1. A firewall is always necessary to guard against a network (either at home or at the office) from any possible attack (whether intended or with no intentions). A firewall can be a physical hardware solution or can also be implemented as a software solution. Firewalls prevent unauthorized Internet users from accessing private networks connected to the Internet, especially intranets. All messages entering or leaving the intranet (i.e., the local network to which you are connected) must pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria (Indiana University, 2009)
XNET Solutions - offers a hardware firewall. Details at http://www.xnet.com.pk/
Checkpoint - offers what they called appliance based (which i understood as hardware) firewall Details at http://www.checkpoint.com/index.html Further checking it, Checkpoint's solution contained both hardware and software
Norman Software - offers software firewall solution. Details at http://www.norman.com/
2. Backup Policy
Charles Sturt University (CSU) has the following documents in their website.
www.csu.edu.au/division/dit/about/Dit_policies/DIT-Policy-for-Information-
The system operation team has strict guideline to backup procedures which will be followed strictly.
3. Using just a simple keywords of "How to write a virus" at google, it returns 19100000 hits.
and high on the list is even youtube videos to teach someone who may be interested to do so.
Reference:
1. Indiana University (2009). What is Firewall ?
Retrieved on May 10, 2009 at http://kb.iu.edu/data/aoru.html
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