we are working in a lab with set of 35 systems in college. my system is only ubuntu installed and i got the separate ip for my project purpose. and each one having the separate ip. but somebody else unknowingly use my ip to download movies and not allowing me to use internet for my project work. the network adminstrator is busy for 3 months. so i have to find a solution. so i need the solution for:
1) how to block others to use my ip even though i am not an network administrator(my ip:10.1.8.150, proxy server is:10.1.8.1)
so could anyone please suggest me any software or any guide too prevent others from using my ip.