#firewall builder

netfilter Operation: Part Fourteen (Firewall Builder, conclusion)

Adding inbound and outbound NAT rules in Firewall Builder.

As you can probably see, once you have completed the up-front work of defining your objects, adding or modifying rules is simple. Additionally, unlike the other free GUI solutions, Firewall Builder allows you to centrally and securely administer all of your (supported) firewalls from one location.

Notice that the default chains have rules…

netfilter Operation: Part Thirteen (Firewall Builder, continued)

Adding inbound and outbound rules for the web server in Firewall Builder.

In the last article, we discussed the process of setting up a firewall object in Firewall Builder and adding a network to it, as well as adding a web server to the network. This seems like a lot of additional effort; however, the real advantage of an object-oriented approach is seen when it comes time to configure the…

netfilter Operation: Part Twelve (Firewall Builder continued)

Firewall Builder on startup.

In the previous article, I introduced Firewall Builder, including some notes on installation under Windows and Linux. In this article, I will step through the process of adding a firewall object and configuring it.

Firewall Builder: Creating a Firewall Object

In this example, I installed Firewall Builder under Linux Mint. Initially, there are three main options in the…

netfilter Operation: Part Eleven (Easy Firewall Generator and Firewall Builder)

Easy Firewall Generator in action.

Easy Firewall Generator

Easy Firewall Generator is not a GUI per se, but it does help simplify your netfilter configuration and avoid the need to be familiar with the iptables syntax. By using the Web page at http://easyfwgen.morizot.net/gen/index.php, you can enter the relevant information and click the Generate Firewall button. As you select options, if…