Firewall architectures-screened subnet architecture, Computer Network Security

Assignment Help:

Screened Subnet Architecture


This setup provides an extra security layer to screened host architecture by creating a perimeter subnet which further isolates internal network from the Internet.In this architecture two screening routers and a single screening host is used. Both routers are connected to create the perimeter subnet also called Demilitarized Zone (DMZ). Screening host sits in this subnet between two routers. One router is facing the Internet and other is facing local network. Now to break into the internal network an attacker has to pass through both the routers. Even if it breaks through screening host it still has to pass through the internal router. The DMZ could also contain all information servers, modem pools and other systems that require careful controlled access.


Advantages


•    Provides maximum depth of defense
•    Local network can provide services to outside without compromising to inside
•    Much flexible than previous solutions


Disadvantages


•    Costly as compared to other architectures
•    Much complex and requires very careful configuration between guarding machines


Related Discussions:- Firewall architectures-screened subnet architecture

Address resolution with closed-form computation, ADDRESS RESOLUTION WITH CL...

ADDRESS RESOLUTION WITH CLOSED-FORM COMPUTATION For networks use reliable addressing, it is possible to select an address that creates closed-form address resolution possible.

Asymmetric encryption-cryptography, Asymmetric Encryption Asymmetric encr...

Asymmetric Encryption Asymmetric encryption method makes use of two different but related keys and either key can be used to encrypt or decrypt the message. This method is freque

Using icmp reachability, USING ICMP TO TEST REACHABILITY:  ICMP can a...

USING ICMP TO TEST REACHABILITY:  ICMP can also be used to test several tools. An Internet host A, is reachable from another host B, if data packets can be send from A to B. P

Internet protocol(ip), Internet Protocol IP Gives computer-to-comp...

Internet Protocol IP Gives computer-to-computer communication. Host and receiver addresses are computers. This is also known machine-to-machine communication.

Draw the full network diagram, Problem (a) Below is a capture of an E...

Problem (a) Below is a capture of an Ethernet II frame which contains an IPv4 packet and a TCP segment. The second screen capture is from the data portion of the frame.

Describe how lower bounds on arc flows, QUESTION: (a) Suppose the graph ...

QUESTION: (a) Suppose the graph below, use the Flow Decomposition method to list the cycles and paths produced. (b) Describe how Lower Bounds on Arc Flows are eliminated

What do you understand by demilitarized zone, Problem 1: What does the ...

Problem 1: What does the SNMP access policy show? SNMP community diagram SNMP access policy Problem 2: Does there exist any formal functional specificat

Draw the waveform for an asynchronous transmission, Question: (a) Draw...

Question: (a) Draw the waveform for an asynchronous transmission with the following specifications: Character "H", one even parity bit, one start bit, one stop bit, and a b

Tomcat server, how to access tomcat by internet

how to access tomcat by internet

Minimum cost flow problem, QUESTION (a) A convex flow problem is a no...

QUESTION (a) A convex flow problem is a non linear network flow problem. Explain how a convex flow problem could be transformed into a Minimum Cost Flow problem. (b) Exp

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd