i was a diploma in networking, and has be in the final year and need to do some network security project..
can someone give me an idea what things should i do for my project.. because i think i just want to do something that been related with router..
i just want to get an A for my final project.. thank you : )

There are no end of choices for this project. What do YOU think may be interesting and important? Find a topic that interests you, and do the best job you can on implementing it. That's the only way to an 'A' grade that I know of! :-)