In project 1 we asked you to implement a simple FTP server using the networking functionality provided by the Solaris kernel, so by now you are familiar with the usage of network functions such as socket(), bind(), listen(), accept(), etc. In this project, your task is to implement the IP layer of the network stack. You will link your IP layer to our simulator, which implements the basic pieces of an operating system as well as the physical, link, transport, and socket layers of the simulated network.
The resulting system is very realistic, and will provide you with useful experience in network programming. Details of the simulator and how to use it are described in a separate handout.
When implementing the IP layer, you will also have to add support for network address translation (NAT) and for stateless firewalling.
You will also implement the Dynamic Host Configuration Protocol (DHCP), which allows a host to acquire a dynamic IP address.
In project 3, you will add stateful firewalling to the IP layer implemented in this project.