Join Mike Meyers for an in-depth discussion in this video Introduction to firewalls, part of CompTIA Network+ Exam Prep (N10-006) Part 7: Managing the Network.
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- Everybody's heard the word firewalls.…The problem is, is firewalls are one of those terms…that gets mixed-up all over the place.…How many people have heard the term,…oh, my firewall and my router…or you're talking about your individual computer…and you've got Windows firewalls.…So, we talk about firewalls all the time,…but what I want to do is talk about what firewalls are,…and the best place to start…is understanding where firewalls live.…So, what I want to begin with…is my little network here.…So, this is a home network and I've got some computers here…that are hooked to a switch, and this is a router.…
Now, a firewall, by definition,…is something that filters traffic based by criteria.…Now, we usually think about filtering in terms of…filtering by IP address and ports,…but they can do more than that.…I don't want to concentrate so much on what it's filtering.…Right now I just want you to go, OK Mike it filters,…but let's talk about where firewalls live.…So, here in this little network what I want to do is…
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