Using a Raspberry PI as a router

1. Installing OS

Equipment:

• Raspberry PI model 3 B

• Micro SD card

• Computer

• Monitor, keyboard and mouse

Getting/Installing the os:

• First I downloaded the image installer from the official website: image installer

• I installed the 64 lite Rasbian os version

The setup:

• To configure the PI you need a monitor, mouse and keyboard.

• You could also prepare the SSH beforehand but it’s a bit more complicated.

• When you boot for the first time you get setup menu where you go through the basic stuff.

The OS:

• Rasbian lite is a version of Rasbian without a desktop environment, you only get a terminal.

2. Connecting with the WIFI

Connecting:

• Connecting the raspberry pi to a wifi network is as simple as just adding some lines to a config file.

• The file we need to change is : etc/wpa_supplicant/wpa_supplicant.conf

• now you just need to add this lines:

network={

ssid="You SSID Name"

psk="Your WiFI Password"

key_mgmt=WPA-PSK

}

network={
    ssid="You SSID Name"
    psk="Your WiFI Password"
    key_mgmt=WPA-PSK
}

• you can search for al the wifi networks by typing this command:

$ sudo iwlist wlan0 scan

• The problem with the raspberry pi is that wifi isn’t standard enabled. So we need to enable it by this command:

$ sudo rfkill unblock all

Problems with scrolling:

• There is a bug in the newest OS at this moment that you can’t scroll in the terminal.

• This was a problem as there were a lot of wifi networks.

• You can easy fix this by writing the output to a file it works as simple as this:

$ [commando with output] > [filename].txt

• Now you can just scroll through the file by using nano:

$ nano [filename].txt

Checking the connection:

• you can check if you have an internet connection by this command: $ping [a website URL]

AARON FEYS

EURASMUS - 01

Using a Raspberry PI as a router

3. SSH

SSH:

• SSH is a method of controlling a computer over a network.

• It basically allows you to have a terminal on an other laptop.

Enabling SSH:

• You can very easily enable ssh with the following command:

$ sudo raspi-config

• Than a configuration window opens, just scroll to interfaces push enter.

• Go to ssh push enter and enter to confirm.

Finding your IP:

• To find your IP-address you can use this command: $ hostname -I

Connecting from an other computer:

• As I use Ubuntu (Linux) as operating system for me its very easy with following command:

$ ssh [username]@[IP-address]

4. Making a router out of the raspberry PI

Use your raspberry PI as a router:

• I followed this link : link

• You need to copy a lot of commands that’s why it’s so handy to have ssh.

Wifi gone:

• One unfortunate thing of using the raspberry pi as a router is that you can’t use the wifi anymore as internet source so you need to use a cable.

AARON FEYS

EURASMUS - 02