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I am using Ubuntu 20.04 on my desktop, my internet is on wifi via d-link dongle.

Before VPN connection inter is working fine with good speed. But once I connect VPN internet is not available on Ubuntu system, also the gateway which is router IP is not pingable.

I found this below link but I am connecting via forticlient VPN, but the steps are not applicable for me.

Internet becomes unavailible after connecting through vpn

Step 1 & 2 are not applicable for me. enter image description here

But I have done step 4 & 5 which on WIFI Network, but still not working. enter image description here

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  • How are you connecting to the VPN? From the command line or via Network Manager? If from the command line, what command do you use?
    – Sebastian
    Jul 27, 2020 at 11:48
  • Further question: Do you have a firewall running (ufw, iptables)?
    – Sebastian
    Jul 27, 2020 at 11:49
  • @Sebastian I am connection VPN via forticlient. & Yes firewall is disabled, if it was not disabled then it would have not be working when the VPN is disconnected.
    – AReddy
    Jul 27, 2020 at 13:50
  • I don't know what "forticlient" is, but it may mess with your network settings. You might add the outputs of ifconfig and route before and after connecting the VPN, it may help tracking down the issue.
    – Sebastian
    Jul 28, 2020 at 12:13

1 Answer 1

Reset to default
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I am using ubuntu 20.04 too with FortiClient VPN. I found that NetworkManager handle these configurations relate to network.

You can try nm-connection-editor then Select your default network, select General tab and check if Connect automatically with priority: Enable with positive value (>0). My value was -999 then I changed to 100. Network work again. Although I didn't find root problem yet.

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