Setting Up Security For A NETGEAR DG834G Wireless Router?

During the past week I have connected both my Macs to my new Netgear router with Ethernet cables.
My son, in another part of the house, connects wirelessly. It took a few hours (off and on) to connect his Windows Laptop to the internet and finally get his email working.
When we initially set it up, the router was broadcasting its name to the world.
I have now switched off the broadcasting of the name.
What level of security is this?
Are my 2 wired-in computers fairly safe?
I believe that his transmissions could be picked up, but as he has no financial or sensitive material I don't think that would be too serious - or would it?
We live in a quiet cul-de-sac where any strange people or cars would be noticed immediately, so we are probably not so vulnerable to wireless-hackers as others might be. Or am I living in a "fool's paradise"?
The Netgear has details of numerous security systems that can be enabled, but as with most computer instructions they are written for experts saying WHAT it can do and not for beginners saying HOW to do it?
Does anyone know where I might be able to get hold of some reasonably simple, step by step instructions.
I am hesitant to go ahead on my own as I am worried that I might mess-up the internet connection I have struggled so hard to achieve!
Ian.

Ian,
As a general statement, wireless networks are inherently insecure.
"I have now switched off the broadcasting of the name.
What level of security is this?
If this is all you have done, roughly speaking, your network is just as
(in)secure as it was when you plugged in the router.
Do you have file or printer sharing turned on? Are your Mac firewalls
stealthed and refusing UDP packets? Will the router accept any inbound
request for an internet connection? Have you changed the default password
on the router?
The answers to these questions speak to the relative (in)security of your
Macs.
Is your son using any form of encryption, say, WEP, or, preferably, WPA?
If not, your network is less secure.
"We live in a quiet cul-de-sac where any strange people or cars would be noticed immediately, so we are probably not so vulnerable to wireless-hackers as others might be. Or am I living in a "fool's paradise"?"
Yes, and here's why.
"Does anyone know where I might be able to get hold of some reasonably simple, step by step instructions."
I was going to suggest reading the router's manual, but it is pure and utter
fertilizer. Looks as though a marketroid (who knows some buzzwords but
not their meanings) patched that monstrosity together using the user
menu storyboard walk-through and a lot buzzword-laden filler "lifted"
from the Web.
Would it be humanly possible to run an ethernet cable from your router to
where your son computes and turn off the wireless?
Since I don't own one, I can't help with a primer on securing it. Sorry.
-Wayne

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