Security system and method for computers connected to network

A security system for a network including a plurality of computers connected thereto, each computer comprising:

• an internal status monitor unit for monitoring an internal status of said computer to detect an occurrence of a fault and a type of said fault occurred in said computer;
• an access control unit for controlling access to resources of said computer;
• a memory containing destination information of other computers on said network in accordance with the type of said fault occurred in said computer;
• and
• an information transmission unit for obtaining the destination information from said memory in accordance with the type of said fault occurred in said computer, and for transmitting, through said network, to at least one other computer on said network a message indicating the occurrence of said fault in said computer and the type of said fault occurred in said computer in accordance with the destination information obtained from said memory, said information transmission unit further receiving from said other computer over said network a message indicating the occurrence of a fault and the type of said fault occurred in said other computer, and wherein said access control unit executes processing for protecting the resources of said computer in accordance with either the type of said fault occurred in said computer or the type of said fault indicated by a message received from said other computer over said network.

A security system for a network including a plurality of computers connected to an internal network, and at least one computer connected to an external network, said one computer comprising:

• an internal status monitor unit for monitoring an internal status of said one computer to detect an occurrence of a fault and a type of said fault occurred in said one computer;
• an access control unit for controlling access to resources of said one computer to protect the resources from intrusion in accordance with the type of said fault occurred in said one computer;
• a memory containing destination information of other computers on said internal network in accordance with the type of said fault occurred in said one computer;
• and
• an information transmission unit for obtaining the destination information from said memory in accordance with the type of said fault occurred in said one computer, and for transmitting a message to at least one other computer on said internal network indicating the occurrence of said fault and the type of said fault occurred in said one computer in accordance with the destination information obtained from said memory, and
• said other computer including an information transmission unit for receiving the message transmitted from said one computer on said internal network.

A network security method for a network implemented by one computer from a plurality of computers connected to said network, comprising the steps of:

• a) monitoring an internal status of said one computer to detect an occurrence of a fault and a type of said fault occurred in said one computer;
• b) executing access control processing to protect resources of said one computer in accordance with the type of said fault occurred in said one computer;
• and
• c) obtaining destination information from a memory in accordance with the type of said fault occurred in said one computer, and transmitting through said network a message to at least one other computer from said plurality of said computers on said network indicating the occurrence of a fault and the type of said fault occurred in said one computer in accordance with the destination information obtained from said memory.

A network security method implemented by one computer connected to at least one external network from a plurality of computers connected to an internal network, comprising the steps of:

• a) monitoring an internal status of said one computer and detecting an occurrence of a fault and a type of said fault occurred in said one computer;
• b) executing access control processing for protecting resources of said one computer in accordance with the type of said fault occurred in said one computer;
• and
• c) obtaining destination information from a memory in accordance with the type of said fault occurred in said one computer, and transmitting through said internal network a message indicating the occurrence of a fault and the type of said fault occurred in said one computer to at least one other computer from said plurality of said computers on said internal network in accordance with the destination information obtained from said memory.