Can you help us improve? Resolved my issue. Clear instructions. Easy to follow. No jargon. Pictures helped. Didn't match my screen. Incorrect instructions. The Remote Assistance Advanced button allows for the selection of additional remote management filters.
In other words, mouse and keyboard control cannot be taken or transferred. The checkbox at the bottom of the Remote Assistance Settings panel and its commensurate policy setting can limit Remote Assistance sessions to Vista and Windows 7 platforms. Group Policy or Registry settings may also be used to block Remote Assistance via settings that appear to be Remote Desktop related.
Check to assure that the following policy allows connectivity or is disabled thereby allowing the local setting. If the policy is not configured, the Registry value should not exist and is a residue or was blocked by an alternate security application.
Note that these settings need to be made well in advance of the need or offer for remote connection. This setting can be established in the local image or through Group Policy. In such cases it will be useful to have previously added a user or group account with elevated permissions, and to set UAC to prompt for permissions at the application level per launch. Standard users cannot start the services if they are not enabled.
Each can be used to start, stop, and configure remote sessions, including service starts, the opening or bypass of firewall rules, remote function management, and offering remote assistance.
Command line tools, however, are not designed to establish permanent services states for remote access tools. Screen Sharing This state occurs when the User has consented to allow the Helper to connect to his computer—either after the User has sent the Helper an invitation or the Helper has offered Remote Assistance to the User.
This warning message is customizable using Group Policy. After a Remote Assistance connection has been established and both computers have entered the Screen Sharing state, the User and Helper are able to perform the tasks listed in Table One challenge this poses is that it can be difficult to establish P2P connections if one or both of the computers involved are behind a gateway or router that uses NAT.
NAT is typically used to map a set of private IP addresses to a single public IP address or to multiple public addresses. Home networks using a wireless or wired router also use NAT technology. To overcome this difficulty, Windows 7 and Windows Vista include built-in support for Teredo, an IPv6 transition technology described in RFC that provides address assignment and automatic tunneling for unicast IPv6 connectivity across the IPv4 Internet.
For most small business and home user environments, Remote Assistance in Windows 7 and Windows Vista will seamlessly traverse a NAT-enabled router with no additional router configuration required. For information on enterprises that need to remotely support users who work from home, see the section titled "Other Possible Remote Assistance Usage Scenarios" later in this chapter.
Beginning with Windows 7, Remote Assistance can also connect across certain types of symmetric NATs, but only if the other computer is not behind a symmetric NAT as well. Remote Assistance will not work if the NAT-enabled router is configured to block the specific ports used by Remote Assistance.
See the section titled "Remote Assistance and Windows Firewall" later in this chapter for more information. To determine the type of NAT a network is using, open an elevated command prompt and type netsh interface teredo show state. For more information on IPv6 support in Windows 7, including built-in client support for Teredo and other IPv6 transition technologies, see Chapter The ports used by a Remote Assistance session depend on which version of Windows is running on the two computers involved in the session.
The Windows Firewall is configured with a group exception for Remote Assistance. This group exception has multiple properties that are grouped together as part of the Remote Assistance exception.
The Remote Assistance exception properties will change depending on the network location of the computer private, public, or domain. For example, the default Remote Assistance exception when the computer is in a public location is stricter than when the computer is in a private location. In a domain-based enterprise environment, the Remote Assistance exception is typically managed using Group Policy and is enabled by default in Windows 7; it was disabled by default in Windows Vista.
The default configuration of the Remote Assistance exception in Windows Firewall varies depending on the firewall profile. Specifically, note the following:. Private profile The Remote Assistance exception in the Windows Firewall is enabled by default when the computer location is set to Private.
It is configured for NAT traversal using Teredo by default so that users in a private networking environment for example, the home environment can solicit help from other users who may also be behind NATs. This profile also includes exceptions needed for PNRP.
Public profile The Remote Assistance exception is disabled by default and no inbound Remote Assistance traffic is permitted. Windows Firewall is configured this way by default to better protect users in a public networking environment such as a coffee shop or airport terminal. Domain profile The Remote Assistance exception when the computer is in a domain environment is geared toward the Offer RA scenario.
This exception is enabled by default in Windows 7 and is typically managed via Group Policy. Table summarizes the state of the Remote Assistance firewall inbound exception for each type of network location. The Remote Assistance exception has outbound properties as well; however, outbound exceptions are not enabled in Windows Firewall by default.
When a User consents to having a Helper share control of her computer during a Remote Assistance session, the User has the option of allowing the Helper to respond to UAC prompts Figure Typically, UAC prompts appear on the Secure Desktop which is not remoted , and consequently the Helper cannot see or respond to Secure Desktop prompts.
The User must provide consent to a UAC prompt to return to her normal desktop and continue working. This consent requires either clicking Continue if the user is a local administrator on her computer or by entering local administrative credentials if she is a standard user on her computer.
Enforcing this limitation is essential to ensure the security of Windows 7 desktops. Remote Assistance can generate a session log of Remote Assistance-associated activity. Session logging is enabled by default and consists of timestamped records that identify Remote Assistance-related activities on each computer. Session logs only contain information about activities that specifically relate to Remote Assistance functionality, such as who initiated the session, if consent was given to a request for shared control, and so on.
Session logs do not contain information on actual tasks that the User or Helper performed during a session. Session logs do include any chat activity performed during a Remote Assistance session.
The log generated during a session is also displayed within the chat window so that both the User and the Helper can see what is being logged during the session. Session logs also include any file transfer activity that occurs during the session, and they also record when the session has been paused.
Session logs for Remote Assistance are mainly intended for enterprises that are required to maintain records of system and user activity for record-keeping purposes.
A typical environment in which session logging might be required would be in a banking environment, where a financial institution is required by law to maintain records of who accessed a computer and at what time.
The logs created on each side of a Remote Assistance session are similar but not identical. Then, click OK to save the change. If you want another person to take full control of your computer, you can double-click fAllowFullControl and then select its value data to 1. No matter which method you use to enable Windows Remote Assistance, it can always work. However, if you find Remote Assistance is not working, you need to consider whether it is blocked by Windows Firewall. Reading here, you should know how to enable Remote Assistance on your Windows computer.
0コメント