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Firestarter | Linux App Finder

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an inbound rule for the Samba service which opens ports 137, 138, 139, and 445 for TCP and UDP packets. It is reasonable to

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Secure Ubuntu Desktop with Firestarter Firewall

Mon, 19 Mar 2007 12:44:15 -0700

Firestarter is an Open Source visual firewall program. The software aims to combine ease of use with powerful features, therefore serving both Linux desktop users and system administrators.

Current Stable :- 1.0.3

Project Hone Page :- http://www.fs-security.com/

Firestarter Features

Open Source software, available free of charge
User friendly, easy to use, graphical interface
A wizard walks you through setting up your firewall on your first time
Suitable for use on desktops, servers and gateways
Real-time firewall event monitor shows intrusion attempts as they happen
Enables Internet connection sharing, optionally with DHCP service for the clients
Allows you to define both inbound and outbound access policy
Open or stealth ports, shaping your firewalling with just a few mouse clicks
Enable port forwarding for your local network in just seconds
Option to whitelist or blacklist traffic
Real time firewall events view
View active network connections, including any traffic routed through the firewall
Advanced Linux kernel tuning features provide protection from flooding, broadcasting and spoofing
Support for tuning ICMP parameters to stop Denial of Service (DoS) attacks
Support for tuning ToS parameters to improve services for connected client computers
Ability to hook up user defined scripts or rulesets before or after firewall activation
Supports Linux Kernels 2.4 and 2.6

Install Firestarter in Ubuntu

If you want to install firestarter firewall run the following commannd

sudo apt-get instal firestarter

This will complete the installation

If you want to open fire starter go to System--->Administration--->Firestarter

For the first time you should see the following screen and click on forward

Select Network Device setup and click on forward

Select if you have any internet connection sharing and click on forward

Here you need to click on check box next to start firewall now and click on save

Now you should see the firestarter GUI like below

Every time firestarter starting GUI it will prompt for root password may be this is bit difficult for this you can do the following steps to avoid password.

export EDITOR=gedit && sudo visudo

Now you need to add the following line in /etc/sudoers file

%ruchi ALL= NOPASSWD: /usr/sbin/firestarter

Replace %ruchi by your the name of the user or the group which can use sudo and do the modification.

Now you can test this using the following procedure

sudo - K

sudo /usr/sbin/firestarter

When it try to open it should not prompt for password

Finally you need to add firestarter to startup programs list from system---> Preferences--->Sessions you should see the following screen in this you need to click on startup programs and click on add you should see a popup box prompting for startup command in this you need to enter the following command and click ok two times.

sudo /usr/sbin/firestarter

Working with Firewall Policy

Firestarted is having default policy does the following

New inbound connections from the Internet to the firewall or client hosts are blocked.

The firewall host is freely allowed to establish new connections.

All client hosts are allowed to establish new connections to the Internet, but not to the firewall host.

Traffic from the Internet in response to connection requests from the firewall or client hosts is allowed back in through the firewall.

This policy allows normal Internet usage such as web browsing and e-mail on the secured hosts, but blocks any attempts to access network services from the outside and shields the local network.

Creating your own Policy

Before Creating new policy you need to know inbound and outbound policy

Inbound policy

All inbound network traffic that is not in response to a connection established by a secured host is always denied. User created inbound policy is therefore permissive by nature and consist of criteria that when met lift the restrictions on the creation of new incoming connections. Changes to inbound policy are made on the inbound policy section of the policy page in Firestarter.

Outbound policy

The purpose of outbound traffic policy is to specify the types of network traffic that are allowed out from the secured network to the Internet. Firestarter has two modes of operation when it comes to implementing outbound policy, a permissive (which is the default) and a restrictive mode.

If you wan to create new policy you need to click on policy tab in this you need to make sure which policy you want in editing selection (inbound or outbound) in this example i have selected inbound traffic policy after that from the top menu click on policy and click on add you should see this in the following screen

Now it will popup a box asking for allow coonections from ip,host or network,enter the comment and click on add

The same way you need to add the outbound traffic policy you can see this in the following screen

Firestarter version details

For more detailed documentation check Firestarter usermanual here

Start Firestarter at boot

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Samba and Firestarter - the real story - Ubuntu Forums

Mon, 06 Nov 2006 16:17:39 -0800

Secure Ubuntu Desktop Using Firestarter Firewall

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Firestarter is an Open Source visual firewall program. The software aims to combine ease of use with powerful features, therefore serving both Linux desktop users and system administrators. Install Firestarter in Ubuntu If you want to install firestarter firewall run the following commannd sudo apt-get instal firestarter This will complete the installation If you want to open fire starter go [...]

Samba and Firestarter - the real story - Ubuntu Forums

Thu, 28 Sep 2006 07:28:21 -0700