Palo Alto Networks, Inc.

Juniper Networks, Inc.

Wilson Xu

Song Wang

Nir Zuk

Monty Sher Gill

Martin Walter

Yuming Mao

William Alan Roberson

Yonghui Cheng

Yan Ke

Suiqiang Deng

Michael Soren Jacobsen

Yueh-Zen Chen

Zhipu Jin

Brian Yean-Shiang Leu

Siu-Wang Leung

Liang Li

William A Roberson

Enforcing a policy based at least in part on URL information is disclosed. A uniform resource locator (URL) is received. A portion of the URL, or a transformation thereof, is matched against a bloom filter. Based on a result of the match, a first query is performed. A policy is enforced based at least in part on a category received as a result of a second query. In some cases, the first and second query are the same.

Using cache and bloom filters for URL lookups

Enforcing a policy is described. Event data generated in response to a device authenticating to a node on a first network is received. A request for a resource that is external to the first network is received from the device. A mapping between an IP address of the device and a user identity is determined, at least in part by using at least a portion of the received event data. A policy is applied to the device based at least in part on the user identity.

Using events to identify a user and enforce policies

Methods, systems, and apparatus, including computer program products, featuring receiving at a network device a plurality of packets associated with a flow, one or more of the plurality of packets having associated header data and content. Based on the content of one or more first packets in the plurality of packets, the network device identifies an application associated with the flow, where none of the first packets is addressed to the network device. For one or more second packets associated with the flow, the network device determines a forwarding destination for the second packets based on the application associated with the flow and forwards the packet according to the determined forwarding destination.

Application based packet forwarding

A security device for processing network flows includes one or more packet processors configured to receive incoming data packets associated with one or more network flows where a packet processor is assigned as an owner of one or more network flows and each packet processor processes data packets associated with flows for which it is the assigned owner; and a packet processing manager configured to assign ownership of network flows to the one or more packet processors where the packet processing manager includes a global flow table containing entries mapping network flows to packet processor ownership assignments. The packet processing manager informs a packet processor of an ownership assignment after one or more packets are received, and the one or more packet processors learns of ownership assignments of network flows from the packet processing manager.

Flow ownership assignment in a distributed processor system

Policy enforcement in an environment that includes virtualized systems is disclosed. Virtual machine information associated with a first virtual machine instance executing on a host machine is received. The information can be received from a variety of sources, including an agent, a log server, and a management infrastructure associated with the host machine. A policy is applied based at least in part on the received virtual machine information.

Policy enforcement in a virtualized environment

A method in a security device for processing network flows includes storing local counter values for one or more events and providing global event counters to maintain event statistics for events in the security device. In one embodiment, the method stores local counter value of an event for each packet processor reporting the event in a counter memory and the method sums the local counter values of an event stored in the counter memory to generate the global counter sum value for the event. In another embodiment, the method compares the global counter sum to a threshold value to put the event in a conforming state or non-conforming state. The method sends a multicast message to the interested packet processors indicating an event has transitioned to a non-conforming state.

Event aggregation in a distributed processor system

Policy enforcement is disclosed. A first identity and second notification are respectively received from a network device at different first and second times. In response to the receipt of the second identity notification, a determination is made that an IP address associated with the network advice has changed from a first IP address to a second IP address. A mapping between an identifier associated with the device and the first IP address is updated to a mapping between the identifier and the second IP address. A policy is updated based on the updated mapping.

Dynamic address policy enforcement

Techniques for configuring and managing remote security devices are disclosed. In some embodiments, configuring and managing remote security devices includes receiving a registration request for a remote security device at a device for configuring and managing a plurality of remote security devices; verifying the registration request to determine that the remote security device is an authorized remote security device for an external network; and sending a response identifying one or more security gateways to the remote security device, in which the remote security device is automatically configured to connect to each of the one or more security gateways using a distinct Layer 3 protocol tunnel (e.g., a virtual private network (VPN)).

Configuring and managing remote security devices

Methods, systems, and apparatus, including computer program products, featuring receiving at a first security device a packet. The first security device determines that the packet is associated with a flow assigned to a distinct second security device. The first security device sends the packet to the second security device. After the second security device performs security processing using the packet, the first security device receives from the second security device a message regarding the packet. The first security device transmits the packet.

Security processing in active security devices

Enforcing a policy is described. A mapping between an IP address of a device and a user identity is identified, at least in part by correlating event information. A policy is applied to the device based at least in part on the user identity. One example of an event is an access to a mail server, such as an access to a Microsoft Exchange server.

Methods and apparatus, including computer program products, implementing and using techniques for processing a data packet in a packet forwarding device. A data packet is received. A virtual local area network destination is determined for the received data packet, and a set of rules associated with the virtual local area network destination is identified. The rules are applied to the data packet. If a virtual local area network destination has been determined for the received data packet, the data packet is output to the destination, using the result from the application of the rules. If no destination has been determined, the data packet is dropped. A security system for partitioning security system resources into a plurality of separate security domains that are configurable to enforce one or more policies and to allocate security system resources to the one or more security domains, is also described.

Internet security system

Policy enforcement in virtualized environment

A security device for processing network flows includes packet processing cards with packet processors formed thereon where each packet processing card stores local counter values for one or more events and a packet processing manager including global event counters to maintain event statistics for events in the security device. In one embodiment, the packet processing manager stores a copy of the local counter value of an event for each packet processor reporting the event in the counter memory and the global event counter provides a global counter sum value for the event by summing the copies of local counter values in the local memory. In another embodiment, the global counter sum is compared to a threshold value to put the event in a conforming state or non-conforming state. The packet processing manager sends a multicast message to the interested packet processors indicating an event has transitioned to a non-conforming state.

Growing community of inventors

San Jose, CA, United States of America

Wilson Xu