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Internet Connectivity Issues After Cyberghost VPN Connection on Windows 10

dans12949 12192 10
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  • #1 18437463
    dans12949
    Level 8  
    Hello, I bought a Cyberghost subscription some time ago. I select the server in the program to connect and it connects without a problem, but immediately after connecting to the server, the internet does not work. What could be the reason? It used to work fine for me before and now it doesn't :( I have two computers and both are not working when connected to the server. Computers connected by LAN cable. Windows 10

    Help :(
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  • #2 18437654
    m.jastrzebski
    Network and Internet specialist
    dans12949 wrote:
    Hello, I bought a Cyberghost subscription some time ago. I select the server in the program to connect and it connects without a problem, but immediately after connecting to the server, the internet does not work. What could be the reason? It used to work fine for me before and now it doesn't :( I have two computers and both are not working when connected to the server. Computers connected by LAN cable. Windows 10

    Help :(

    Probably a routing problem. What purpose is this VPN for? What traffic is supposed to go through this VPN? What are you connecting to with this VPN?
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  • #3 18437865
    dans12949
    Level 8  
    Damn, 2 months ago it was still working normally on both computers and now I haven't used it for a long time and today I tried to launch cyberghost connects normally to the server I choose but the internet does not work :/
    I don't know much about it, I need a VPN to use the browser.
    When I launch cyberghost, a new network card appears and the status is connected and I have two networks connected from the virtual card and from the lan cable
  • #4 18437872
    m.jastrzebski
    Network and Internet specialist
    dans12949 wrote:
    Damn, 2 months ago it was still working normally on both computers and now I haven't used it for a long time and today I tried to launch cyberghost connects normally to the server I choose but the internet does not work :/
    I don't know much about it, I need a VPN to use the browser.
    When I launch cyberghost, a new network card appears and the status is connected and I have two networks connected from the virtual card and from the lan cable

    But what do you want to connect to via VPN in this browser.
    Take a screenshot when connected to the VPN ipconfig /all
  • #5 18437950
    dans12949
    Level 8  
    I don't understand the question, I always fired this program, it connected to the server I selected in the program and from then on, whether in the browser or in the communicator, I had internet. I'm translating this into peasant reason because I don't know. I am sending a screen with ip config and program settings, maybe something is wrong there: / \ [/url] Internet Connectivity Issues After Cyberghost VPN Connection on Windows 10 Internet Connectivity Issues After Cyberghost VPN Connection on Windows 10
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  • #6 18437960
    m.jastrzebski
    Network and Internet specialist
    dans12949 wrote:
    I don't understand the question, I always fired this program, it connected to the server I selected in the program

    The damn question is very simple.
    Why are you running a VPN. I understand you're off.
    Is a website down for you without a VPN? Or something like that? If you fire up this VPN, something must change with it. Without him something doesn't work, with him something works. And if you don't know why you're firing it, then don't start it, everything works without it.

    The VPN connection is missing from the default gateway configuration. It's likely that the VPN connection modifies the routing table and tells it to push all traffic through the VPN interface. But the VPN interface doesn't have a default gateway defined, so it doesn't know where to send it. The default gateway should be with DHCP. Check in the interface configuration if it is enabled that all data should come from DHCP.
  • #7 18438496
    dans12949
    Level 8  
    VPN I need to use one website. Damn, but I have to change this gate in the router configuration because if so, it may be a problem because I have a router from a fiber supplier and I can't really configure it :/
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  • Helpful post
    #8 18439208
    m.jastrzebski
    Network and Internet specialist
    dans12949 wrote:
    VPN I need to use one website. Damn, but I have to change this gate in the router configuration because if so, it may be a problem because I have a router from a fiber supplier and I can't really configure it :/

    Ask someone on site for help.

    This fiber router is a gateway. Through it, every computer on this local network comes to light. The address of this router must be provided in the configuration of the computer's network card. When you want to enter www.XYZ.pl, the data is first sent to this gateway (router), and it also sends it to the next one. If the configuration of the computer's network card directs traffic to, for example, the printer's IP for any reason, then of course "the internet will not work". Of course, you usually don't have to enter this gateway address manually in the configuration of the network card. You turn on the computer to the network, and the so-called DHCP server (running in this case on this router) gives your computer an address in the local network and tells you what the gateway address is. This happens automatically.

    The same should happen with a VPN connection. This connection creates a virtual NIC (look at the screenshot you sent). There should also be a gate there. This gateway is physically some kind of router at the VPN provider. IA doesn't have the address of this gateway for some reason.

    A 99% VPN connection changes the configuration so that all traffic stops sending to your physical NIC and only to the virtual NIC created by the VPN. But this network card does NOT have a gateway, an address through which the VPN's local network can go out into the world.
  • #9 18439625
    dans12949
    Level 8  
    So I understand that if I manually set the gateway address of the virtual network card to the same address as the physical network card, everything will run?
  • #10 18439638
    m.jastrzebski
    Network and Internet specialist
    dans12949 wrote:
    So I understand that if I manually set the gateway address of the virtual network card to the same address as the physical network card, everything will run?

    No, I won't.
    The VPN interface must have a valid gateway from its network. You should get the address of this network when establishing a connection. There is some error in the configuration of this VPN, or a problem on the side of the service provider.
  • #11 18439665
    dans12949
    Level 8  
    Problem solved :) in the properties of the physical network card, I unchecked the IPv6 protocol and somehow it magically started working

Topic summary

The discussion revolves around internet connectivity issues experienced after connecting to Cyberghost VPN on Windows 10. The user reports that, despite successful connection to the VPN server, internet access is lost. Responses suggest potential routing problems and the need for proper configuration of the VPN's virtual network interface. It is highlighted that the VPN connection may lack a default gateway, causing traffic routing issues. The user later resolves the issue by disabling the IPv6 protocol on the physical network card, which restored internet functionality.
Summary generated by the language model.
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