Nothing that you discuss in this post warned a Server.
Configure your system as peer to peer and learn about Internet security.
Here is a little Primer.
As far as Security, it will do nothing to add security.
Router?s NAT Firewall protects you only from casual Hacking, and DDOS attacks.
Hackers are mainly after big cooperate systems.
Router's NAT Firewall does not protect you from:
Trojans and Programs Transmitting Info. from your computer out to the Internet, Viruses, Spyware, Bad Attachments, Browser Hijackers, Winsock Thrashers, Worms, etc.
More here.
Link to:
Basic Protection for Broadband Internet Installation.
Link to:
Internet infestation -Or, how you are getting Internet "Junk" in and compromise your Computer/Network?
Link to:
Basic Steps in cleaning Internet "Junk".
Currently, as far as my Experience shows (this could be different in the future according to new releases of software and free availability of the current ones).
The Best Free Security suit for Windows might be.
Upgrade your Windows XP to SP2. and then use.
1.
Kerio v215.
Kerio is very easy to configure, it is light on resources, and does what need to be done.
Kerio has a newer version of the Firewall; do no get tempted stick with the above it is a better product.
2.
AntiVir Personal Edition.
AntiVir has very high rating for detecting Virus, and does better then other Antivirus program blocking Trojans.
3.
Microsoft AntiSpyb1
It was judged by many independent reviewers as the best of its kind.
Example:
http://www.windowssecrets.com/050127/
The above three are running active in the Background, and have to be installed on all of the computers.
:sun: