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US006738909B1
(12) United States Patent ao) Patent No.: us 6,738,909 Bi
Cheng et al. (45) Date of Patent: May 18,2004
(54) METHOD AND APPARATUS FOR
AUTOMATIC CONFIGURATION FOR
INTERNET PROTOCOL SECURITY
TUNNELS IN A DISTRIBUTED DATA
PROCESSING SYSTEM
(75) Inventors: Pau-Chen Cheng, Yorktown Heights,
NY (US); William Alton Fiveash,
Austin, TX (US); Vachaspathi Peter
Kompella, Cary, NC (US); Christiaan
Blake Wenzel, Austin, TX (US);
Jacqueline Hegedus Wilson, Austin,
TX (US)
(73) Assignee: International Business Machines Corporation, Armonk, NY (US)
( * ) Notice: Subject to any disclaimer, the term ol this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
(21) Appl. No.: 09/389,199
(22) Filed: Sep. 2, 1999
(51) Int. C I. 11041. 9/32
(52) U.S. CI 713/201; 709/223
(58) Field of Search 713/153; 709/229,
709/223; 707/10
(56) References Cited
U.S. PATENT DOCUMENTS
5,835,726 A * 11/1998 Shwed et al 709/229
