[Solved] Problem with configuring the VPN server on the home UPC network

Hello,
Due to my profession, I travel around the country quite often, there are also several-day trips abroad and, being on such a trip, I would like to be able to watch TV via the Horizon Go application on a mobile or a laptop connected to some hotel network via Wi-Fi. Due to the stupid requirement to be in the UPC network, some channels are unavailable when I use the application while connected to the net from a provider other than UPC.

I wanted to somehow get around this blockade and found a solution on the Internet that was to put a VPN server on one of the computers in my home network using the OpenVPN software and properly configure the router so that I could 'enter' my network from the outside. So I set up OpenVPN as instructed on the website [url=]https://community.openvpn.net/openvpn/wiki/Easy_Windows_Guide[/url] . There is already some success, because I was able to establish a VPN connection from the 'client' laptop (there is a laptop from my internal network, but for testing purposes I connect to the internet via a mobile phone [T-Mobile network]) to my computer acting as a server VPN.
Unfortunately, it does not work as it should, i.e. after establishing a VPN connection on the 'client' laptop, the public IP address is the same as it was before the connection was established (i.e. the public 'T-Mobile' address), and mine is the goal is to get a public address from UPC on this 'client' laptop.
I searched the internet for this problem and from what I could read, in this case, you should supplement the VPN server configuration file with an entry push "redirect-gateway def1" . Unfortunately, after updating the configuration file like this, the VPN connection works, but then after establishing a connection on the 'client' laptop, I do not have access to the Internet at all and I am not able to verify the public IP address on this laptop in any way.

Below I present the contents of the server and client configuration files, it may be helpful in diagnosing the problem:

Server configuration file (server.ovpn):


Client configuration file (dell-sl-laptop.ovpn):


Additional steps that I did on the UPC (Horizon) router as part of the OpenVPN configuration:
- forwarding of the external port 1194 to the internal port 1194 to the internal IP address (192.168.1.95) of my computer, which acts as a VPN server (in the Advanced tab, in the Forwarding section, I created the following entry: Public Port Range 1194-1194 , Target IP Address 192.168.1.95 , Target Port Range 1194-1194 , Protocol UDP ).

Additional steps that I performed on a computer inside my network (IP address 192.168.1.95) acting as a VPN server (Windows 10):
- configuration in Windows Defender Firewall to allow incoming traffic for UDP protocol to local port 1194.

I am asking for help in solving the problem, thank you in advance for any tips and suggestions.

From what you are replying, the ovpn server does not send the correct static route configuration to the client.

Check the internet for push-route options or something like that. Or you can take a look at WireGuard, which is probably easier to set up

See here: https://komputerowiec.net/vpn.html. The description is for Raspberry Pi, but the configuration is similar. Your configuration lacks a definition for DNS on client ends, maybe there is a problem here (https://openvpn.net/community-resources/pushing-dhcp-options-to-clients/).

Greetings

Thank you for your answer. I understand that your suggestion relates to the fact that there is no internet on the 'client' laptop side after establishing a VPN connection, right?
In the example server configuration file, there are indeed entries starting with 'push "route (...)"', they are as follows:
; push "route 192.168.10.0 255.255.255.0"
; push "route 192.168.20.0 255.255.255.0" .
Are these routes? And do you need to set these parameters only on the server side (in the sense by adding appropriate entries in the server configuration file), or also on the client side (i.e. you should add similar entries in the client's configuration file)?

Added after 1 [hours] 3 [minutes]:

I supplemented the server configuration with DNS entries:


Now, after establishing a VPN connection, DNS's on the 'client' latop are set to the same as above (I verified it with the ipconfig / all command), unfortunately the configuration update did not help, still (after establishing a VPN connection) on the client side no internet access.

And you are able to upload logos from ovpn client, maybe there is something there that we don't know.

Greetings

EDIT: See here: https://www.reddit.com/r/OpenVPN/comments/81q...e_how_to_set_up_openvpn_server_on_windows_10/, with particular emphasis on the paragraph "Configuring The Server To Allow Traffic".

@ milu86
I don't know how current it is:
https://pytania.upc.pl/?q=fact_1007431

I upload logs from the 'client' laptop.

SOLUTION:
Set value to 1 in the registry for Atritib IPEnableRouter in the key HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesTcpipParameters and launching services Routing and remote access and OpenVPNService solved the problem. After establishing a VPN connection, the 'client' computer has access to the Internet and has the correct public IP address.