摘要:
A method for authenticating and negotiating security parameters among two or more network devices is disclosed. The method has a plurality of modes including a plurality of messages exchanged between the two or more network devices. In a main mode, the two or more network devices establish a secure channel and select security parameters to be used during a quick mode and a user mode. In the quick mode, the two or more computers derive a set of keys to secure data sent according to a security protocol. The optional user mode provides a means of authenticating one or more users associated with the two or more network devices. A portion of the quick mode is conducted during the main mode thereby minimizing the plurality of messages that need to be exchanged between the initiator and the responder.
摘要:
A method for authenticating and negotiating security parameters among two or more network devices is disclosed. The method has a plurality of modes including a plurality of messages exchanged between the two or more network devices. In a main mode, the two or more network devices establish a secure channel and select security parameters to be used during a quick mode and a user mode. In the quick mode, the two or more computers derive a set of keys to secure data sent according to a security protocol. The optional user mode provides a means of authenticating one or more users associated with the two or more network devices. A portion of the quick mode is conducted during the main mode thereby minimizing the plurality of messages that need to be exchanged between the initiator and the responder.
摘要:
A method for authenticating and negotiating security parameters among two or more network devices is disclosed. The method has a plurality of modes including a plurality of messages exchanged between the two or more network devices. In a main mode, the two or more network devices establish a secure channel and select security parameters to be used during a quick mode and a user mode. In the quick mode, the two or more computers derive a set of keys to secure data sent according to a security protocol. The optional user mode provides a means of authenticating one or more users associated with the two or more network devices. A portion of the quick mode is conducted during the main mode thereby minimizing the plurality of messages that need to be exchanged between the initiator and the responder.
摘要:
A method and system are provided for implementing a firewall architecture in a network device. The firewall architecture includes a plurality of network layers, a first firewall engine, and one or more callout modules. The layers send packets and packet information to the first firewall engine, maintain and pass packet context to subsequent layers, and process the packets. The first firewall engine compares the packet information to one or more installed filters and returns an action to the layers indicating how to treat the packet. The callouts provide additional functionality such as intrusion detection, logging, and parental control features.
摘要:
A method and system are provided for adding, removing, and managing a plurality of network policy filters in a network device. Filters are installed in a framework and designated as active or disabled. Each filter has a priority. When a new filter is to be installed into the framework, it is compared to installed filters to determine if a conflict exists. If no conflict exists, the new filter is added as an active filter. If a conflict exists, a higher priority conflicting filter is added as active and a lower priority filter is added as inactive.
摘要:
A method and system are provided for adding, removing, and managing a plurality of network policy filters in a network device. Filters are installed in a framework and designated as active or disabled. Each filter has a priority. When a new filter is to be installed into the framework, it is compared to installed filters to determine if a conflict exists. If no conflict exists, the new filter is added as an active filter. If a conflict exists, a higher priority conflicting filter is added as active and a lower priority filter is added as inactive.
摘要:
A method and system are provided for adding, removing, and managing a plurality of network policy filters in a network device. Filters are installed in a framework and designated as active or disabled. Each filter has a priority. When a new filter is to be installed into the framework, it is compared to installed filters to determine if a conflict exists. If no conflict exists, the new filter is added as an active filter. If a conflict exists, a higher priority conflicting filter is added as active and a lower priority filter is added as inactive.
摘要:
A hierarchical key generation and distribution mechanism for a computer system in which devices are organized into secure enclaves. The mechanism enables network access to be tailored to approximate minimum needed privileges for each device. At the lowest level of the hierarchy, keys are used to form security associations between devices. Keys at each level of the hierarchy are generated from keys at a higher level of the hierarchy and key derivation information. Key derivation information is readily ascertainable, either from identifiers for devices or from within messages, supporting hardware offload of cryptographic functions. Because keys may be generated based on the enclaves in which the hosts participating in a security association are located, the system includes a mechanism by which devices can discover the enclave in which they are located.
摘要:
A hierarchical key generation and distribution mechanism for a computer system in which devices are organized into secure enclaves. The mechanism enables network access to be tailored to approximate minimum needed privileges for each device. At the lowest level of the hierarchy, keys are used to form security associations between devices. Keys at each level of the hierarchy are generated from keys at a higher level of the hierarchy and key derivation information. Key derivation information is readily ascertainable, either from identifiers for devices or from within messages, supporting hardware offload of cryptographic functions. Because keys may be generated based on the enclaves in which the hosts participating in a security association are located, the system includes a mechanism by which devices can discover the enclave in which they are located.
摘要:
Some embodiments are directed to processing packet data sent according to a security protocol between a first computer and a second computer via a forwarding device. The forwarding device performs a portion of the processing, and forwards the packet data to a third computer, connected to the forwarding device, for other processing. The third computer may support non-standard extensions to the security protocol, such as extensions used in authorizing and establishing a connection over the secure protocol. The packet data may be subject to policies, such as firewall policies or security policies, that may be detected by the third computer. The third computer sends the results of its processing, such as a cryptographic key, or a detected access control policy, to the forwarding device.