Mikrotik firewall chains. For example the packets that Wi...
Mikrotik firewall chains. For example the packets that Winbox generates back to you; or responses to the pings mentioned above. For example your packets to a Winbox or terminal session; or someone pinging you. The common three chains are: Input: Packets that are destined to the router itself. Understand the packet flow & Firewall Chains of the MikroTik RouterOS device with this step by step guide. I had OTX working as well but I hit it too much and reach limits fast. Aug 14, 2025 · In the next article, we’ll dive into more advanced rules that help defend against more sophisticated attacks, examine the Forward chain, and create custom chains. I’m confused about the firewall chains - what do they actually mean? I’d want to see some examples of how each chain is used. Feb 3, 2026 · The architecture of this firewall is designed around concepts such as chains, tables, and actions, enabling each packet to be inspected based on a wide range of criteria, including IP addresses, protocols, ports, and even Layer 7 (application-layer) content. It powers MikroTik hardware devices. Input Rules: Input rules apply to traffic destined for the router itself. Documentation applies for the latest stable RouterOS version. 02. Input and Output. Where are these two chains used? Thanks, and sorry if this topic has been covered before, but I couldn’t find anything. RouterOS is the operating system of MikroTik devices. com . Please someone to explain with an example for both Input and Output. mikrotik. Aug 18, 2025 · From everything we have learned so far, let's try to build an advanced firewall. Custom chains in the Mikrotik Firewall 17. Forward: Packets that pass through the router, but are going to some MikroTik Firewall Filter Rules: Chains Forward - Input - Output MA ICT 32. Also available in the documentation in PDF format for offline use (updated monthly). Jul 17, 2025 · Firewall filtering rules are grouped together in chains. Налаштування WireGuard VPN на MikroTik - архітектура та об'єднання мереж, конфігурація MikroTik Firewall, Routing, підключення Linux Peers та troubleshooting RouterOS RouterOS is a stand-alone operating system based on Linux kernel. In this firewall building example, we will try to use as many firewall features as we can to illustrate how they work and when they should be used the right way. I basically described how I created a pipeline to extract fields from Mikrotik Firewall logs and throw them at various functions such as geo ip lookups, reverse dns, spamhaus, tor exit nodes. Masih bingung bedain input, forward, dan output di firewall Mikrotik? Yuk kenalan sama yang namanya chain di filter rules! 🔥 #mikrotik #tips #networking #tkj #anakit #firewall #tutorial RouterOS Documentation This webpage contains the official RouterOS user manual. 8K subscribers Subscribed In the Firewall/NAT tab I saw two chains. Please someone to explain with an … Hello, I have a MikroTik router running RouterOS v6. Jul 25, 2024 · What is the chain and how does it work? It specifies the type of rule we are applying. 2017 Srdjan Stanisic MikroTik, Scripting, Security custom firewall chains, how-to, Mikrltik, RouterOS, Scripting In the Firewall/NAT tab I saw two chains. It allows a packet to be matched against one common criterion in one chain, and then passed over for processing against some other common criteria to another chain. Output: Packets that originate from the router itself. 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. 49. I read up on Mikrotik’s website to see what it was all about, but their explanation is vague to me. For example, a packet should be matched against the IP address:port pair. Would uploading a file apply to the output chain? And when is the forward chain used? And does “router’s addresses” mean an address the router has assigned to an interface? https://wiki. Learn about the various elements and details of the packet flow & firewall chains of MikroTik. I will demonstrate some common mistakes when creating filters to show you the importance of today’s topic. So I decided to ask here. I will go through MikroTik’s chains and packet flow. 2. js3u, 1wlpl, lkv6s, 5rzeug, 3son, hpdhua, sbjfod, 47dwx, wcrvqm, beawqr,