Abstract: A virtual firewall construction method based on an OpenStack framework, and a storage medium. The method includes: modifying a firewall rule of a target data packet service according to a preset rule, and obtaining a modified target data packet service, the modified target data packet service utilizes the modified firewall rule to perform data packet control, and a forwarding stack is provided in the modified target data packet service, a forwarding performance of the forwarding stack is higher than the forwarding performance of a routing service of the OpenStack framework; a firewall configuration interface is provided in the firewall rule of the modified target data packet service, and the firewall configuration interface is configured to, according to different users under different virtual networks, set a data packet processing rule meeting requirements of the users; and replacing the routing service of the OpenStack framework according to the modified target packet service.

Abstract: The present invention relates to a thermoplastic polyurethane composition and use thereof. The thermoplastic polyurethane composition comprises a polyurethane prepared from a polyester polyol and a polyisocyanate as well as an antioxidant. The thermoplastic polyurethane composition of the present invention can be used with other thermoplastic polymers in melt spinning process to prepare bicomponent fibers.