Interface List Guide in MikroTik

    Interface lists have appeared in MikroTik RouterOS for quite some time, but by observation, not everyone knows about them and therefore does not use them.


    What is this is clear from the name - Interfaces List, the same as address lists (address list), only with interfaces. Not to be confused with bridges (bridge) and bounding interfaces, these are three different technologies for different tasks. This functionality appeared about a year ago and is present in all current (current and bugfix) releases of RouterOS 6.

    The main thing to remember is that the interfaces in the lists continue to be independent, traffic will not start going through them (as in the case of the bridge) and will not is parallelized (as is the case with bounding), here you find it funny, but there are clever people.

    Standard listings

    [Interfaces] -> [Interfaces List] -> [Lists]
    By default, there are three lists: all, none, dynamic. With the first two everything is clear, dynamic is currently filled in from certain ppp connections and Detect Internet.

    Console option:


    Creating your own list
    [Interfaces] -> [Interfaces List] -> [Lists] -> [+]
    name - name
    include - include interfaces from the specified list in the new list
    exclude - interfaces from the specified list are excluded from the new list

    Console option:


    Use example include
    Есть следующие интерфейсы для выхода в интернет:
    ether1-wan(real ip)
    ether2-wan(real ip)
    l2tp-vpn1(gray ip)
    l2tp-vpn2(gray ip)

    С первых двух, ожидаем входящие соединения из вне, со вторых если они и будут, то нас не интересуют.

    Интерфейсы ether1-wan и ether2-wan объединены в список wan. Зеленые линии.

    Интерфейсы l2tp-vpn1 и l2tp-vpn2 объединены в список vpn. Красные линии.

    Список inet содержит(include) в себе wan и vpn. Черные линии.

    Теперь в firewall можно разделить входящий(и проходящий со стороны wan/vpn) трафик с wan и vpn и написать отдельные правила, а исходящий(и проходящий в сторону wan/vpn) фильтровать вместе(там скорее всего будет банальный established, new) через inet.

    Пример топорный, но другого у меня нет.

    Adding Interfaces

    You can add any interfaces: ethernet, wlan, bridge, vlan, vpn, vif, ... Everything is done from the main menu [Interface Lists].

    Console option:

    add interface=ether1list=test

    Use in firewall filter

    The main application is to simplify the firewall rules, let's say you have a vpn hub and you need to tweak the rules for passing traffic cleverly, but do it as clearly as possible.


    Check in-interface, send to chain-1.
    In the chain-1, check out-interface, send to the chain-2.
    In the chain-2 we set up rules.

    And so for each interface. 4 connections - 8 rules, 8 connections - 16 rules. Are the connections dynamic? You can get out and use all ppp, throw in the chain-1, and then from the chain-1 return extra interface.


    Add all interfaces to one list and create one rule with the same in-interface-list and out-interface-list, which transfers them to chains with filtering rules. It has become noticeably shorter.

    In this scheme there is also a minus, if you look at “earlier”, then for each interface the address subnets that are expected on the interface are specified, you can drive all the interfaces into the address list, but the subnet addresses will no longer be clearly tied to the interfaces.

    Another example is that you have several providers and laziness for each duplicate rules:

    Use in firewall nat

    When the interface lists just appeared, on the mikrotik forum they complained about the work of the interface lists in nat, now they seem to fix it. I decided to investigate the

    Test booth:

    There are not enough addresses for the same scheme.


    Chain src-nat:
    * masquerade - it works. Depending on the output interface, substitutes the corresponding ip.
    * src-nat - works. Substitutes the specified ip only for the interface on which this ip is present.
    * same - works. Similarly with src-nat.

    Chain dst-nat:

    * redirect - works.
    * dst-nat - works. Including in combination with masquerade.
    * netmap - works. If you use it instead of dst-nat. When used as intended, it also works.

    Use in firewall mangle

    Works. For example, if you need to tag all incoming traffic from interfaces for queue tree.

    Use in vpn profiles

    We recall the example of regional vpn. A fifth region has been added and you add it with your hands to the interface list, or you can do it easier and in the vpn profile specify which list the interface will be placed on when you connect, regardless of whether there is a binding for it or it is created automatically when the client disconnects the interface from the list deleted. For outgoing vpn this also works.

    [PPP] -> [Profiles]

    Everything is good, but there is a bug (at the time of publication, version RoS 6.42.6). If you created a binding and statically added it to the list specified in profiles, the connection will not be established. In the logs (server) will be about the following:

    Use in bridge

    You can specify a list of interfaces as a bridge member, but only interfaces capable of working on Layer 2 (ethernet, wlan, bounding, eoip, ovpn-ethernet, ...) will be added, except for the other bridge.

    Detect internet

    The functionality appeared in the current firmware version and is not yet ready for use.
    [Interfaces] -> [Detect Intrnet]
    * Detect Interface List - a list with interfaces on which checks will be made.
    * LAN Interface List - a list to which all active layer2 interfaces are added. Get the status of lan.
    * WAN Interface List - a list to which all lte and vpn interfaces are added. Also, interfaces with the status of lan which do not have dhcp server and with which the address is available. In addition to everything, mikrotik will add to the dhcp client interface in attempts to get settings automatically.
    * Internet Interface List - a list of interfaces with the status of wan if…0000 is accessible from them. Rechecking every minute, after 3 unsuccessful attempts, the interface returns to wan status. Change the address of the check, or intervals can not be.

    [Interface Statuses] - check results.

    So it should work, but in practice requests are not sent to We are waiting and we hope that: they will fix it; remove restrictions; will add the ability to run scripts when the interface state changes.

    Spoiler header


    In the current MikroTik branch, it was decided that the Interface List should be used more actively and the following options are now configured via interface lists, instead of specific interfaces:
    * [IP] -> [Neighbors] -> [Discovery Settings]

    * [Tools] -> [MAC-Server] -> [Mac-Telnet Server] & [Mac-Winbox Server]

    After the update, do not forget to reconfigure.

    Scripts and cli

    You may encounter a situation where one of the interfaces in the list becomes unknown (if you remove the interface before deleting from the list) and personally I haven’t managed to find a simple way (without clearing the entire list and refilling) deleting such an interface using cli and scripts. If anyone knows - write in the comments.

    That's all. I hope the world will become less configurations with the union of interfaces in the bridge for the sake of reducing the rules in the firewall.

    Also popular now: