Abstract: A method and system for preventing address resolution protocol (ARP) cache poisoning in a network system with multiple hosts. Multiple hosts representing and/or located in separate local area networks (LANS) are tapped (via a shared agreement) to utilize a trusted ARP cache for each LAN represented. Whenever a new ARP response is detected in one network, a request for validation is sent to a separate host in a different network. The separate host initiates a verification process for the ARP, which involves checking whether duplication of one of the IP address or MAC address of the ARP response exists within the address pairings in the ARP cache. If the ARP response is not validated, then the trusted ARP cache is not updated and the system administrator is notified of the failed attempt.

Abstract: A method, apparatus, and computer instructions for use in an operating system for managing requests for files. A request for a switch file from an application is received. The application points to the switch file. Many files may point to the same switch file. Location information for the switch file points to a set of files. A file from the set of files based on system information to form an identified file is identified. The identified file passes to the application. The system information may be already present within the system or passed to the system by a user or process.

Abstract: A method, apparatus, and computer instructions for use in an operating system for managing requests for file. A request for a switch file from an application is received. The application points to the switch file. Many files may point to the same switch file. Location information for the switch file points to a set of files. A file from the set of files based on system information to form an identified file is identified. The identified file passes to the application. The system information may be already present within the system or passed to the system by a user or process.