What is a Denial-of-Service attack?
A Denial-of-Service attack (DoS attack) is an attempt to make a computer resource unavailable to its intended users. Although the means to carry out, motives for, and targets of a DoS attack may vary, it generally consists of the concerted efforts of a person or people to prevent an Internet site or Web service from functioning efficiently or at all, temporarily or indefinitely. Perpetrators of DoS attacks typically target sites or services hosted on high-profile web servers such as banks, credit card payment gateways, and even root nameservers. In terms of VoIP telephony, DoS attacks can overwhelm a company’s phone lines, creating long-term busy signals, forcing calls to disconnect. What is SPIT? SPIT or SPAM over Internet Telephony is the proliferation of unwanted, automatically-dialled, pre-recorded phone calls using VoIP. VoIP systems, like email and other Internet applications, are susceptible to abuse by malicious parties who initiate unsolicited and unwanted communications. Tele
