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cs393lab7 - CS 393 Lab 7 Zhou HuanXian 0225418 Firewalling...

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Unformatted text preview: CS 393 Lab 7 Zhou, HuanXian 0225418 Firewalling 1.0 Introduction A traditional packet filter is one of the basic protection mechanisms for a network. This type of firewall can be installed and configured in several ways, depending upon the level of protection needed. In this assignment, you will explore how to configure a firewall. As usual, you will be using Linux as your base operating system; you’ll use iptables to make it act as a firewall. Prerequisites: Read about iptables from the following links: http://ww w .tldp.org/HOW T O/IPCHAINS-HOW T O.html https://help.ubuntu.com/community/IptablesHow T o http://ww w .linuxhomenetworking.com/wiki/index.php/ Quick_HOWTO_:_Ch14_:_Linux_Firewalls_Using_iptables A firewall configuration tool can be found at: http://easyfwgen.morizot.net/ 2.1 Lab Setup This lab consists of an internal machine and firewall running iptables along with external machines running WinXP, Linux and Backtrack. See diagram below. For the purposes of this lab we won’t be using the router at 10.10.111.1 nor the “fakebook” web server. However, you are welcome to use these machines for testing if you wish. All Firewall and NAT operations must be performed on the 10.20.111.1 firewall. If you perform the operations on the other firewall you will receive zero points. PAGE I OF 4 CS6823 - NEWORK SECURITY - LAB 7 PAGE 2 OF 4 CS6823 - NEWORK SECURITY - LAB 7 2.2 Part A Configure the iptables firewall on the network firewall machine to implement the following firewall policy: For outgoing traffic (from inside to outside) - your internal machine should be able to comunicate with the external network and the external machines without restrictions....
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This note was uploaded on 11/02/2010 for the course CS 393 taught by Professor Staff during the Spring '08 term at NYU Poly.

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cs393lab7 - CS 393 Lab 7 Zhou HuanXian 0225418 Firewalling...

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