Study notes and a brief review of ELEC5509 Mobile Networks

Exams for semester 1 this year are finally over. The first set of notes to go up is for ELEC5509 Mobile Networks taught by Abbas Jamalipour. As usual, you’ll be able to find it at my Sydney Uni section of the blog.

I would have to say that this course is one of the least enjoyable and least rewarding courses I’ve done over the years, and would strongly advise those doing Telecommunications Engineering at USYD to not take this course.

Read on for a brief review of the course.

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Is this IP attacking my server?

Like many others, I maintain a server that runs 24/7 and it’s connected to the internet. Yesterday I came home to a most unusual sight on my server’s status LEDs – unexplained network activity. It’s unusual because for me, my server is almost always idle. It doesn’t serve web pages, and in fact it doesn’t really do much for the internet except for accepting SSH connections so I can access my home resources while away. So I thought I might want to investigate the cause of the suspicious network activity.

It was a good thing that username and password authentication have been disabled. My investigations after the break!

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