free Ping Trace Who Is?

Think of a firewall like a condom , it can break once and a while but it keeps most of the sperm out... ok its like this. there's a whole lot of data flying around the internet. The Firewall controls traffic. These are the methods it uses to play traffic cop.

• Packet filtering  

• Proxy service 

• Stateful inspection  

There's two types of firewalls Hardware (this is what I'm using right now as they are incredibly secure ) and software such as ZoneAlarm.

This is what it protects you from

• Remote login 

• Application backdoors 

• SMTP session hijacking  

• Operating system bugs 

• Denial of service 

• E-mail bombs 

• Macros 

• Viruses 

• Spam 

• Redirect bombs

• Source routing

• ZoneAlarm (free firewall)

• Test your security with Shields Up!

• Keeping Your Site Comfortably Secure: An Introduction to Internet Firewalls

• Nexland

• Firewall Troubleshooting

• Linux Firewall and Security Site

• The Educated Shopper's Guide to Firewalls

• Firewall Appliances

• Home PC Firewall Guide

• Comprehensive Protocol Directory

• About.com: Firewall Appliances

• Firewalls FAQ

• Dev Tools: Firewall

• Firewall White Paper

• Firewall Testing

• Firewall Product Reviews

• Internet Firewalls and Road Runner Cable Modems

• Cable Modem Basics