Abstract: A messaging system (10) for notifying subscribers of incoming e-mail messages includes an e-mail system (12) communicating with a notification system (14). The e-mail system (12) includes a user interface (22) that permits subscribers to populate filter lists (16) with e-mail message attributes, such as sender e-mail addresses. The filter list (16) is provided to the notification system (14), which selectively notifies subscribers of incoming e-mail messages based on the contents of their respective filter lists. The notification system (14) can alert subscribers to incoming e-mail messages by pager, facsimile, voice mail, synthetic speech via cellular or conventional telephones, or the like.

Abstract: The present invention provides techniques for managing access to storage resources. In specific embodiments, storage devices provide storage resources to users using a system of virtual addresses and virtual volume identifiers. In select specific embodiments, a storage service provider (SSP) can make volumes available to a user, which may be a company, for example, in the user's network via the Internet or other kinds of network connections. In specific embodiments, the SSP and the user's data center can conceal the identity of the storage devices, volumes, and equipment of the SSP, as well as that of the user's data center in order to provide privacy to both user and storage provider.

Abstract: To prevent system crashes, as by denial-of-service attacks, of TCP/IP (Transmission Control Protocol/Internet Protocol) networks, this invention regulates the volume of TCP connection requests that await service at a TCP/IP connection control table. For this purpose, the usage of the system is monitored on a dynamic basis, the time-out value Tho is dynamically computed, and requests that have been awaiting service for a period of time that exceeds Tho are removed from the TCP/IP connection control table.

Abstract: A message exchanging method enables simple interactions between two users during message exchanges and enables one-to-one interactions to shift to interactions between three or more users. Upon receiving a message from a third person while two users are exchanging messages using a messenger, a client machine requests a server to open a chat room. The client that connects to a chat room activates a chat application using the messenger to allow the users to engage in a chat.

Abstract: The present invention provides a system for obtaining and distributing calendar information from one or more calendar sources, as may be defined by a user, in a manner that allows for easy incorporation of the obtained calendar information into a personal or group calendar database. A collection and distribution unit is provided for obtaining calendar information from a predetermined calendar source. If necessary, the collection and distribution unit may convert the obtained calendar information into a predetermined format. Calendar data is distributed by the collection and distribution unit in accordance with preferences specified by a subscriber record.