Blocked Host

The number of requests is determined by a system variable that evaluates the maximum amount of connection errors. When the number has been exceeded, a system’s database will assume that there is a problem, often assuming that a hacker is attempting to intrude. It then prevents access from that location until a user executes a command or statement that flushes out the system. Many intruders and virus writers employ techniques that work around the blocked host security method. They have the ability to produce misleading prompts that appear helpful, but are actually malicious Trojans or spyware. Since the messages usually originate from a separate server or IP address, this type of nuisance can be easily denied access. These same methods can also be applied to certain locations due to parental viewing concerns. The blocked host security function comes built into popular web applications, such as the Google tool bar, but may not function as well as an anti-virus program.