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| -rw-r--r-- | readme.rst | 2 | ||||
| -rw-r--r-- | tasks/19/readme | 23 |
2 files changed, 25 insertions, 0 deletions
@@ -48,3 +48,5 @@ Here are the links to each task's readme: 17. Using Kernel Treads: `task <https://git.bryanbrattlof.com/eudyptula-challenge/tree/tasks/17/readme>`__ 18. Handling Delayed Work: `task <https://git.bryanbrattlof.com/eudyptula-challenge/tree/tasks/18/readme>`__ + +19. Networking Filters: `task <https://git.bryanbrattlof.com/eudyptula-challenge/tree/tasks/19/readme>`__ diff --git a/tasks/19/readme b/tasks/19/readme new file mode 100644 index 0000000..18369dd --- /dev/null +++ b/tasks/19/readme @@ -0,0 +1,23 @@ +Task 19 +======= + +Handling delayed work is easy now, right? So, time to move on to +something totally different. How about networking? We have been +ignoring that part of the kernel, so let us now focus on the network +side of the kernel, as that is a huge reason for why Linux has taken +over the world. + +For this task, write a netfilter kernel module that does the following: + + - monitors all IPv4 network traffic that is coming into the machine + + - prints the id to the kernel debug log if the network traffic stream + contains your id. + + - properly unregisters you from the netfilter core when the module + unloads. + +Test this by sending yourself an email with your id in the subject, much +like the email you need to send back to me. + +Send in the proof and the .c file for the module. |