Label: On most OS this is not used and serves the purpose of a descriptive label.This will be something like "eth0", "eth1", "en0", "br0" and so on. Name: the name of the interface object in Firewall Builder must match exactly the name of the interface of the firewall machine it represents.The interface object has several attributes that define its function, such as "Management interface", "external" etc. You should reconfigure the addresses of interfaces to match those used on your network and most likely will have to adjust rules to match your security policy. This configuration is intended as a starting point only. Note that the template firewall object comes completely configured, including addresses and netmasks of its interfaces and some basic policy and NAT rules. Click "Next" to move on to the next page of the wizard. We are using one of the standard templates in this guide and therefore leave standard template library path and name in the "Template file:" input field. The latter is useful when administrator wants to distribute a library of predefined templates to other users in the enterprise. Template can be taken from the library of template objects that comes with the Firewall Builder package or from a file provided by the user. To do this, check checkbox "Use preconfigured template firewall objects". This tutorial demonstrates the first method (using a template object). There are two ways a new firewall can be created: you can use one of the preconfigured template firewall objects or create it from scratch. In the first page of the wizard you can enter the name for the new firewall object (here it is "guardian"), its platform ("iptables") and host OS ("Linux"). The program presents wizard-like dialog that will guide you through the process of creation of the new firewall object. You can always open this dialog later using an item in the main menu "Help". This works the same on all supported OS: Linux, Windows and Mac OS X. Clicking on the link in the dialog opens the corresponding web page in your web browser. The dialog provides links to the project web site where you can find tutorials, FAQ, the Firewall Builder CookBoook and other documentation, as well as bug tracking system and links to user forums and mailing list. The program starts and opens the main window and greeting dialog. If the system menu item is not there or you have built the program from source, you can always launch it from the command line by just typing "fwbuilder" on the shell prompt: $ fwbuilder Pre-built binary packages and source code archives can be downloaded from from this page. deb packages offered on the project's web site or build from source using our online installation instructions. If you want to try the latest version, you can use pre-built binary. Packages shipping with Debian and Ubuntu are always one or two minor revisions behind. On FreeBSD and OpenBSD Firewall Builder is part of ports, you can find it in /usr/ports/security/fwbuilder. Use apt-get or aptitude to find and install them: # aptitude install libfwbuilder fwbuilder You need to install the fwbuilder and libfwbuilder packages. If it is not there, then it probably needs to be installed on your system. To start the program, find it in the "System/Administration" menu. Packages for the current development builds are available from the project download area on SourceForge The program runs on Linux, FreeBSD, OpenBSD, Windows and Mac OS X and can manage both local and remote firewalls.įirewall Builder is available from the libfwbuilder and fwbuilder packages in both Debian and Ubuntu (in Universe). Both professional network administrators and hobbyists managing firewalls with policies more complex that is allowed by simple web based UI can simplify management tasks with the application. This article introduces "Firewall Builder", a GUI firewall configuration and management tool designed to help solve this problem.įirewall Builder (also known as fwbuilder) is a GUI firewall configuration and management tool that supports iptables (netfilter), ipfilter, pf, ipfw, Cisco PIX (FWSM, ASA) and Cisco routers extended access lists. GUI applications such as Firestarter can help build simple configuration but quickly run out of steam when security policy becomes complex. If you do it by hand, you need to learn a complicated command line syntax and understand packet flow inside Linux kernel very well. Configuring a firewall policy using iptables can be difficult.
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