You have now been involved in several major changes in the security of GlobalCorp, and specifically the Testbed campus. You have worked on the planning and design of the trusted network, you have worked on the initial rollout of the CA hierarchy, you have worked on assigning certificates to the end users and computers in the Executive building of the Testbed campus, and you have managed the implementation of secure email a critical service for GlobalCorp. Blue has asked you to meet with the other administrative staff of the Testbed campus and discuss how the certificates will impact the organization. There are a total of about 40 people in the meeting, and you have decided that your primary focus during this meeting will be on encryption\cryptography. Choose the best solution for providing the correct information to your administrative staff on how encryption\cryptography and digital certificates will be properly used in the network:}
Things have been running smoothly now at GlobalCorp for the last several weeks. There have been no major attacks, and it seems that the systems in place are performing just as expected. You are putting together some paperwork when you get a call from Orange to meet in the conference room. When you get there, Orange is wrapping up a meeting with the senior Vice President of Sales, whom you say hello to on your way in. "I was just talking with our senior VP here, and we're run into a new issue to discuss," Orange tells you. "Wel Il let you two sort this out. Orange, do let me know when it all ready to go."With that the VPleaves. You sit down across from Orange, who starts, "That was an interesting meeting. It seems that even though I have always said no to the request, we are being pressured to implement a wireless network." "Here?" you ask, "In the executive building?""Yes, right here. The sales team wishes to have the ability to be mobile. Instead of running a full scale roll out I have trimmed the request down to running a test implementation on the second floor. The test run on that floor will be used to determine the type of wireless rollout for the rest of the building, and eventually the rest of the campus. So, here is what we need to do. I need you to create the roll out plan, and bring that plan to me. Il review with you and implement as required." "As always, what is my budget restriction?" you ask. "In this case, security is the top priority. If we are going to run wireless, it has to be as secure as possible, use whatever you need. That being said, your plan has to use existing technologies, we are not going to fund the development of a new protocol or proprietary encryption system right now."You begin your work on this problem by pulling out your own wireless networking gear. You have alaptop that uses an ORiNOCO card, and you have a full directional antenna that you can holdor mount on a small tripod. You take your gear to the lobby of the second floor, and you load up Net Stumbler quickly to run a quick check that there are no access points in your area. The immediate area is clear of any signal, so you take you gear and walk the entiresecond floor, waitingto see if there is any signal, and you find none. With your quick walk through complete, you take your gear back to your office and start working on your plan. Using your knowledge of the GlobalCorp network, select the best solution to the wireless networking rollout problem:}
You have now seen to it that all end users and computers in the Testbed office have received their certificates. The administrative staff has been trained on their use and function in the network. The following day, you meet with Blue to discuss the progress."So far so good," starts Blue, "all the users have their certificates, all the computers havetheir certificates. I think we are moving forward at a solid pace. We have talked about the ways we will use our certificates, and we need to move towards securing our network traffic." "I agree," you reply, "last week I ran a scheduled scan, and we stillhave vulnerability in our network traffic. The folks from MassiveCorp would love to have a sniffer running in here, I sure of that." "That's exactly the point. We need a system in place that will ensure that our network traffic is not so vulnerable to sniffing. We have"to get some protection for our packets. I'd like you to design the system and then we can review it together." The meeting ends a few minutes later, and you are back in your office working on the design. Choose the best solution for protecting the network traffic in the executive office of the Testbed campus:}
By now, you are feeling confident that the security of the MegaCorp network is getting under control. You are aware that there are still several critical areas that you must dealwith, and today you are addressing one of those areas. You have been able to take care of the router, firewall, security policy, and intrusion detection, now you are concerned with some of the hosts in the network. Since the organization is not very large, you are the only person working in the IT end of the company. Itwill be up to you to directly work on the systems throughout the network. You make a quick chart of the systems you know should be in the MegaCorp network:
Server0001, 10.10.20.101, Windows 2000 Server Server0010, 10.10.20.102, Windows 2000 Server Server0011, 10.10.20.103, Windows 2000 Server Server0100, 10.10.20.104, Linux (Red Hat 8.0) User systems, 10.10.100.100~10.10.100.200, Windows 2000 Professional The addressing that you recommended months ago is in place, and it follows a distinct logical pattern,you are hoping that no new systems are hidden in the network somewhere. In the company, you have been granted domain administrator rights, and no other user is authorized tohave administrator, root, supervisor, or otherwise privileged level of access. All the Windows systems are to belong to one windows domain called SCNA.edu. Users are no longer allowed to install unauthorized applications, and are all to use the file servers for storage. Although they have the ability to do so, users are not supposed to store any work data on their local systems. The servers are located in a server cabinet that is inside your office, so you decide to start working there. Using your knowledge of MegaCorp select the best solution for hardening the MegaCorp operating systems:}
Now that you have a fully functioning CA hierarchy in each location, and that the trusted network is well underway, you are called in to meet with Blue. Blue comes into the room, and you talk to one another for a while. It seems that now with the CA hierarchy in place, you need to plan the certificate rollout for the individual users and computers in the network. Since this is the executive building, Blue places higher security requirements here than on the otherbuildings. Certificates need to be issued to all the entities, computers and users, in the network.Blue has decided that for all senior level management, the process for certificate issuance should be even more secure than the rest of the deployment. Based on this information, and you understanding of the GlobalCorp environment, choose the best solution to assigning certificates to the computers and users of the trusted network in the Executive building:}