CDDN - Change DNS Dynamically with your Network

This script allows you to have the best configuration of your DNS when switching from one Wi-Fi to another.

Getting Started

Prerequisites

The program works for MacOS X && Distro Linux.
If you are Linux User, the program will ask to you Sudo permission and the iwgetid program.

Installing

When you start the program the first time, it will ask you to edit a file that created for you, it will be a txt file with SSID and DNS pairs.
With the following Synopsis SSID | DNS1 DNS2;

$ bash Wi-Fi-DNS.sh
Modify dnsConfig.txt with your custom settings & restart the .sh

Options

List configuration

You have the option -l as the list, to list all pair in your configuration

$ bash Wi-Fi-DNS.sh -l
replace_with_name_of_your_Wifi | 1.1.1.1 1.0.0.1 ;
FritzBox Wi-Fi 2.4GHz | 208.67.222.222 208.67.220.220 ;
FritzBox Wi-Fi 5GHz | 8.8.8.8 8.8.4.4 ;

Save configuration

You have the option -s to save your current DNS configuration directly inside the configuration file.

$ bash Wi-Fi-DNS.sh -s
CDDN has saved your current DNS configuration

Test configuration

You have the option -t as the test, for testing the correct configuration of your DNS. The option -t execute simple command dig to google.com

Program execution

After correctly setting up the configuration file, we can move on to running the program. If the name of your current Wi-Fi is on the list, your DNS will be changed.

$ bash Wi-Fi-DNS.sh
I have correctly set the DNS 208.67.222.222 208.67.220.220 for the network with the SSID FritzBox Wi-Fi 2.4GHz

Authors

• Andrea Bacciu - github

License

This project is licensed under the MIT License - see the MIT license online for details