Debian: Setup Static IP Address

NOTE: This works on Debian 13.4. 

 Here are notes and steps to assign a static IP address for a Debian host. 

 NOTE: If you are doing this for an Ubuntu host, see this page: Ubuntu: Setup Static IP Address 

 Net Tools (ipconfig) 

 Install net tools, so we can use commands like: ipconfig 

 sudo apt install net-tools 

 Static IP Address 

 Static addresses will be defined in a netplan file, configured below. 

 But, we need to do a few things, first: 

 

 Get the Gateway IP 

 Enable Adapters 

 

 Get the Gateway IP 

 You will need to know the gateway address that your host will use. 

 If the host is not on the desired network, you will need to determine the gateway IP, manually. Or, you can join the host to the network, and do the following to determine it. 

 If the host is up, you can run this command to get the current default gateway assigned to it: 

 ip r | grep default 

 This command will return the default gateway address, like this: 

 

 Enable Adapters 

 If you added an adapter to the host, it may be in a down state. 

 To enable it, use this command to find the name: 

 sudo ip a | grep ^[[:digit:]] 

 The above will give a list, like this: 

 

 And, you can enable it with this: 

 sudo ifconfig eth1 up 

 NOTE: Be sure to use the name of the nic, from the previous call. 

 Network Interfaces 

 Open the interfaces file at: /etc/network/interfaces 

 sudo nano /etc/network/interfaces 

 auto ens192

iface ens192 inet static

 address 192.168.1.50/24

 gateway 192.168.1.1

 dns-nameservers 192.168.1.2 8.8.8.8 

 Replace: 

 

 ens192 with your actual interface name (found above) 

 192.168.1.50 with your desired static IP 

 192.168.1.1 with your gateway/router 

 Set the dns-nameservers you need with a space between each. 

 

 Save and close the interfaces file. 

 Restart Networking 

 With the config updated, we need to restart networking. 

 Do this: 

 sudo systemctl restart networking 

 Now, check the IP address with this: 

 sudo ifconfig 

 You'll see something like this: