"Paulin" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om...
> I meant how can we avoid to be harm through these devices?
>
> thanks
>
> Paulin
Well if you use encryption it makes a good start and deters pretty much all
"casual" wanderers. You will need to set up the same "key" on your router
and also all of the wireless machines on your network. This is fairly easy
to do and the online manual that came with your router will tell you how to
go about this.
This stops people being able to access your own computers and also stops
them using your internet access. If you are after something simple and quick
that is adequate for most people, you can stop here.
Next easy thing to do is an option on most AP's that stops the ID being
broadcast. In theory, unless you know the name of the AP, you cannot get in.
Again easy to do and stops Joe Public who is just nosing around.
Having said all that, even 128 bit encryption and Id masking is not going to
stop someone determined, armed with a handy little program and time on their
hands from getting in. So your next line of defence might be a firewall. If
you know nothing about these at all yet, try going to
http://www.zonelabs.com and downloading their free zonealarm. It's fairly
basic in its free form but it works quite well. This is ALSO an option if
you wanted to stop people accessing your PCs but NOT stop them using the
Internet through you. If you use both encryption AND a firewall it starts to
make life difficult for them.
Zonealarm should be installed on all your computers - and for that you
should not use the free edition - but can use it to evaluate it on one PC.
Now having set your firewall up, the first thing it will do is stop ALL your
computers talking to each other. This however is quickly fixed. Starting
with ALL computers switched off, switch on the "main PC" - if you like the
one connected to the AP, then open zone alarm and look at the log of
"blocked traffic". When you power up the next PC (before you install
zonealarm on it) you will see that as it tries to communicate with the main
pc, the log starts to build up, detailing failed attempts to access your
network. If you then click one of these (will have an Ip like
192.168.2......) and add it to your TRUSTED zone, it will allow further
traffic from that Pc through. Then install zonealarm on the second PC and
again go into the logs and add the 192.169.??? like Ip's to the trusted zone
of that PC - this will then let the two communicate.
If you use an AP only - rather than peer-2-peer - , then you will not need
to keep adding each Pc to each other, only updating the settings on the main
PC and the Pc you are setting up.
I'm sorry this is VERY verbose but if you download zonealarm and READ the
info about it, it should start to make some sense. any specific queries,
come back to us on the ng or bung me an email.
Mark
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