Join Sean Colins for an in-depth discussion in this video What should you know, part of Firewall Administration Essential Training.
- [Instructor] Just to set expectations, I want to be sure that if you're watching this course that you are in the intended audience group. It'll make you much happier as you go forward. This course was made with new technology professionals who need to understand firewalls in mind. We cover a lot of basic concepts and I dig into the pfSense firewall that we use as our example in ways that allow us to configure firewall rules, to configure traffic shaping, configuring of the performance limiters that are available, scheduling of network operations, et cetera, that all need to be done if you're going to administer a firewall.
We chose to use pfSense as our example firewall because it's open sourced and because it has hundreds of thousands, if not more, installations worldwide. This is an easy software for you to gain access to. You can get it from an open source website and download it and install it on a CF card and put it onto a third-party router if you wish, or you can just buy a router from pfSense directly if that's the way you'd prefer to go. There is a very low cost and a very easy way to access pfSense, you can choose whichever one is best for you.
But this has the widest possible application, I believe, as the largest possible audience will have access to pfSense for use here. Now, that being said, I expect that you're probably very, very new to firewalls. And so I cover things without jumping over acronyms and without jumping over basic tech concepts, so you may find that there are points in this course where I'm saying things that you already know. If that's the case, don't worry about it. Just listen through, and I'll get to the parts that you don't know very quickly. Also, there are a lot of things that are not covered in this course.
Things about basic TCP/IPv4 networking. And if that's the case, I do have a movie a little later on where I recommend some other courses where you can learn more about networking and other basics that are fundamental to understanding the foundations before you get to a firewalling course such as this one. I hope that helps you to understand who you should be as you are watching this course.
- DMZs and bandwidth needs
- Routing configuration
- Setting up a virtual IP
- Network address translation (NAT)
- Providing DHCP
- Traditional IP firewalls (IPFW)
- Configuring deny rules to block file sharing
- Promoting application specific traffic
- Configuring an IP alias and a port alias
- Building traffic limiters