SMOOTHWALL FIREWALL By Nitheish Kumarr

INTRODUCTION  Smooth wall Express is a Linux based firewall produced by the Smooth wall Open Source Project Team.  Smooth wall is configured via a web-based GUI, and requires little or no knowledge of Linux to install or use.  Their goal was to create a Linux distribution that could convert a redundant PC into a hardened internet firewall device.

GOALS  Be simple enough to be installed by users with no knowledge of Linux.  Use sponsorship from Smooth Wall Limited to further these goals.  Run efficiently on older, cheaper hardware.

OBJECTIVE  Protect the network with open source software  Maintenance can be done only at the firewall  Can controls internet security

SCOPE  In this project, focus on the firewall internet blocking system by using a redundant pc.  This system will be managed by network administrator.

THE JUSTIFICATION / ADVANTAGES OF THIS PROJECT  It is a special responsibility to protect students from web-borne threats and to promote safe internet use.  It control connectivity to these areas, an organization can prevent unauthorized access to its systems and resources using ids system.  This system require a low specification pc

Hardware  The requirements for this system are Pentium-class Intel- compatible PC running at 200 MHz with at least 32MB and 512MB of disk space. Networking  Need at least 2 network cards (NICs) for your Smooth wall machine.

Software There are many types of firewall software, smooth wall firewall can be adapted in any environment It control the flow of network traffic between networks or hosts for security postures.

TECHNIQUES USED IN SMOOTHWALL i) HIGH PERFORMANCE NETWORK SECURITY ii) EXTERNAL ATTACK DEFENSE iii) LOAD BALANCING

Installation  An Redundant Pc with Low requirements  An 8 port Switch for interconnecting the Pc  Needed at least 2 network cards (NICs) in the Smooth wall machine.  Internet Connection so that the Smooth wall can be used to guard from the Gate of Network.

Smoothwall installation Read the following information carefully and hit enter:

Click OK

Click OK.

In this step Smoothwall will partition the hard disk.

Select “No” and press Enter to start configuring your installation of Smoothwall Express. The Keyboard mapping dialog box opens first:

Click OK. Leave the default settings.

It is time to configure the hostname. Leave the default settings:

Select the Half-open

Select Network configuration

Select the “GREEN+RED” configuration:

Configuring the both network cards.

Use static IP addresses for both interfaces.

Click Static. Please setup the DHCP hostname and Settings accordingly:

Please setup the DNS and Default Gateway accordingly.

Hit Finished to continue.

Enter Smoothwall admin password. You’ll need it for logging into the web interface later.

Setup the root password next.

The setup is now complete.

Monitoring  Smooth wall can be best managed by using its Web based GUI by connecting to it from another local computer on the network.  Maintenance can be done only at the firewall.

Upgrading Network  Plan a logical network design  Design and install a new network or upgrading an existing network.  Gather information about several important factors before beginning the logical design.

Network Implementation of Smooth wall Firewall Project.  Block Website using Smooth wall URL Filter -URL filter is an add-on module for Linux based firewall distributions. Smooth wall, extending their functionality with the ability to block unwanted domains, URLs and files.

 STEP 1: Open the web browser. Type the Smooth wall web address: :441/, then log in to the Smooth wall Express 3.0 system.

 STEP 2: After logging into the system, Smooth wall home will appear.

 STEP 3: Go to Services, then click url filter.

 STEP 4: As you can see, there are some services available in URL filter. Block categories will block the selected categories.

 STEP 5: Now you have to enter the website that you want block. First type the web name in custom blacklist such as “Facebook”. Then type full web address of the URLs like in blocked URLs.

 STEP 6: Type in the Message line for block the website. The message will appear when block the websites.

 STEP 7: The final steps is to save all your settings for block the website. First you must click save and then click save and restart.

 STEP 8: Finally, results of blocking the specific websites. I) Facebook

II) Twitter

III) YouTube

Method Testing A testing method is a definitive procedure of testing every section that produces test results.

Unit Testing Testing of individual hardware or software units or groups of related units of devices that going to be used for this project. The unit/device testing is TP-LINK 10/100 Mbbps PCI Network Adapter.

Testing on Machine i. Test the user's computer to ping the server IP address using command prompt to check the internet connection. ii. Test the firewall whether it can control all the client pc’s. iii. Test the firewall whether it can block certain websites.

Network Testing i) Check the cable whether the modem is connected with the client pc ii) Try to ping server IP address using command prompt. iii) If it is working, the firewall can control the client pc’s.

 Problems /Weakness network i) The Smooth wall network needs two network cards. ii) For Smooth wall network, needs an internet connection.

Problems and Proposed Solution i) Select a Proper Network Design accordingly to the Network to be implemented ii) Prepare a Machine with Low requirements to be setup with Smoothwall and with an Internet Connection to be used.

Results and Achievement  Able to block certain websites  The achievements of this project is the procedure to setup and monitoring a Smooth wall firewall achieved in a small LAN network

The End