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

Limitations of firewall, Limitations of firewall Firewalls cannot prote...

Limitations of firewall Firewalls cannot protect a network if security rules are not followed properly by an organization or if the rules are not defined properly. Firewalls ar

Limitations of ethical dilemma, The best results obtained in the PIIT class...

The best results obtained in the PIIT classes have been when the technique has been used in tutorial groups, rather than have students submit individual reflections on particular c

Network, what is computer network?

what is computer network?

Udp interaction, UDP INTERACTION  UDP follows four kinds of interactio...

UDP INTERACTION  UDP follows four kinds of interaction 1-to-1: One application can interact with one application. 1-to-many: One application can interact with many

Ip datagram, IP DATAGRAM Various options can be included to IP header,...

IP DATAGRAM Various options can be included to IP header, e.g., source route, record route and timestamp. Header with no function has H. LEN field value 5; data starts immedia

Determine the codeword which is transmitted using crc, Question (a) For...

Question (a) For the bit stream 010011, show the waveforms for each of the code indicated. Consider that the signal level for NRZ-L for mark is positive; the signal level for t

Softbank theft of consumer data -information security, Example : Softbank –...

Example : Softbank – theft of consumer data for extortion Softbank of Japan offers broadband Internet services across Japan through 2 subsidiaries – Yahoo! BB and Softbank BB. I

CS, Discuss how developers should apply the following countermeasures to im...

Discuss how developers should apply the following countermeasures to improve the security of their code:

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