Mikrotik routers do not drop by default the local adressing?

RouterOS Beginner Basics
1

I’m reading Building Advanced Firewall - RouterOS - MikroTik Documentation

and it’s explain how add ip-list (range) of ip that can’t be forwarded..

is it not the default behavior on the WAN interface ?

Thanks.

2

Mikrotik has a default accept if no rule is hit.

Some devices will come with some firewall rules preconfigured, which might also contain a deny rule, but you will be able to see those in the IPv4/6->Firewall.

3

No it isn’t. Remember that some devices are preconfigured with quite decent set of rules but “big-toys” have almost none so you have create firewall by yourself according to you needs.