@meowmere said in What is the best way to protect this network?:
but what does pfSense do in the background to prevent outsiders from entering the network, how do they work exactly?
Dangerous question.
As it shows that you don't know what a firewall is.
pfSense, or the firewall used by the router from your ISP, or any other firewall (router) out there, behave the same way.
IMHO, the fastest way to understand what happens, what this is, a "statefull firewall", install "Youtube", search for "what is a state-full firewall", hit enter, select the videos that have 'zillions' of likes, watch them all, and done.
Be aware, a couple of decades ago you had to visit Havard to know what you know now.
It's as easy as that.
How do they filter outbound and inbound data?
Everything initiated from the outside, also known as the Internet, is blocked.
Everything initiated from the inside, also known as the LAN, is passed.
With you doing nothing more, without changing any settings, without you activating any pfSense "gadgets", if the LAN users behave as real adults, you're job is over.
Keep in mind : it happens a lot : the real security problem of a network can be the admin itself, because he doesn't know what he is doing - or worse, he thinks he does ....
@meowmere said in What is the best way to protect this network?:
I am in desperate need of information
Not that hard to find.
Half the planet is now hooking up his home, small company or what ever else to the Internet.
Everybody has the same question.
The most discussed subject on the Internet is ... not the new car of the neighbor, or who win the elections, but Internet itself and everything related.
It's like playing chess. There is no short cut, not brain implant possible, no miracle solution.
It's the good old ancient process : you have to take some time, sit down, and learn.
