Method and apparatus for assigning access control levels in providing access to networked content files

• US 7,865,603 B2
• Filed: 10/01/2004
• Issued: 01/04/2011
• Est. Priority Date: 09/30/2004
• Status: Active Grant

• Current Assignee: Citrix Systems, Inc. (Cloud Software Group)
• Original Assignee: Citrix Systems, Inc. (Cloud Software Group)
• Inventors: Cockerill, Aaron David, Simmons, Timothy Ernest, Braddy, Ricky Gene
• Primary Examiner(s): Winder; Patrice L
• Application Number:
  US10/956,832
• Publication Number:
  US 20060069668A1
• Time in Patent Office: 2,286 Days
• Field of Search: None
• US Class Current: 709/229
• CPC Class Codes: G06F 16/88 Mark-up to mark-up conversion conversion for visualization in web browsing G06F16/9577
• CPC Class Codes: G06F 16/9535 Search customisation based on user profiles and personalisation
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06F 21/6218 to a system of files or objects, e.g. local or distributed file system or database
• CPC Class Codes: G06Q 30/0601 Electronic shopping [e-shopping]
• CPC Class Codes: H04L 63/0823 using certificates cryptographic mechanisms or cryptographic arrangements for entity authentication involving certificates H04L9/3263
• CPC Class Codes: H04L 63/083 using passwords cryptographic mechanisms or cryptographic arrangements for entity authentication using a predetermined code H04L9/3226
• CPC Class Codes: H04L 63/0861 using biometrical features, e.g. fingerprint, retina-scan cryptographic mechanisms or cryptographic arrangements for entity authentication using biological data H04L9/3231
• CPC Class Codes: H04L 63/105 Multiple levels of security
• CPC Class Codes: H04L 63/20 for managing network security; network security policies in general filtering policies H04L63/0227
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals

Abstract

A method and apparatus for assigning access control levels when providing access to networked content files includes a client node, a collection agent, and a policy engine. The client node requests access to a resource. The collection agent gathers information about the client node. The policy engine receives the gathered information and assigns one of a plurality of levels of access responsive to application of a policy to the received information.

Claims

1. A system of granting access to resources comprising:

a first client node, operated by a user, requesting access to a resource;

a first collection agent gathering information about the first client node in response to the request to access the resource using the first client node;

a second client node, operated by the user, requesting access to the resource;

a second collection agent gathering information about the second client node in response to the request to access the resource using the second client node;

a policy engine in communication with the first collection agent and the second collection agent, granting to the user a first level of access to the resource responsive to application of a policy to the information gathered about the first client node when used by the user, and granting to the user a second level of access to the resource responsive to application of a policy to the information gathered about the second client node when used by the user,

wherein the first level of access is selected from a plurality of levels of access, and wherein the second level of access is selected from the plurality of levels of access and allows access to the resource by requiring the use of an application hosted by a remote server to perform operations on the resource instead of an application hosted by the second client node.

2. The system of claim 1 wherein the policy engine further comprises a database storing configurable policies.

3. The system of claim 1 wherein a system administrator configures policies in the policy engine to provide a level of access control rights to each client node.

4. The system of claim 1 wherein the policy engine transmits instructions to each collection agent determining the type of information each collection agent gathers.

5. The system of claim 1 wherein the policy engine further comprises a logon agent.

6. The system of claim 5 wherein the logon agent receives the gathered information about each client node from the corresponding collection agent.

7. The system of claim 5 wherein the logon agent identifies for the policy engine authentication information received from each collection agent.

8. The system of claim 1 wherein the policy engine further comprises a plurality of logon agents.

9. The system of claim 8 wherein at least one of the plurality of logon agents resides on each network domain from which a client node may transmit a resource request.

10. The system of claim 9 wherein each client node transmits its resource request to a particular logon agent.

11. The system of claim 10 where the logon agent identifies for the policy engine the network domain from which each client node transmits its resource request.

12. The system of claim 1 wherein each collection agent executes on the corresponding client node.

13. The system of claim 1 wherein the policy engine transmits each collection agent to the corresponding client node.

14. The system of claim 1 wherein each collection agent comprises at least one script.

15. The system of claim 1 wherein each collection agent comprises bytecode.

16. The system of claim 1 wherein each collection agent gathers the information about the corresponding client node by running at least one script on the corresponding client node.

17. The system of claim 1 wherein each collection agent gathers information about the corresponding client node, said information residing on a server.

18. The system of claim 17 wherein each collection agent gathers information comprising HTTP headers.

19. The system of claim 17 wherein each collection agent gathers information comprising the network zone of the corresponding client node.

20. The system of claim 17 wherein each collection agent gathers information comprising the method of authentication used by the corresponding client node.

21. The system of claim 1 wherein each collection agent gathers a machine ID of the corresponding client node.

22. The system of claim 1 wherein each collection agent gathers information comprising operating system type.

23. The system of claim 1 wherein each collection agent gathers information comprising existence of a patch to an operating system.

24. The system of claim 1 wherein each collection agent gathers information comprising MAC addresses of installed network cards.

25. The system of claim 1 wherein each collection agent gathers information comprising a watermark on the corresponding client device.

26. The system of claim 1 wherein each collection agent gathers information comprising membership in an Active Directory.

27. The system of claim 1 wherein each collection agent gathers information comprising existence of a virus scanner.

28. The system of claim 1 wherein each collection agent gathers information comprising existence of a firewall.

29. The system of claim 1 wherein each collection agent gathers information comprising an HTTP header.

30. A method of granting access to resources, the method comprising:

(a) requesting, by a user, access to a resource using a first client node;

(b) gathering, by a collection agent, information about the first client node in response to the request to access the resource using the first client node;

(c) granting, by a policy engine in communication with the collection agent, to the user a first level of access to the resource responsive to application of a policy to the information gathered about the first client node when used by the user, the first level of access selected from a plurality of levels of access;

(d) requesting, by the user, access to the resource using a second client node;

(e) gathering, by a second collection agent, information about the second client node in response to the request to access the resource using the second client node; and

(f) granting, by a policy engine in communication with the second collection agent, to the user a second level of access to the resource responsive to application of a policy to the information gathered about the second client node when used by the user, the second level of access selected from the plurality of levels of access and allowing access to the resource by requiring the use of an application hosted by a remote server to perform operations on the resource instead of an application hosted by the second client node.

31. The method of claim 30 wherein step (a) further comprises requesting the resource over a network connection.

32. The method of claim 30 wherein step (b) further comprises gathering the information over a network connection.

33. The method of claim 30 wherein step (b) further comprises gathering information about each client node by executing at least one script on the corresponding client node.

34. The method of claim 30 wherein step (c) further comprises determining if the received information about each client node satisfies a condition.

35. The method of claim 34 further comprising determining if the received information about each client node satisfies a condition by comparing the received information to at least one condition.

36. The method of claim 35 wherein step (d) further comprises making an access control decision by applying a policy to the condition.

37. A policy engine comprising:

a first component receiving information about a first client node from which a user requests access to a resource, generating a first data set from the information, receiving information about a second client node from which the user requests access to the resource, and generating a second data set from the information about the second client node; and

a second component receiving the first data set, granting a first level of access to the user based on the first data set received when the first client node is used by the user, receiving the second data set, and granting a second level of access to the user based on the second data set received when the second client node is used by the user, the second level of access requiring the use of an application hosted by a remote server to perform operations on the resource instead of an application hosted by the second client node, wherein the first level of access and the second level of access are selected from a plurality of levels of access.

38. The policy engine of claim 37 wherein the first component receives the information about each client node from a collection agent.

39. The policy engine of claim 37 wherein the first component includes at least one condition to which received information about each client node is compared.

40. The policy engine of claim 37 wherein the second component further comprises a database.

41. The policy engine of claim 40 wherein the database stores at least one policy.

42. The policy engine of claim 41 wherein the second component further comprises identifying available resources by applying the at least one policy to each data set.

43. The policy engine of claim 37 wherein the policy engine further comprises a logon agent.

44. The policy engine of claim 43 wherein the logon agent receives the gathered information about each client node from a collection agent.

45. The policy engine of claim 44 wherein the logon agent identifies for the policy engine the authentication information received from the collection agent.

46. The policy engine of claim 43 wherein the policy engine further comprises a plurality of logon agents.

47. The policy engine of claim 46 wherein at least one of the plurality of logon agents resides on each network domain from which each client node may transmit the corresponding resource request.

48. The policy engine of claim 47 where each client node transmits the corresponding resource request to a particular logon agent.

49. A method of granting access with a policy engine, the method comprising:

(a) receiving, by a first component of a policy engine, information about a first client node from which a user requests access to a resource;

(b) generating, by the first component, a first data set from the information;

(c) granting, by a second component of the policy engine, a first level of access to the user based on the first data set received from the first component when the first client node is used by the user, the first level of access selected from a plurality of levels of access;

(d) allowing, by the second component, the user access to the resource according to the first level of access granted to the user when the first client node is used by the user;

(a) receiving, by the first component, information about a second client node from which the user requests access to the resource;

(b) generating, by the first component, a second data set from the information;

(c) granting, by the second component, a second level of access to the user based on the second data set received from the first component when the second client node is used by the user, the second level of access selected from the plurality of levels of access;

(d) allowing, by the second component, the user access to the resource according to the second level of access granted to the user when the second client node is used by the user, the second level of access requiring the use of an application hosted by a remote server to perform operations on the resource instead of an application hosted by the second client node.

50. The method of claim 49 further comprising the step of identifying, by a second component, resources available to each client node according to the corresponding level of access granted.

51. The method of claim 50 further comprising identifying available resources by applying a policy to each received data set.

52. The method of claim 49 further comprising the step of requesting further information about each client node.

53. The method of claim 49 further comprising the step of receiving further information about each client node.

54. The method of claim 49 wherein step (c) further comprises applying, by the second component, a policy to each received data set to determine access methods available to the corresponding client node.

55. The method of claim 49 wherein step (c) further comprises receiving, by the first component, an enumeration of available resources based on each level of access granted.

56. The method of claim 55 wherein step (c) further comprises receiving, by the first component, an enumeration of a subset of available resources.

57. The method of claim 55 wherein step (c) further comprises providing, by the first component, the enumeration to the corresponding client node.

58. The method of claim 55 wherein step (c) further comprises providing, by the first component, the enumeration to the corresponding client node on an HTML page.