Apparatus, method, and program for validating user
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United States of America Patent
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Jan 1, 2013
Grant Date -
Feb 5, 2009
app pub date -
Mar 29, 2006
filing date -
Mar 29, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Accuracy of user validation is improved without reducing user's convenience. When a authentication request packet is received from a terminal, when the authentication is successful based on a user ID and a password (affirmative in 34), an HTTP header and user-agent (UA) information are extracted from the packet and an access source IP address is also extracted (36), and user authentication is performed by verifying the access source IP address and the UA information against usage history information (38, 44, and 46) where at most two sets of the IP address and the UA information extracted from the authentication request packet which is received from the same user previously are registered. When the set of the IP address and the UA information corresponding to the new extracted IP address and the new extracted UA information is registered in the usage history information, it is determined that the authentication is successful, and the usage history information is overwritten with the new IP address and the new UA information (52, 54, 60, and 62).
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