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公开(公告)号：AT488943T
公开(公告)日：2010-12-15
申请号：AT05821802
申请日：2005-12-09
Applicant: IBM
Inventor： SHAHEEN AMAL AHMED , MCQUIRE TOMMY
IPC: H04L29/06
Abstract: A system, method and computer program for enforcing network cluster proximity requirements using a proxy is useful in preventing unauthorized devices from receiving encrypted broadcast content intended for only authorized users within a network cluster. The current art allows users to remotely establish trust via a cryptographic handshake. This results in encrypted broadcast content being delivered to unauthorized devices. The present invention assures that encrypted broadcast content is delivered to only authorized devices, allowing authorized remote devices to receive encrypted broadcast content while preventing unauthorized remote devices from doing so. The present invention enforces network proximity requirements to authorized devices within a defined area by timing the cryptographic handshaking, and by authorizing device proxies within a geographic area for retransmitting to authorized remote devices outside said geographic area.
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公开(公告)号：PL316565A1
公开(公告)日：1997-01-20
申请号：PL31656594
申请日：1994-12-27
Applicant: IBM
Inventor： CANTRELL THOMAS GEORGE , JAJI SEBNEM , SHAHEEN AMAL AHMED , WARD RICHARD BYRON
Abstract: A cache manager efficiently supporting both connected and disconnected client operation. A single integrated cache is maintained for file system data, status and pathname information. File system requests are satisfied by the cache if possible and passed to a remote file system for servicing if necessary. The cache manager is independent of operating system file syntax and distributed file system protocol. Disconnected operation is supported through an aggressive caching policy and by logging of file system modifications. Modification logs are created when the client is disconnected by logging objects that optimize the log as it is created. Cache file system objects can have multiple parents each with different naming syntax because the object name is not cached.
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公开(公告)号：CA2142797C
公开(公告)日：2005-04-12
申请号：CA2142797
申请日：1995-02-17
Applicant: IBM
Inventor： CANTRELL THOMAS GEORGE , JAJI SEBNEM , SHAHEEN AMAL AHMED , WARD RICHARD BYRON
Abstract: A cache manager efficiently supporting both connected and disconnected client operation. A single integrated cache is maintained for file system data, status and pathname information. File system requests are satisfied by the cache if possible and passed to a remote file system for servicing if necessary. The cache manager is independent of operating system file syntax and distributed file system protocol. Disconnected operation is supported through an aggressive caching polic y and by logging of file system modifications. Modification logs are created when the client is disconnected by logging objects that optimize the log as it is created. Cache file system objects can have multiple parents each with different naming syntax because the object name is not cached.
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4.发明专利
公开(公告)号：CZ9602602A3
公开(公告)日：1997-12-17
申请号：CZ260296
申请日：1994-12-27
Applicant: IBM
Inventor： CANTRELL THOMAS GEORGE , JAJI SEBNEM , SHAHEEN AMAL AHMED , WARD RICHARD BYRON
CPC classification number: G06F17/30132
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公开(公告)号：AT177223T
公开(公告)日：1999-03-15
申请号：AT95905595
申请日：1994-12-27
Applicant: IBM
Inventor： CANTRELL THOMAS GEORGE , JAJI SEBNEM , SHAHEEN AMAL AHMED , WARD RICHARD BYRON
Abstract: A cache manager efficiently supporting both connected and disconnected client operation. A single integrated cache is maintained for file system data, status and pathname information. File system requests are satisfied by the cache if possible and passed to a remote file system for servicing if necessary. The cache manager is independent of operating system file syntax and distributed file system protocol. Disconnected operation is supported through an aggressive caching policy and by logging of file system modifications. Modification logs are created when the client is disconnected by logging objects that optimize the log as it is created. Cache file system objects can have multiple parents each with different naming syntax because the object name is not cached.
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Patent Agency Ranking
公开(公告)号：HUT75264A
公开(公告)日：1997-05-28
申请号：HU9602443
申请日：1994-12-27
Applicant: IBM
Inventor： CANTRELL THOMAS GEORGE , JAJI SEBNEM , SHAHEEN AMAL AHMED , WARD RICHARD BYRON
Abstract: A cache manager efficiently supporting both connected and disconnected client operation. A single integrated cache is maintained for file system data, status and pathname information. File system requests are satisfied by the cache if possible and passed to a remote file system for servicing if necessary. The cache manager is independent of operating system file syntax and distributed file system protocol. Disconnected operation is supported through an aggressive caching policy and by logging of file system modifications. Modification logs are created when the client is disconnected by logging objects that optimize the log as it is created. Cache file system objects can have multiple parents each with different naming syntax because the object name is not cached.
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公开(公告)号：DE602005024859D1
公开(公告)日：2010-12-30
申请号：DE602005024859
申请日：2005-12-09
Applicant: IBM
Inventor： SHAHEEN AMAL AHMED , MCQUIRE TOMMY
IPC: H04L29/06
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公开(公告)号：HU9602443D0
公开(公告)日：1996-11-28
申请号：HU9602443
申请日：1994-12-27
Applicant: IBM
Inventor： CANTRELL THOMAS GEORGE , JAJI SEBNEM , SHAHEEN AMAL AHMED , WARD RICHARD BYRON
Abstract: A cache manager efficiently supporting both connected and disconnected client operation. A single integrated cache is maintained for file system data, status and pathname information. File system requests are satisfied by the cache if possible and passed to a remote file system for servicing if necessary. The cache manager is independent of operating system file syntax and distributed file system protocol. Disconnected operation is supported through an aggressive caching policy and by logging of file system modifications. Modification logs are created when the client is disconnected by logging objects that optimize the log as it is created. Cache file system objects can have multiple parents each with different naming syntax because the object name is not cached.
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公开(公告)号：HU219996B
公开(公告)日：2001-10-28
申请号：HU9602443
申请日：1994-12-27
Applicant: IBM
Inventor： CANTRELL THOMAS GEORGE , JAJI SEBNEM , SHAHEEN AMAL AHMED , WARD RICHARD BYRON
Abstract: A cache manager efficiently supporting both connected and disconnected client operation. A single integrated cache is maintained for file system data, status and pathname information. File system requests are satisfied by the cache if possible and passed to a remote file system for servicing if necessary. The cache manager is independent of operating system file syntax and distributed file system protocol. Disconnected operation is supported through an aggressive caching policy and by logging of file system modifications. Modification logs are created when the client is disconnected by logging objects that optimize the log as it is created. Cache file system objects can have multiple parents each with different naming syntax because the object name is not cached.
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公开(公告)号：DE69521016D1
公开(公告)日：2001-06-28
申请号：DE69521016
申请日：1995-11-28
Applicant: IBM
Inventor： LOUCKS LARRY KEITH , SHAHEEN AMAL AHMED
Abstract: A system and method for controlling access to shared resources in a distributed computer system. Access to shared resources is controlled by a local authorization token manager. Only computer processes holding authorization tokens for the requested operation may perform that operation. Each requested operation checks for the proper token. If the token is not held by the process, it is requested. The local token manager resolves token conflicts before granting tokens. A token manager of a distributed file system export protocol also is able to request authorization tokens from the local token manager. The export protocol token manager controls authorization tokens for that particular distributed file system protocol. Multiple different export protocols may request tokens from the local token manager. The shared resources may therefore be shared by multiple different export protocols without conflict. Local processes and processes requesting shared resource operations through an export protocol that does not itself manage tokens are granted tokens through the operation token request mechanism. This mechanism enables local processes to use shared resources without the performance penalty of having to request through a local distributed client process.
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