How to protect from ARP spoofing

Question

In my campus, some people they are using netcut in Windows and they are blocking us not to use Internet.

Since I am a Ubuntu user, I can't install neither nutcut nor netcut-defender to protect and even I tried TuxCut. It's is also not working properly.

Can any one give me the right solution for this?

score 4 · Answer 1 · answered Mar 15 '14 at 20:16

Try ArpON, it is already in Ubuntu repository:

sudo apt-get install arpon

sudo arpon -i eth0 -d

References:

score 2 · Answer 2 · edited Jun 24 '24 at 05:21

Try changing MAC address. It will remove you from the list of the attacker.

Figure out Network Interface name which connects you to Wi-Fi with ip addr or
```
sudo ifconfig
```
If ifconfig is not installed
```
sudo apt install net-tools
```
This will give you a list of network interface card. Some of them are for Bluetooth, Wi-Fi. Note down the name responsible for Wi-Fi connection. For my PC it was wlp3s0
Now install macchanger
```
sudo apt install macchanger
```
Turn off the network interface card

sudo ifconfig wlp3s0 down
Randomly change macaddress
```
sudo macchanger -r wlp3s0
```
Turn on the network interface card
```
sudo ifconfig wlp3s0 up
```
Turn off Wi-Fi and turn it on

MAC address is changed, internet will work fine. This changes MAC address temporarily. Upon restart you need to change address again.

2 Answers2