Abstract: Methods, systems and computer program products are provided for selectively allowing a user of a multi-user system access to a plurality of resources in a network. Pursuant to these methods, systems and computer program products, a request, originated by a user of the multi-user system, may be received to transmit a message over the network to one of the plurality of resources in the network. A security zone associated with this resource may then be identified. Pursuant to the operations of the present invention, if it is determined that the user is authorized access to the identified security zone, the message may be forwarded over the network to the resource.

Abstract: Improvements in intrusion detection are disclosed by providing intrusion event filtering and/or generic attack signature processing. These services may be integrated into a system or server that is the potential target of attack, or alternatively may be implemented in a network device. Filtering may be provided using sensitivity levels and suspicion levels. Generic attack signatures describe relatively broad classes of intrusions. Intrusion detection policy information may be used to direct the actions to be taken upon detecting an attack.

Abstract: Improvements in intrusion detection are disclosed by providing integrated intrusion detection services. Preferably, these services are integrated into a system or server that is the potential target of attack. Stack-based security processing is leveraged for access to cleartext data within the layers of the protocol stack. Layer-specific attacks may therefore be processed efficiently. Evaluation of incoming traffic for an intrusion is preferably performed only after an error condition of some type has been detected. This approach reduces the overhead of intrusion detection by reducing the number of packets to be inspected, and at the same time allows more efficient packet inspection through use of context-specific information that may be used to direct the inspection to particular candidate attacks. Generic attack class capability is also disclosed. Intrusion detection policy information may be used to direct the actions to be taken upon detecting an attack.

Abstract: Improvements in intrusion detection are disclosed by providing integrated intrusion detection services. Preferably, these services are integrated into a system or server that is the potential target of attack. Stack-based security processing is leveraged for access to cleartext data within the layers of the protocol stack. Layer-specific attacks may therefore be processed efficiently. Evaluation of incoming traffic for an intrusion is preferably performed only after an error condition of some type has been detected. This approach reduces the overhead of intrusion detection by reducing the number of packets to be inspected, and at the same time allows more efficient packet inspection through use of context-specific information that may be used to direct the inspection to particular candidate attacks. Generic attack class capability is also disclosed. Intrusion detection policy information may be used to direct the actions to be taken upon detecting an attack.

Abstract: Improvements in intrusion detection are disclosed by providing intrusion event filtering and/or generic attack signature processing. These services may be integrated into a system or server that is the potential target of attack, or alternatively may be implemented in a network device. Filtering may be provided using sensitivity levels and suspicion levels. Generic attack signatures describe relatively broad classes of intrusions. Intrusion detection policy information may be used to direct the actions to be taken upon detecting an attack.

Abstract: Methods, systems and computer program products are provided for selectively allowing a user of a multi-user system access to a plurality of resources in a network. Pursuant to these methods, systems and computer program products, a request, originated by a user of the multi-user system, may be received to transmit a message over the network to one of the plurality of resources in the network. A security zone associated with this resource may then be identified. Pursuant to the operations of the present invention, if it is determined that the user is authorized access to the identified security zone, the message may be forwarded over the network to the resource.