Script otomatis buat reset DNS di ubuntu 22.0.4

 If FortiClient forces its DNS every time you connect, you can create a script that resets the DNS automatically after the VPN starts.

1. Open the NetworkManager dispatcher directory:

   bash
   sudo nano /etc/NetworkManager/dispatcher.d/99-reset-dns
   

2. Add the following script:

   bash
   #!/bin/bash
   if [ "$2" = "up" ]; then
       nmcli con mod "WiFi-Connection-1" ipv4.dns "8.8.8.8 8.8.4.4"
       nmcli con up "WiFi-Connection-1"
   fi
   

3. Save the file (CTRL + X, then Y and Enter).
4. Make it executable:

   bash
   sudo chmod +x /etc/NetworkManager/dispatcher.d/99-reset-dns
   

5. Restart NetworkManager:

   bash
   sudo systemctl restart NetworkManager
   

Now, every time you connect, this script will automatically override FortiClient’s DNS settings.

After making these changes, run:

bash
nmcli con show "WiFi-Connection-1" | grep ipv4.dns

and

bash
cat /etc/resolv.conf

to make sure your DNS settings are correctly applied.

Try:

bash
nslookup google.com

or

bash
ping -c 4 google.com

to confirm if DNS is working.

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