[Maximus]

I'm new here..so please bare with my lack of knowledge on where to post.
I've been having trouble with securing my network. I know enough to confuse most "script kiddies", but any cracker who is persistent enough may be able to access my network without my knowledge. :headbash:
What are some techniques that you use to keep crackers off your network and/or system.
Using your knowledge of ethical hacking, please give some security tips that can help not only me but others who may think that their network is bricked up.