I read it, but I don’t understand exactly what prerouting and postrouting are on Mikrotik?

Question

Computer networks

I read about postrouting prerouting but I can't help you, please can you explain it to me in simple language?

Answer 1

I recommend this picture to everyone, which shows how packets go through netfilter more clearly.
Here is a good article

Answer 2

Generations of admins have already grown up on this Article. In principle, it works in the same way on Linux, on Mikrotik, and on real routers (with some assumptions). It is important to understand that each packet passes through the network stack of the system through certain tables and chains. Packets are divided into transit, output and input for the system, each type has its own order.