but for the sake of README readability I will use the terminology similar to the OpenVPN Server + Client setups.

If the Wireguard tunnel on your router is used as default routing (for the whole internet), make sure your settings are as following (three dots on the line imply other options can be listed in the section as well).

Relevant part of /etc/config/vpn-policy-routing:

config vpn-policy-routing 'config'
  list ignored_interface 'wgserver'
  ...

config policy
  option name 'Wireguard Server'
  option interface 'wan'
  option proto 'udp'
  option src_port '61820'
  option chain 'OUTPUT'

The recommended network/firewall settings are below.

Relevant part of /etc/config/network (DO NOT modify default OpenWrt network settings for neither wan nor lan):

config interface 'wgclient'
  option proto 'wireguard'
  ...

config wireguard_wgclient
  list allowed_ips '0.0.0.0/0'
  list allowed_ips '::0/0'
  option endpoint_port '51820'
  option route_allowed_ips '1'
  ...

config interface 'wgserver'
  option proto 'wireguard'
  option listen_port '61820'
  list addresses '192.168.200.1'
  ...

config wireguard_wgserver
  list allowed_ips '192.168.200.2/32'
  option route_allowed_ips '1'
  ...

Relevant part of /etc/config/firewall (DO NOT modify default OpenWrt firewall settings for neither wan nor lan):

config zone
  option name 'wgclient'
  option network 'wgclient'
  option input 'REJECT'
  option forward 'ACCEPT'
  option output 'REJECT'
  option masq '1'
  option mtu_fix '1'

config forwarding
  option src 'lan'
  option dest 'wgclient'

config zone
  option name 'wgserver'
  option network 'wgserver'
  option input 'ACCEPT'
  option forward 'REJECT'
  option output 'ACCEPT'
  option masq '1'

config forwarding
  option src 'wgserver'
  option dest 'wan'

config forwarding
  option src 'wgserver'
  option dest 'lan'

config forwarding
  option src 'wgserver'
  option dest 'wgclient'

config rule
  option name 'Allow-WG-Inbound'
  option target 'ACCEPT'
  option src '*'
  option proto 'udp'
  option dest_port '61820'

Local Wireguard Server + Wireguard Client (Scenario 2)

Yes, I'm aware that technically there are no clients nor servers in Wireguard, it's all peers, but for the sake of README readability I will use the terminology similar to the OpenVPN Server + Client setups.

If the Wireguard client is not used as default routing and you create policies to selectively use the Wireguard client, make sure your settings are as following (three dots on the line imply other options can be listed in the section as well).

Relevant part of /etc/config/vpn-policy-routing:

config vpn-policy-routing 'config'
  list ignored_interface 'wgserver'
  option append_src_rules '! -d 192.168.200.0/24'
  ...

The recommended network/firewall settings are below.

Relevant part of /etc/config/network (DO NOT modify default OpenWrt network settings for neither wan nor lan):

config interface 'wgclient'
  option proto 'wireguard'
  ...

config wireguard_wgclient
  list allowed_ips '0.0.0.0/0'
  list allowed_ips '::0/0'
  option endpoint_port '51820'
  ...

config interface 'wgserver'
  option proto 'wireguard'
  option listen_port '61820'
  list addresses '192.168.200.1/24'
  ...

config wireguard_wgserver
  list allowed_ips '192.168.200.2/32'
  option route_allowed_ips '1'
  ...

Relevant part of /etc/config/firewall (DO NOT modify default OpenWrt firewall settings for neither wan nor lan):

config zone
  option name 'wgclient'
  option network 'wgclient'
  option input 'REJECT'
  option forward 'ACCEPT'
  option output 'REJECT'
  option masq '1'
  option mtu_fix '1'

config forwarding
  option src 'lan'
  option dest 'wgclient'

config zone
  option name 'wgserver'
  option network 'wgserver'
  option input 'ACCEPT'
  option forward 'REJECT'
  option output 'ACCEPT'
  option masq '1'

config forwarding
  option src 'wgserver'
  option dest 'wan'

config forwarding
  option src 'wgserver'
  option dest 'lan'

config forwarding
  option src 'wgserver'
  option dest 'wgclient'

config rule
  option name 'Allow-WG-Inbound'
  option target 'ACCEPT'
  option src '*'
  option proto 'udp'
  option dest_port '61820'

Netflix Domains

The following policy should route US Netflix traffic via WAN. For capturing international Netflix domain names, you can refer to the getdomainnames.sh-specific instructions on GitHub/jsDelivr and don't forget to adjust them for OpenWrt. This may not work if Netflix changes things. For more reliable US Netflix routing you may want to consider using custom user files.

config policy
  option name 'Netflix Domains'
  option interface 'wan'
  option dest_addr 'amazonaws.com netflix.com nflxext.com nflximg.net nflxso.net nflxvideo.net dvd.netflix.com'

Example Custom User Files Includes

config include
  option path '/etc/vpn-policy-routing.netflix.user'

config include
  option path '/etc/vpn-policy-routing.aws.user'

Basic OpenVPN Client Config

There are multiple guides online on how to configure the OpenVPN client on OpenWrt "the easy way", and they usually result either in a kill-switch configuration or configuration where the OpenVPN tunnel cannot be properly (and separately from WAN) routed, either way, incompatible with the VPN Policy-Based Routing.

Below is the sample OpenVPN client configuration for OpenWrt which is guaranteed to work. If you have already deviated from the instructions below (ie: made any changes to any of the wan or lan configurations in either /etc/config/network or /etc/config/firewall), you will need to start from scratch with a fresh OpenWrt install.

Relevant part of /etc/config/vpn-policy-routing:

config vpn-policy-routing 'config'
  list supported_interface 'vpnc'
  ...

The recommended network/firewall settings are below.

Relevant part of /etc/config/network (DO NOT modify default OpenWrt network settings for neither wan nor lan):

config interface 'vpnc'
  option proto 'none'
  option ifname 'ovpnc0'

Relevant part of /etc/config/firewall (DO NOT modify default OpenWrt firewall settings for neither wan nor lan):

config zone
  option name 'vpnc'
  option network 'vpnc'
  option input 'REJECT'
  option forward 'REJECT'
  option output 'ACCEPT'
  option masq '1'
  option mtu_fix '1'

config forwarding
  option src 'lan'
  option dest 'vpnc'

If you have a Guest Network, add the following to the /etc/config/firewall:

config forwarding
  option src 'guest'
  option dest 'vpnc'

Relevant part of /etc/config/openvpn (configure the rest of the client connection for your specifics by either referring to an existing .ovpn file or thru the OpenWrt uci settings):

config openvpn 'vpnc'
  option enabled '1'
  option client '1'
  option dev_type 'tun'
  option dev 'ovpnc0'
  ...

Footnotes/Known Issues

  1. See note about multiple OpenVPN clients.

  2. If your OpenVPN interface has the device name different from tun* or tap*, is not up and is not explicitly listed in supported_interface option, it may not be available in the policies Interface drop-down within WebUI.

  3. If your default routing is set to the VPN tunnel, then the true WAN interface cannot be discovered using OpenWrt built-in functions, so service will assume your network interface ending with or starting with wan is the true WAN interface.

  4. The service does NOT support the "killswitch" router mode (where if you stop the VPN tunnel, you have no internet connection). For proper operation, leave all the default OpenWrt network and firewall settings for lan and wan intact.

  5. When using the dnsmasq.ipset option, please make sure to flush the DNS cache of the local devices, otherwise domain policies may not work until you do. If you're not sure how to flush the DNS cache (or if the device/OS doesn't offer an option to flush its DNS cache), reboot your local devices when starting to use the service and/or when connecting data-capable device to your WiFi.

  6. When using the policies targeting physical devices, make sure you have the following packages installed: kmod-br-netfilter, kmod-ipt-physdev and iptables-mod-physdev.

Multiple OpenVPN Clients

If you use multiple OpenVPN clients on your router, the order in which their devices are named (tun0, tun1, etc) is not guaranteed by OpenWrt/LEDE Project. The following settings are recommended in this case.

For /etc/config/network:

config interface 'vpnclient0'
  option proto 'none'
  option ifname 'ovpnc0'

config interface 'vpnclient1'
  option proto 'none'
  option ifname 'ovpnc1'

For /etc/config/openvpn:

config openvpn 'vpnclient0'
  option client '1'
  option dev_type 'tun'
  option dev 'ovpnc0'
  ...

config openvpn 'vpnclient1'
  option client '1'
  option dev_type 'tun'
  option dev 'ovpnc1'
  ...

For /etc/config/vpn-policy-routing:

config vpn-policy-routing 'config'
  list supported_interface 'vpnclient0 vpnclient1'
  ...

A Word About Default Routing

Service does not alter the default routing. Depending on your VPN tunnel settings (and settings of the VPN server you are connecting to), the default routing might be set to go via WAN or via VPN tunnel. This service affects only routing of the traffic matching the policies. If you want to override default routing, follow the instructions below.

OpenVPN tunnel configured via uci (/etc/config/openvpn)

Set the following to the appropriate section of your /etc/config/openvpn:

  • For OpenVPN 2.4 and newer client config:

    list pull_filter 'ignore "redirect-gateway"'

  • For OpenVPN 2.3 and older client config:

    option route_nopull '1'

  • For your Wireguard (client) config:

    option route_allowed_ips '0'

OpenVPN tunnel configured with .ovpn file

Set the following to the appropriate section of your .ovpn file:

  • For OpenVPN 2.4 and newer client .ovpn file:

    pull_filter 'ignore "redirect-gateway"'

  • For OpenVPN 2.3 and older client .ovpn file:

    route_nopull '1'

Wireguard tunnel

  • For your Wireguard (client) config:

    option route_allowed_ips '0'

  • Routing Wireguard traffic may require setting net.ipv4.conf.wg0.rp_filter = 2 in /etc/sysctl.conf. Please refer to issue #41 for more details.

A Word About HTTP/3 (QUICK)

If you want to target traffic using HTTP/3 protocol, you can use the AUTO as the protocol (the policy will be either protocol-agnostic or TCP/UDP) or explicitly use UDP as a protocol.

A Word About DNS-over-HTTPS

Some browsers, like Mozilla Firefox or Google Chrome/Chromium have DNS-over-HTTPS proxy built-in. Their requests to web-sites cannot be affected if the dnsmasq.ipset is set for the dest_ipset option. To fix this, you can try either of the following:

  1. Disable the DNS-over-HTTPS support in your browser and use the OpenWrt's net/https-dns-proxy (README on GitHub/jsDelivr) package with optional https-dns-proxy WebUI/luci app. You can then continue to use dnsmasq.ipset setting for the dest_ipset in VPN Policy Routing.

  2. Continue using DNS-over-HTTPS in your browser (which, by the way, also limits your options for router-level AdBlocking as described in dnsmasq.ipset option description here of net/simple-adblock README on GitHub/jsDelivr), you than would either have to disable the dest_ipset or switch it to ipset. Please note, you will lose all the benefits of dnsmasq.ipset option.

A Word About Cloudflare's 1.1.1.1 App

Cloudflare has released an app for iOS and Android, which can also be configured to route traffic thru their own VPN tunnel (WARP+).

If you use Cloudlfare's VPN tunnel (WARP+), none of the policies you set up with the VPN Policy Routing will take effect on your mobile device. Disable WARP+ for your home WiFi to keep VPN Policy Routing affecting your mobile device.

If you just use the private DNS queries (WARP), A Word About DNS-over-HTTPS applies. You can also disable WARP for your home WiFi to keep VPN Policy Routing affecting your mobile device.

Discussion

Please head to OpenWrt Forum for discussions of this service.

Getting Help

If things are not working as intended, please include the following in your post:

  • content of /etc/config/dhcp
  • content of /etc/config/firewall
  • content of /etc/config/network
  • content of /etc/config/vpn-policy-routing
  • the output of /etc/init.d/vpn-policy-routing support
  • the output of /etc/init.d/vpn-policy-routing reload with verbosity setting set to 2

If you don't want to post the /etc/init.d/vpn-policy-routing support output in a public forum, there's a way to have the support details automatically uploaded to my account at paste.ee by running: /etc/init.d/vpn-policy-routing support -p. You need to have the following packages installed to enable paste.ee upload functionality: curl libopenssl ca-bundle.

WARNING: while paste.ee uploads are unlisted/not indexed at the web-site, they are still publicly available.

Thanks

I'd like to thank everyone who helped create, test and troubleshoot this service. Without contributions from @hnyman, @dibdot, @danrl, @tohojo, @cybrnook, @nidstigator, @AndreBL, @dz0ny, rigorous testing/bugreporting by @dziny, @bluenote73, @buckaroo, @Alexander-r, n8v8R, psherman, @Vale-max, multiple contributions from dl12345 and trendy and feedback from other OpenWrt users it wouldn't have been possible. Wireguard/IPv6 support is courtesy of Mullvad and IVPN.