Internet protocol (IP) address virtualization for terminal server sessions

US9237175B2 · kind B2 · utility

Assignee

• MICROSOFT TECHNOLOGY LICENSING, LLC · US

Inventors

• Huei Chung Wang · Seattle, US
• Nk Srinivas · Issaquah, US
• Ashwin Palekar · Sammamish, US
• Olga B. Ivanova · Redmond, US
• Costin Hagiu · Sammamish, US
• Rouslan Beletski · Kenmore, US
• Sriram Sampath · Redmond, US
• Seema J. Lukose · Redmond, US

Key dates

• Filing date: Dec 22, 2008
• Grant date: Jan 12, 2016
• Expiry date: May 27, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L67/306
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

Techniques are disclosed for virtualizing internet protocol (IP) addresses in terminal server sessions. A client component comprises a layer service provider (LSP) and a name service provider (NSP) that intercept a socket call to associate a port with a socket for a terminal server session. The client component queries a server component for a virtual IP address, and the server component determines whether the terminal server session can use a virtual IP address. Where the session can use a virtual IP address, the server returns a virtual IP address and the client component binds the socket call to the virtual IP address. Where the session cannot use a virtual IP address, the server returns an indication of that, and the client component acts as a proxy for that socket call and any future calls for that socket.