Most firewall systems contain a Web-based component that allows you to configure the firewall. This holds true for most entry-level firewall systems (Linksys, D-Link, etc.) and also open source firewall systems such as pfSense. These systems tend to provide ways to access the Web interface remotely via the Internet; however, this should not be considered secure at all.

This article continues the series of articles on Fireall Builder, a graphical firewall configuration and management tool that supports many Open Source firewall platforms as well as Cisco IOS access lists and Cisco ASA (PIX).

You should install a firewall to protect your computer against unauthorized access by blocking connections to your computer from unknown sources,to prevent security breaches.This is a tutorial on setting up a firewall on Ubuntu to regulate connections to your computer.

SSH (Secure SHell) is possibly the best way to remotely access a Unix system - it's very secure thanks to automatic encryption of all the traffic, and it's also quite universal because you can do all sorts of things: access remote command line shell, forward graphics session output, establish network tunnels and set up port redirections.

The secure shell is much more than a simple way to keep your passwords to yourself. For instance, it's possible to tunnel ports you may not have access to (if the machine is behind a firewall) through the SSH port. SSH makes it possible to run remote graphical sessions easily. You can even securely log in without a password. SSH is a veritable Swiss Army knife of OS toys.

Many that play PC games, such as battle.net, need to be able to set up port triggering. Typical "hardware" routers have the ability to set this up from online menus. However, using a Linux PC to perform your router functions can provide much more control and versatility than can be realized with a "hardware" router.

Australians would be unable to access the internet without having anti-virus and firewall programs installed and a virus-free machine under a new plan put forward by a year-long parliamentary cyber-crime inquiry.

How many times has this happened to you: you want to access a remote server, but you can't because it is behind a firewall? I frequently found myself in such a situation when I needed to access my Internet-connected server running Linux, so I thought of a system where I could start controlling my server remotely via a simple email.

A stealth firewall provides a way to gain access to filtering Internet traffic from a position of stealth. A bridge provides stealth because it does not use an IP Address to function but rather operates at the Layer 2 of the OSI model meaning that without an IP Address the firewall is inaccessible and hidden from all would be attackers.