Configure Static IP Linux Debian

Oct 25, 2024 · 2 mins read

Configuring a Static IP Address in Debian

This guide provides detailed instructions for setting up a static IP address on Debian. It includes a summary of commands, a step-by-step breakdown, and troubleshooting tips for common network configuration issues.

Note: Ubuntu uses Netplan, which is a command line utility for the configuration of networking on certain Linux distributions. Netplan uses YAML description files to configure network interfaces

Summary of CLI Steps:

# Open the network configuration file
sudo nano /etc/network/interfaces

# Add configuration for the static IP
iface eth0 inet static
    address <your_static_ip>
    netmask <your_netmask>
    gateway <your_gateway>

# Restart networking service
sudo systemctl restart networking

Configuring a Static IP Using the Command Line (CLI)

Open the Network Configuration File
In Debian, network configurations are stored in /etc/network/interfaces. Open this file with nano:
```
sudo nano /etc/network/interfaces
```
Edit Interface Configuration
Add or modify the configuration for the interface (e.g., eth0) with the specific IP settings:
```
iface eth0 inet static
    address <your_static_ip>
    netmask <your_netmask>
    gateway <your_gateway>
```
- address: Set the static IP address, e.g., 192.168.1.100.
- netmask: Specify the subnet mask, e.g., 255.255.255.0.
- gateway: Define the default gateway IP, e.g., 192.168.1.1.
Save and Close the File
Save your changes (CTRL + O) and close the editor (CTRL + X).
Restart the Networking Service
Apply the new configuration by restarting the networking service:
```
sudo systemctl restart networking
```
Verify IP Configuration
Confirm the new IP by running:
```
ip a show eth0
```

Troubleshooting

Issue: IP address doesn’t persist after reboot.
Solution: Verify that changes in /etc/network/interfaces are correct and saved.
Issue: Unable to connect after setting static IP.
Solution: Ensure IP, subnet, and gateway do not conflict with other devices on the network.
Issue: No internet access after configuration.
Solution: Verify the gateway and DNS settings in /etc/resolv.conf, adding DNS servers if necessary.