Question

a) One of your friends called you to say that a message suddenly appeared on his
screen that says his/her software licence has expired and he/she must immediately
pay $2000 to have it renewed before control of the computer will be returned to
him/her. Identify and discuss this malware. Being a student of networking/cyber-
security, what recommendations would you give to your friend regarding the
importance of information security and how to mitigate this kind of malware attack?

b) You have recently joined Royal Security Services as an information security intern.
Your supervisor has asked you to research two network firewalls. In this regard, you
have to create a table by comparing features of firewalls in terms of filtering
methods (stateless or stateful filtering), and the additional features these firewalls
support (IDS, content filtering, etc.) for each firewall. Which one would you
recommend to your supervisor? Justify your answer.

Answer 1

a) The beat solution is use anti virus softwares to protect from these types of threats .

And also we need to avoid the unknown websites .

b)

Stateless Firewalls	Stateful Firefalls
Fast Performance	Powerful in detecting unauthorized attempts
It will perform very good in high traffic also	The powerful memory retains key attributes of network connections.
These firewalls are cheaper to purchase .	Comparitively high than stateless
They do not inspect traffic	Consequences may allow hacker and take control over a firewall .
It will not verify entire packet and checks whether the packet is satisfing the security rules or not .	These firewalls can even attract outside connections .
Stateless firewall needs some configuration to a suitable level of protection .	Man in middle attacks may pose to many vulnarabilities .

As we are in security service sector we need to choose the stateful firewall compared to stateless firewall .

Because , stateful firewall is more powerful to dectect threats and also its continuous monitoring on the traffic .