Rightsizing, in the context of IT, refers the process of restructuring or reorganzing a company's IT infrastructure, networking, storage, data centers, hardware or other critical components in an effort to get the highest possible value from those services. Rather than focusing on cutting costs or expanding service, rightsizing aims to look at...
A denial-of-service (DoS) is any type of attack where the attackers (hackers) attempt to prevent legitimate users from accessing the service. In a DoS attack, the attacker usually sends excessive messages asking the network or server to authenticate requests that have invalid return addresses. The network or server will not be able to find the return address of the attacker when sending the authentication approval, causing the server to wait before closing the connection. When the server closes the connection, the attacker sends more authentication messages with invalid return addresses. Hence, the process of authentication and server wait will begin again, keeping the network or server busy.
A DoS attack can be done in a several ways. The basic types of DoS attack include:
Another variant of the DoS is the smurf attack. This involves emails with automatic responses. If someone emails hundreds of email messages with a fake return email address to hundreds of people in an organization with an autoresponder on in their email, the initial sent messages can become thousands sent to the fake email address. If that fake email address actually belongs to someone, this can overwhelm that person's account.
DoS attacks can cause the following problems:
Read More »
Join 138,000+ IT pros on our weekly newsletter
Home | Advertising Info | Write for Us | About | Contact Us
2010 - 2014
Janalta Interactive Sites: