Develop firewall rules, Computer Network Security

Assignment Help:

Question requires you to develop firewall rules based on a fictitious organisation.

Scenario:

You work for a security-conscious company, xC-Cure, who develop encryption technologies for large corporate and defence customers world-wide.  Your role is a junior security specialist and you have recently been asked to plan for the deployment of a new firewall.

The firewall is structured around an external filtering router (using NAT)with three(3) interfaces.  The external (public) interface is Internet facing and has a public IP of 120.9.20.1.  The second interface has an IP of 10.1.0.1 and is the gateway to the DMZ network (10.1.0.0).  The third interface has an IP of 10.2.0.1 and is the gateway to the intranet (10.2.0.0). The firewall also acts as a VPN tunnel server on its public Internet interface.

While certain traffic can flow between the DMZ and the intranet, Internet initiated connections should not enter the intranet.  Two sets of filtering rules are applied:  one for traffic flowing in and out of the Internet interface, another for traffic flowing between the DMZ and the intranet.

The DMZ contains the following servers:

  • A publicSecure Web Server (10.1.0.101) that accepts incoming https connections and makes connections to the Oracle Database inside the Intranet
  • The Mail server (10.1.0.102) that accepts POP3 connections from the intranet and initiates and accepts SMTP connections to the Internet

The Intranet contains the following servers:

  • The Oracle Database Server (10.2.0.10) that accepts SQLNet traffic from the Web Server in the DMZ
  • The Intranet Web Server (10.2.0.11) that accepts HTTP traffic ONLY from within the intranet
  • A File Share Server (10.2.0.12) that accepts SMBtraffic ONLY from with the intranet

 


Related Discussions:- Develop firewall rules

Network security course work, doing coursework in Network Security to prese...

doing coursework in Network Security to present a possible solution to the problem at hand by creating a prototype of the new network security infrastructure. This new design shou

Carrier sense multiple access (csma), CARRIER  SENSE MULTIPLE ACCESS (CSMA...

CARRIER  SENSE MULTIPLE ACCESS (CSMA) There is no central access management when computers transfer on Ethernet. For this solution the Ethernet employs CSMA to coordinate tran

What is authentication? explain authentication protocols, What is Authentic...

What is Authentication/confirmation?  How it is different from  the Authorization/approval?  Explain in brief different authentication protocols along with their merits and demerit

The cost benefit analysis (cba) formula, The Cost Benefit Analysis (CBA) Fo...

The Cost Benefit Analysis (CBA) Formula CBA determines that whether the control alternative being evaluated is worth cost incurred to control vulnerability or not. CBA easily ca

Packet filtering firewall-stateless packet filtering, Stateless Packet Filt...

Stateless Packet Filtering Stateless or static packet filtering is the most straightforward kind of packet filtering that allows or disallows data transfer based on the addres

Hashing, Hashing is the transformation of a string of characters into a g...

Hashing is the transformation of a string of characters into a generally shorter fixed-length key or a value that presents the original string. Hashing is used to index and retri

Point-to-point topology, POINT-TO-POINT: In Point-to-Point topology th...

POINT-TO-POINT: In Point-to-Point topology there are two kind of topologies. 1) STAR topology 2) TREE topology In star topology each and every computer is connect

Udp encapsulation, UDP ENCAPSULATION As given in the figure below, UDP...

UDP ENCAPSULATION As given in the figure below, UDP packet is included in IP datagram and the IP datagram is then attached in the Frame.

Meaning of dns - domain name system, What do you understand by the DNS? Exp...

What do you understand by the DNS? Explain the usage of the resource rec or ds. Domain Name System is described below: The Domain Name Service (DNS) is the hierarchi

Routing table, ROUTING TABLE For efficiency, information about forward...

ROUTING TABLE For efficiency, information about forwarding is saved in a routing table, which is started at system initialization and must be updated as network topology modif

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