Yet another use of DNS service

A recent vulnerability has brought my attention to another use of DNS service I have not heard about before. I hope you will enjoy reading about it. Public key cryptography will be covered in the subject soon.

Here you have some hands-on experience about this vulnerability.

Next class (#8)

We are starting Chapter 4: Transport Layer and we will start reviewing UDP protocol, which provides the connectionless service. You can have a look at sections 3.1, 3.2 & 3.3 of the book. Yes we know our chapter name and the book's do not match, sorry about that.

This week lab we've started to learn how to use TCP & UDP using java. Now you know how to create one or thousands of connections. Use your knowledge wisely :-)

See you on Friday.

Sockets Labs

We missed the lab last week due to change of schedule, but we are going to start this week with Chapter 3: The sockets interface in the lab (covered in sections 2.7 & 2.8 of the book). You can download the slides. Or you can view them online below: Java Network Programming

We are covering the following topics in the upcoming labs:

1. TCP clients
2. TCP servers
3. Muliple threads
4. UDP services
5. Multiprotocol servers