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MikroTik RouterOS has very powerful firewall implementation with features including: stateful packet inspection. Layer-7 protocol detection. peer-to-peer protocols filtering. traffic classification by: source MAC address. IP addresses (network or list) and address types (broadcast, local, multicast, unicast) port or port range. IP protocols.
Manual:IP/Firewall. From MikroTik Wiki < Manual:IP. Jump to navigation Jump to search. List of reference sub-pages. Case studies. List of examples. IP/Firewall.
Summary. Sub-menu: /ip firewall nat. Network Address Translation is an Internet standard that allows hosts on local area networks to use one set of IP addresses for internal communications and another set of IP addresses for external communications. A LAN that uses NAT is referred as natted network.
Welcome to the MikroTik documentation wiki. Note: Our new documentation site can be found here: help.mikrotik.com/docs/. wiki.mikrotik.com is no longer being updated. MikroTik RouterOS. RouterOS software documentation. RouterBOARD hardware documentation. The Dude network monitoring utility for Windows. SwOS software for MikroTik switch products.
Summary. layer7-protocol is a method of searching for patterns in ICMP/TCP/UDP streams. Note: The L7 matcher is very resource intensive. Use this feature only for very specific traffic. It is not recommended to use L7 matcher for generic traffic, such as for blocking webpages.
Firewall. We strongly suggest to keep default firewall on. Here are few adjustment to make it more secure, make sure to apply the rules, when you understand what are they doing. IPv4 firewall to a router. work with new connections to decrease load on a router; create address-list for IP addresses, that are allowed to access your router;
Overview. From everything we have learned so far, let's try to build an advanced firewall. 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.
