How to transfer a remote office with an account in AD?

Question

System administration

There is CD and Kerio (DHCP,AD,DNS) with level 2 switches (local office) SNR.
There is a remote office for 20 users on a TP-Link router, will it be enough for a secure channel if you organize a VPN Tunnel on kerio and connect from a remote office using Kerio VPN Client, and also if you create an account for a remote office on a CD, you can use it then control (such as changing the password, watching which files under which account are open, for example)?
Or offer your option for connecting a remote office to the head office.

Answer 1

For 20 people, a simple connection of networks via VPN is enough, though I don’t know how Tupolink will digest it, but I think you can try it.

Answer 2

There is no need to organize point-to-site vpn from a remote office via kerio vpn client.
Create a site-to-site vpn from a TPlink router (if it can) on Kerio, configure subnet routing and you can use the Domain Controller at the head office.