Abstract:
Techniques are described for managing communications for a managed computer network by using a defined pool of alternative computing nodes of the managed computer network that are configured to operate as intermediate destinations to handle at least some communications that are sent by and/or directed to one or more other computing nodes of the managed computer network. For example, a manager module associated with a source computing node may select a particular alternative intermediate destination computing node from a defined pool to use for one or more particular communications from the source computing node to an indicated final destination, such as based on a configured logical network topology for the managed computer network and/or on one or more other selection criteria (e.g., to enable load balancing between the alternative computing nodes). The manager module then forwards those communications to the selected intermediate destination computing node for further handling.
Abstract:
Techniques are described for providing managed computer networks, such as for managed virtual computer networks overlaid on one or more other underlying computer networks. In some situations, the techniques include facilitating replication of a primary computing node that is actively participating in a managed computer network, such as by maintaining one or more other computing nodes in the managed computer network as replicas, and using such replica computing nodes in various manners. For example, a particular managed virtual computer network may span multiple broadcast domains of an underlying computer network, and a particular primary computing node and a corresponding remote replica computing node of the managed virtual computer network may be implemented in distinct broadcast domains of the underlying computer network, with the replica computing node being used to transparently replace the primary computing node in the virtual computer network if the primary computing node becomes unavailable.
Abstract:
Systems and method for the management of virtual machine instances are provided. A network data transmission analysis system can use contextual information in the execution of virtual machine instances to isolate and migrate virtual machine instances onto physical computing devices. The contextual information may include information obtained in observing the execution of virtual machines instances, information obtained from requests submitted by users, such as system administrators. Still further, the network data transmission analysis system can also include information collection and retention for identified virtual machine instances.
Abstract:
A distributed computing environment utilizes a cryptography service. The cryptography service manages keys securely on behalf of one or more entities. The service may utilize multiple security modules. A coordinator may coordinate the security modules to ensure that the security modules operate with consistent operational parameters. A security module may propose a set of parameters for acceptance by the coordinator. If accepted, the coordinator may update the security modules in accordance with the proposal.
Abstract:
Data payloads that may not be accessible to customer computing devices may be utilized to verify network address ownership. In some examples, a first payload may be provided to a computing device having an address. Additionally, a second payload may be received from the computing device. Based at least in part on a relationship between the first payload and the second payload, an action associated with the address may be performed.
Abstract:
A service proxy services as an application programming interface proxy to a service, which may involve data storage. When a request to store data is received by the service proxy, the service proxy encrypts the data and stores the data in encrypted form at the service. Similarly, when a request to retrieve data is received by the service proxy, the service proxy obtains encrypted data from the service and decrypts the data. The data may be encrypted using a key that is kept inaccessible to the service.
Abstract:
A trusted computing host is described that provides various security computations and other functions in a distributed multitenant and/or virtualized computing environment. The trusted host computing device can communicate with one or more host computing devices that host virtual machines to provide a number of security-related functions, including but not limited to boot firmware measurement, cryptographic key management, remote attestation, as well as security and forensics management. The trusted computing host maintains an isolated partition for each host computing device in the environment and communicates with peripheral cards on host computing devices in order to provide one or more security functions.
Abstract:
A delegation request is submitted to a session-based authentication service, fulfillment of which involves granting an entity an access privilege to a computing resource. A session key is received from the session-based authentication service. The session key having been generated based at least in part on a restriction and a secret credential shared with the session-based authentication service and usable at least in part to prove possession of the access privilege to the computing resource. The session key is provided to the entity without providing the shared secret credential.
Abstract:
Techniques are described for providing managed virtual computer networks that have a configured logical network topology with virtual networking devices, such as by a network-accessible configurable network service, with corresponding networking functionality provided for communications between multiple computing nodes of the virtual computer network by emulating functionality that would be provided by the virtual networking devices if they were physically present. In some situations, the networking functionality provided for a managed computer network of a client includes receiving routing communications directed to the virtual networking devices and using included routing cost information to update the configuration of the managed computer network, and/or includes determining actual cost information corresponding to use of an underlying substrate network and providing routing cost information to the client that reflects the determined actual cost information, so as to enable the client to modify the configuration of the managed computer network accordingly.
Abstract:
Techniques are described for providing logical networking functionality for managed computer networks, such as for virtual computer networks provided on behalf of users or other entities. In some situations, a user may configure or otherwise specify a network topology for a virtual computer network, such as a logical network topology that separates multiple computing nodes of the virtual computer network into multiple logical sub-networks and/or that specifies one or more logical networking devices for the virtual computer network. After a network topology is specified for a virtual computer network, logical networking functionality corresponding to the network topology may be provided in various manners, such as without physically implementing the network topology for the virtual computer network. In some situations, the computing nodes may include virtual machine nodes hosted on one or more physical computing machines or systems, such as by or on behalf of one or more users.