Question

Write a two page paper that describes general network architecture and analyzes contemporary threats to network security. Be sure to include a discussion of both the advantages and disadvantages of firewalls. Include at least 3 outside scholarly sources in your analysis, and ensure that you document these sources in both your in text citations and your References list.

Answer 1

ANS

general network architecture

Network architecture is the design of a communication network.

It is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as data formats use. In telecommunication, the specification of a network architecture may also include a detailed description of products and services delivered via a communications network, as well as detailed rate and billing structures under which services are compensated.

 

Advantages of Using a Firewall

A Company network or a home computer will have number of advantages when using a firewall.

They are more cost effective than securing each computer in the corporate network since there are often only one or a few firewall systems to concentrate on.

There are some firewalls which are able to detect viruses, Trojans, worms and spyware etc.

 

Disadvantages of Using a Firewall

Even if a firewall helps in keeping the network safe from intruders, but if a firewall is not used properly it would give a false impression to you that the network is safe.

The main disadvantage of a firewall is that it cannot protect the network from attacks from the inside.

They often cannot protect against an insider attack.

Firewalls cannot protect a network or pc from viruses, Trojans, worms and spyware which spread through flash drives, potable hard disk and floppy etc.

They may restrict authorized users from accessing valuable services.

They do not protect against backdoor attacks.

They cannot protect the network if someone uses a broadband modem to access the internet.