Solved

HomeWork-Network Security using TCP

Posted on 2011-03-20
4
465 Views
Last Modified: 2012-05-11
Hello:

I am interested in learning which protocol is best either TCP, UDP, or Tunneling (Proxy). Please see assignment question below.

Question:
Suppose there are two separate domains, one at SECRET (S) and one at Top Secret (TS), with a guard between them. Assume the guard is truly a “diode”, allowing packets in only one direction. What direction will the guard allow traffic to flow? Suppose you want to move traffic in the allowed direction. Can you run an ordinary TCP connection through the guard to pass it through the guard? Explain why/why not, and if not, what protocol can you use to move the data?
0
Comment
Question by:Sundayy
4 Comments
 
LVL 31

Accepted Solution

by:
Justin Owens earned 500 total points
ID: 35182788
It would have to be one way.  Remember that each level of classification builds on other levels.  If you have Top Secret clearance, it assumes Secret clearance.  Because of this, a Secret domain will be allowed to pass information UP to a Top Secret domain, but not from Top Secret DOWN to Secret.

Because UPD is the only protocol listed which doesn't require two way traffic, it defaults to the type of traffic which must be utilized through the guard.  Ordinary TCP never works only one way.

DrUltima
0
 

Author Closing Comment

by:Sundayy
ID: 35186745
Thanks for the clarification.
0

Featured Post

VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In the world of WAN, QoS is a pretty important topic for most, if not all, networks. Some WAN technologies have QoS mechanisms built in, but others, such as some L2 WAN's, don't have QoS control in the provider cloud.
PRTG Network Monitor lets you monitor your bandwidth usage, so you know who is using up your bandwidth, and what they're using it for.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question