Managing Networking based on Linux

Last Blog Review →

In the last blog we understood, what is ssh keygen, how it’s used, and what are the advantage of using ssh keygen in practical situation. As you can’t give the private .pem file key generated while creating EC2 machine maintaining security. Instead you can create your own ssh keys give the private key to required user’s and then just delete the public key of it later on in the EC2 machine, which stops their access to EC2 machine.

Let’s understand Networking on Linux

To check the IP address - Shows and configures the network interfaces on the current system
```
 ifconfig
```
The Linux command to display or set the system's hostname
```
 hostname
```
To configure wireless network interfaces.
```
 iwconfig
```
To trace the route that packets take from your system to a destination host or IP address.
```
 traceroute google.com
```
To connect to remote systems or network services and allowing you to interact with a remote server or device over a text-based interface.
```
 telnet cricket.com 80
```
To query Domain Name System (DNS) servers and retrieve domain name information, such as IP addresses, mail servers, and other DNS records.
```
 nslookup google.com
```
To display information about a user on the system
```
 finger raj
```
To check if internet connection is working
```
 ping google.com
```
To Establishes a secure encrypted shell session with a remote system over the SSH protocol
```
 ssh user@A.B.C.F
```
To Securely copy files between the local and remote systems using the SSH protocol
```
scp [options] source destination
```
To interact with APIs, download files, upload data, and troubleshoot network services.
```
curl -O https://cricket.com/schedules.txt
```
To download files from the web using HTTP, HTTPS, and FTP protocols.
```
wget -O https://cricket.com/schedules.txt
```
To displays bandwidth usage on an interface by showing the current connections and the data transfer rates between hosts.
```
sudo iftop -i eth0
```
to configure a firewall on a Linux system
```
sudo ufw status
```
To see how much bandwidth each process on your system is using
```
sudo nethogs eth0
```

Conclusion →

In this blog we understood, basic but very useful commands of the networking used in Linux which are used in day to day life for troubleshooting the connectivity issue.

Image credit → https://olinux.net/linux-network-monitor/

💡

That’s a wrap for today’s post! I hope this has given you some valuable insights. Be sure to explore more articles on our blog for further tips and advice. See you in the next post!