MikroTik RouterOS firewall provides stateful and stateless packet filtering, NAT, and advanced traffic classification to secure network data flow and prevent unauthorized access. It includes filter/raw, mangle, and nat modules with pre-defined chains for efficient rule management.
This page explains how data packets flow through MikroTik RouterOS, detailing the interaction between bridging, routing, MPLS decisions, and firewall chains. It includes diagrams illustrating packet processing stages from entry to exit points, along with descriptions of key components like routing tables and firewall chains.