Firewall

[Apar]

hi , everybody.
this is the first time iam in this forum, so i think you can help me.
iam going to finish the university , so i want to write a firewall application in .net , but i dont know how to begin . can you help me.

i will be waiting.
thanks

[falco85]

Look into TCP connections. You will need to block them at a very low level (before the OS handles them).