title: Network Security
body: <p>I have been a .net developer for the past three yrs. Just curious to know about the network security field. What kind of work does the developers working in these area do? I really have not much idea about network security but what my understanding is these people are involved in securing network, preventing attacks on network  as obvious. Could any one please give me some details about this field and also what does it take to move to this field.</p>