By default, the MAC server operates on all interfaces. To restrict MAC connectivity from the WAN port, we'll disable the default all entry and insert a LAN interface. MikroTik Neighbor discovery protocol is used to display and understand other MikroTik routers inside the network. Disable neighbor discovery on public interfaces: https://winbox-web43210.dreamyblogs.com/29582756/what-does-h5-winbox-mean