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Remote USB Access Control List
RGS supports a per-remote computer Access Control List (ACL) file that specifies which USB devices are
allowed to be remotely attached to the remote computer from a local computer, and which USB devices are
denied attachment. The ACL file, which resides on the remote computer, supports allowing/denying USB
device attachments based on the following nine USB descriptor fields:
1. Device Class
2. Device Subclass
3. Device Protocol
4. Vendor ID
5. Product ID
6. Device BCD
7. Manufacturer
8. Product Type
9. Serial Number
USB device mounting can also be allowed/denied based on the following two parameters:
1. IP address of the local computer
2. The domain group of the local user
The ACL file supports two rule types: “allow” and “deny.” The rules are evaluated by the remote computer for
each USB connection request from a local computer as follows:
●
If any rule indicates the USB connection should be denied, the connection is denied, regardless of any
other rule.
●
If any rule indicates the USB connection should be allowed, and if there are no rules that deny the
connection, the connection is allowed.
●
If no rules match at all, the connection is denied.
Therefore, a deny rule takes precedence over an allow rule. The ACL file is implemented as an Extensible
Markup Language (XML) file. The ACL schema file is located at:
C:\Program Files\Hewlett-Packard\Remote Graphics Sender\hprUsbAcl.xsd
For backwards compatibility, the following default ACL file (installed during RGS Sender installation) allows
all USB connections to be made:
C:\Program Files\Hewlett-Packard\Remote Graphics Sender
\hprDefaultUsbAcl.xml
The names for these files can be changed using the properties described in
RGS Sender properties
on page 91. The default ACL file contains the following contents, which allows all USB connections to be
made:
<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?> <hprUsbAcl>
rule type="allow"> <name>Allow all USB devices (HP default)</name> </
rule> </ruleset> </hprUsbAcl>
The following example ACL file denies all Remote USB attachment requests:
<hprUsbAcl> <ruleset> <rule type="deny"/> </ruleset> </hprUsbAcl>
58 Chapter 8 Advanced RGS features
- User Guide 1
- Acknowledgments 3
- About this guide 5
- Table of contents 7
- 1 Getting started in Windows 13
- 2RGS overview 14
- Typical RGS deployment 15
- User interface overview 16
- Remote Display Window 17
- Remote Display Window toolbar 18
- RGS features 19
- 8 Chapter 2 RGS overview 20
- RGS licensing 21
- Connection types 21
- Multi-monitor configurations 22
- RGS login methods 22
- Easy Login 23
- Single Sign-on 23
- Installing RGS on Windows 24
- Command Description 27
- /wanimprovement 27
- Installs HP Velocity 27
- Installing RGS on Linux 30
- 4 Pre-connection checklist 35
- Using RGS through a firewall 38
- 5 Using the RGS Receiver 40
- Creating an RGS connection 41
- Table 5-2 RGS touch gestures 42
- Connection settings 45
- Performance settings 46
- Audio settings 47
- Network settings 48
- Hotkey settings 48
- Logging settings 49
- Statistics 50
- 7 Using the RGS Sender 51
- RGS Sender GUI (Windows only) 53
- 8 Advanced RGS features 55
- Collaboration 56
- Optimizing RGS performance 57
- Configuring the X server 61
- Remote Audio 63
- Remote Audio on Linux 64
- Configuring audio on Linux 65
- Remote Clipboard 66
- Remote USB 66
- Local/Remote USB overview 67
- Auto-remoting 67
- Supported USB devices 68
- Remoting USB microphones 68
- Unique smart card handling 69
- Verifying the USB data 72
- Directory file format 73
- Auto-launching connections 76
- HPRemote log format 77
- Agent design issues 81
- Administrator alerts 82
- Sample agent 83
- Connection 88
- RGS security features 88
- Full-screen crosshair cursors 90
- 9 RGS properties 92
- Property syntax 93
- RGS Receiver properties 94
- RGS Receiver properties 83 95
- Experience properties 96
- Browser properties 97
- Audio properties 97
- Microphone properties 97
- USB properties 98
- Network properties 98
- Hotkey properties 99
- Clipboard properties 100
- Logging properties 100
- Registration properties 101
- Proxy server properties 101
- 90 Chapter 9 RGS properties 102
- RGS Sender properties 103
- 92 Chapter 9 RGS properties 104
- RGS Sender properties 93 105
- 94 Chapter 9 RGS properties 106
- RGS support matrix 107
- Keyboard locale support 109
- Application support 110
- B Troubleshooting 111
- RGS Sender network timeout 112
- Network timeout issues 113
- Troubleshooting Remote Audio 114
- Troubleshooting Remote USB 116
- RGS error messages 117
- RGS error messages 107 119
- CHP support 120
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