QUOTE(soonwai @ Mar 27 2018, 03:59 PM)
If your router can be seen from any of the management ports, your firewall configuration sucks.
In any of the tutorials i've done, despite not being complete i always block all input on WAN except for NTP and DNS to whitelisted servers. If you want to manage your mikrotik remotely, set up VPN on it and allow VPN because VPN does not interface with the OS directly, only the networking part so you can secure it. It is recommended to run your own internal VPN server (if you use ASUS as APs like i do, can use that too) but make sure that it is secured.
Never use blankets, always specify every access. So if you have an automated whitelist, make sure that the whitelist is specific in every way (service, ports, addresses). Dont allow input from google DNS for everything. only for specifics as an example. Not to mention that google does try to spy on you alongside many other servers so making sure they cant access your network is important even if its google or facebook as they're a pain when you set up an IPS as they always get blocked.
And use drop rather than deny as no response is better than unauthorised response.