
The Firewall provides features to make use of internal connection, routing and packet marks. It also supports Source and Destionation NAT (NetworkĪddress Translation), NAT helpers for popular applications and UPnP. RouterOS features a stateful firewall, which means that is performs stateful packet inspection and keeps track of the state of network connections traveling across it. Along with the Network Address Translation it serves for preventing unauthorized access to directly attached networks and the router itself as well as a filter for outgoing traffic.


The firewall implements packet filtering and thereby provides security functions, that are used to manage data flow to, from and through the router. New in RouterOS v4 is the Lua scripting language, which opens up a multitude of approaches in automation and programming of your router.

You can try RouterOS today, go to and download the installation CD image. RouterOS is a stand-alone operating system based on the Linux v2.6 kernel, and our goal here at MikroTik is to provide all these features with a quick and simple installation and an easy to use interface. It can also be installed on a PC and will turn it into a router with all the necessary features - routing, firewall, bandwidth management, wireless access point, backhaul link, hotspot gateway, VPN server and more.

MikroTik RouterOS is the operating system of MikroTik RouterBOARD hardware.
