IDS vs. IPS

- I've got a little network right here.…So this yellow box is gonna be my switch,…and these individual little cylinders…are gonna be my hosts.…And this guy right here is my connection to the internet.…So he's just gonna be at this moment,…well, just a router.…Now, when we look at this network,…it's really, really, important to us…that, well, we don't let naughty things…happen to our network.…So within the internet world,…the first line of defense is going to be a firewall.…

Now the firewall's main job is to prevent…naughty things from the outside world…coming into our network.…So traditionally a firewall is going to be right here.…So that's why so many routers…also have built-in firewall features.…Now, a router doesn't have to have that.…If we wanted to, we could go out and buy…a specialized firewall device.…And now we can have our router…and then our firewall as its own separate device.…Barracuda, Pinnacle, a lot of people will…sell you a box like this.…

And this thing is being updated,…so it's always aware of evil things that are out there.…