When deciding on a firewall implementation, most Unix-savvy administrators have usually chosen to use ipfilter on OpenBSD for their combination of capabilities and stability, as the capabilities of ...

The Linux kernel includes some of the most powerful and flexible firewall code in any general-purpose operating system. This code is called Netfilter, though most of us refer to it by the name of its ...

WHEN LOOKING for an effective, inexpensive firewall solution, Linux firewalls do not often enter into the picture unless someone involved in the security planning process is a Linux guru. With the ...

I need to set up a firewall using iptables to restrict users by MAC address. I have one ethernet card on my server that is the 'outgoing' line and another that is the 'incoming' traffic from the ...

Building a firewall is something that easily can be done using a Linux machine. This article describes the basic steps involved in developing a firewall from scratch, using tools in Linux. It is ...

This chapter looks at the management of firewalls. From the perspective of the small office/home user, the firewall is a single device that protects the home network from malicious traffic—it keeps ...

In today's open source roundup: Six GUI firewall management applications in Linux. Plus: Linux Lite 2.2 released, and the story of how Kali Linux was created The command line is a powerful tool for ...

Mastering iptables could take a while, but if you have a few rules to cover the basic security needs, you’ll be well on your way to protecting your Linux system. Jack Wallen explains some key rules to ...

i am working thew the book, he recommends: drop all : for both incomming and out bound traffic, isn't this kinda of a real pain?(to block all OUTbound traffic) and what about dynamic ports and stuff?