Locating Network Configuration Information from the Command Line

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Locating Network Configuration Information from the Command Line

Being able to find and understand network configuration information is fundamental to using Linux on a network. In this hands-on lab, we will determine the network configuration for the eth0 interface of the lab host.

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Lab Info

Level

Beginner

Last updated

Aug 22, 2025

Duration

45m

Challenge

Determine the IP Address
1. Run the following command:
```
sudo ip addr show
```
1. Note the IPv4 and IPv6 addresses in the output.
Challenge

Determine the MAC Address
1. Run the following command:
```
sudo ip addr show
```
1. Note the MAC address in the output.
Challenge

Determine the Gateway
1. Show the routing table.
```
sudo ip route show
```
1. Note the gateway in the output.
Challenge

Determine the DNS Server
1. Show the DNS nameserver:
```
cat /etc/resolv.conf | grep nameserver
```
1. Note the DNS server in the output.

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