Problem with external http connect

[Str1k3rOne]

Good day.

Seafile server is installed on Windows Server 2012 R2. Used this instructions http://manual.seafile.com/deploy_windows/download_and_setup_seafile_windows_server.html

The server behind nat, all port forwarding is correct. Now I have: clients from lan are connect to Seafile throught HTTP via external IP adress. There no problem with it. But external clients cant' connect to Server via HTTP throught external ip (or throught VPN to local server ip) (so, they cant' download files, that was sended by lan clients. The error "ERR_CONNECTION_RESET"). But then connect with seafile client on port 8082 without problem. Scheme is attached. How to solve this problem?

ccnet

[General]

USER_NAME = my-seafile

ID = ID

NAME = my-seafile

SERVICE_URL = http://ext_ip:8000

[Network]

PORT = 10001

[Client]

PORT = 13418

seafile

[database]

type = sqlite

[network]

port = 12001

[fileserver]

port = 8082

[seahub]

port = 8000

fastcgi = false