networking

I am taking networking class right now. The teacher wants us to write a report on any topic related to network. I choose network security. The teacher said network security is too broad and that I need to narrow it down. He said he wants me to focus more on network part than the application. What does he mean by that and what kind of topics are there for networking part in network security?
shahrine99Asked:
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mattyfonzCommented:
You can write about the increasing use of wireless networks and the related security issues with those
im not sure what your lecturer is asking, but it could be either a general paper or more about protocols etc.
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shahrine99Author Commented:
he said something like..worm or malware are very much like network..when i told him that i will talk about SPAM, virus, malicious activity, intrustion detection, etc., he said i need to narrow down..and to focus more on network layer rather than applications
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mattyfonzCommented:
http://en.wikipedia.org/wiki/Network_layer
network layer is level 3 of the osi so you should probly research what this layer is made up of and how it works in regards to the network
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shahrine99Author Commented:
can u explain more and about security related to network? can u give me some examples?
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tellkeeperCommented:
It sounds like he is wanting you to focus on one particular topic. If you are wanting to write about network security in the network layer I would use stateful and stateless firewalls. This is one of the biggest areas of security in the network layer. It also concerns itself more with hardware than software and has no ties to the application layer.
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shahrine99Author Commented:
if you don't mind..can u explain a little more about firewall and how that is the biggest areas of security in the network layer? =)
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shahrine99Author Commented:
hellooo..how come no one is helping?
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mattyfonzCommented:
i dont think anyones really willing to do your assignment for you :)

www.google.com
if you type firewall in there you will find more than enough information for what your looking for
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tellkeeperCommented:
I have been away for a while but yes matty said it.
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GoUdVisKeCommented:
i think what he means by aspect of security is something like:
- wifi security (wep/wpa/... encryption...)
- firewalling (different brands/types)
- VPN (also different ways to connect, protocols)
- IDS (snort) / network anti-virus
- Proxy server
- or you can go more organisational and take something like security policy's
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