http://www.pcnineoneone.com/howto.intsec.html
Look here for a collection of great links, with tips and advice on how to protect your PC with a firewall.

http://zonelabs.com/
ZoneAlarm is award winning computer security software.� It uses a firewall, a "wall" of code to inspect individual packets of information as it arrives at either side of the firewall and determines whether that information should be allowed to pass or be blocked.�

http://www.ntutility.com/freeware.html
This software allows Windows NT/2000/XP users to monitor all open TCP/IP and UDP ports on the local computer. This program not only allows you to see which process has opened the port, but also allows you to close any port.� �

http://www.sitepronews.com/archives/2003/apr/29.html
This site offers great instruction on how to protect yourself against computer intruders.

http://www.sans.org/resources/glossary.php
For those new to computer security, this site is a complete glossary of terms used in security and intrusion detection.

http://www.nightcats.com/samples/security.html
This article is a reader friendly introduction to securing the PC when using high-speed Internet.

http://www.ftc.gov.bcp/conline/pubs/online/safeonline.htm

http://www.ftc.gov/bcp/conline/pubs/alerts/dialupalt.htm
Safe at Any Speed: How to Stay Safe Online if You Use High-Speed.� These are article published by the Federal Trade Commission to warn the public about the dangers of high-speed Internet and how the public can protect itself.

http://www.engarde.com/consulting/tutorials/intrusion.php
This is a tutorial offered by EGS in Advanced Intrusion Response.

http://nsi.org/Library/Compsec/hackproof.html
Although this article is old (it was originally published in December of 1998), much of the information is still very relevant.

http://netsecurity.about.com/cs/hackers
Here is more information on protecting yourself and your computer from hacking and hackers from the people at About.com�

http://www.computercops.biz/postp11641.html
Computer Cops

http://www.sohoware.com/expl/firewall.htm
This is where to find SOHO firewall protection.

http://www.securityfocus.com/cgi-bin/sfonline/library.pl?cat+160&offset=220
This is an online library archive of articles related to computer security brought to you by Security Focus.
�
http://thedslzone.com/Security.html
This site covers the basics of securing your computer while using a DSL.

http://www.encryptionlink.com/hackers.html
This is an excellent website with advice on how to prevent hacker attacks.

http://www.attackdenied.com
Here are more personal firewall and broadband security tips.

http://www.pcmag.com/article2/0,4149,30795,00.asp
This is a very interesting and informative article on hackers and personal computer security.�

http://www.searchnetworking.techtarget.com/featuredTopic/0,290042,sid7_gci864799,00.html
Reading this website is a good step towards understanding TCP/IP to prevent network attacks.

http://www.redlanternreview.com/WebSecurity.html
Offered by the Red Lantern Review, this website is a practical guide to Internet security.

http://www.mnsi.net/~jhlavac/freeware/security.htm
Here is where you can find PC freeware security tools.�

https://www.grc.com/x/ne.dll?bh0bkyd2
Shields Up will test your Internet connected computer for intrusion vulnerabilities. Click on Test My Shields and Probe My Ports.

http://grc.com/freepopular.htm
This is a large collection of high-quality, super-small and super-fast, freely downloadable programs & resources.

http://scan.sygatetech.com/
This website offers free security scans from Sygate Online Services including: Trojan Scan, Stealth Scan, Quick Scan, ICMP Scan, Full TCP Scan, Full UDP Scan.

http://ecommercecentre.online.wa.gov.au/tools/internet/security.stm
Thus website looks at Internet security risks and solutions - covers email, and also FTP, ICQ, virtual private networks, and websites.

http://www.auditmypc.com/
Lets you audit your firewall with a free online Firewall Test, Port Scan and Privacy Test.� These tests provide immediate results designed to promote security awareness and help secure your firewall.

http://www.sdesign.com/securitytest
This free security check is provided by Secure Design to demonstrate the need for network security. This test will expose many common security holes that exist with major operating systems. In particular, this test will look for windows file sharing security issues. Whether you're connected with a T1, cable modem, DSL, or dialup, you are at risk of being attacked. With some simple precautions however, you can minimize or eliminate your exposure to these attacks. Our Port Scan Security Check is designed to help you discover these problems in order to fix them.

http://www.testmysecurity.com/
Preventon's Scanner Service is a free service supplied, when available, to home users running Microsoft Windows� 98 SE, ME, 2000 and XP, providing an indication of your computer's security, across a range of common attacks. This Scanner Service will run an Internet Port Vulnerability Scan, a NetBIOS scan and attempt to extract user information, and a Trojan Horse/Zombie vulnerability analysis on your computer from the Preventon Server.