ERR_CONNECTION_RESET in mikrotik?

Question

Computer networks

There is a mikrotik in a remote office connected via VPN ipsec.
On the 1st of the remote PCs, a web server is running behind mikrotik.
If you go to the web service via a direct IP, then everything works fine, but if you go through an external IP (ports are forwarded), it occasionally falls off in chrome ERR_CONNECTION_RESET displays such an error. tried all browsers

Answer 1

Problem solved. It happened because of the VPN connection.

Answer 2

Well, as it were, the question immediately arises, how to forward if there is a vpn / and vice versa.
From time to time - how often? (how many users work in this mode through forwarded ports?)
The best option is to sit with wireshark and sniff. (possible both on the server side and on the client side)