Mikrotik ban access to network or specific IP?

Question

Computer networks

Mikrotik is used as a gateway, how to deny a certain user access to a local network or to a certain IP address.

Answer 1

It depends what you mean by user. If the host, then through
but at the same time correctly configured other rules are necessary.
If the user is the user, then again the user of what?
Also, it's not clear what you mean by access "to the local network or to a specific address".

Answer 2

There is no single answer here. Blocking operations are performed in:
/ ip firewall filter
/ ip firewall raw
If you work with Mikrotiks, you will often need to refer to the Packet Flow Diagram . All the answers are there.

Answer 3

A specific user or a specific IP address? Mikrotik works at the level where there are no user logins - for this you need to set a proxy.

Answer 4

Winbox:
IP-Firewall-Filter rules