Internet Firewalls

Part I of Essay
The Internet is a complex web of interconnected servers and workstations that span the globe, linking millions of people and companies. But there is a dark side: The convenient availability of valuable and sensitive electronic information invites severe misuse in the form o ....

Part II of Essay
.... Anyone intent on gaining access to the Internet can repeatedly make guesses until the right combination is found, a simple but time consuming process made all the easier by programs which systematically try all character combinations until the correct one is eventually generated. User-IDs and passwords can also be trapped by finding security holes in programs; a person looking to abuse the Internet finds these holes and uses the information leaked through them for his or her own personal agenda. Even someone who has been entrusted with hi ....