Read the manual page for xinetd (by typing
man xinetd at a command prompt) to learn more about these options.
Understanding Attack Techniques
Attacks on computing systems take on different forms, depending on the goal and resources of the
attacker. Some attackers want to be disruptive, while others want to infiltrate your machines and
utilize the resources for their own nefarious purposes. Still others are targeting your data for financial
gain or blackmail. Here are three major categories of attacks:
Denial of Service (DOS)??”The easiest attacks to perpetrate are Denial of Service attacks.
The primary purpose of these attacks is to disrupt the activities of a remote site by overloading
it with irrelevant data. DOS attacks can be as simple as sending thousands of
page requests per second at a Web site. These types of attacks are easy to perpetrate and
easy to protect against. Once you have a handle on where the attack is coming from, a
simple phone call to the perpetrator??™s ISP will get the problem solved.
Distributed Denial of Service (DDOS)??”More advanced DOS attacks are called distributed
Denial of Service attacks. DDOS attacks are much harder to perpetrate and
nearly impossible to stop. In this form of attack, an attacker takes control of hundreds
or even thousands of weakly secured Internet connected computers.
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