Over the past several years, the chief executive officer (CEO) of your company has read articles on Internet control message protocol (ICMP) attacks and the use of packet sniffers to aid in hacking into computer networks. Though the CEO understands that this is a serious concern, he does not know what, if anything, is being done to protect the organization's network against such attacks.

Prepare a 3-4-page memo outlining what you have done as the network administrator to protect the network against such attacks, as well as additional measures to secure the network against worms, viruses, DoS attacks, spyware, and other such network intrusions that can disrupt the day-to-day business activities.