This document describes:
Your organization may need to meet specific security standards to satisfy regulatory requirements. This document does not cover this subject, because such security standards change over time. For up-to-date information on security standards and Citrix products, consult http://www.citrix.com/security/.
Keep all machines in your environment up to date with security patches. One advantage is that you can use thin clients as terminals, which simplifies this task.
Protect all machines in your environment with antivirus software.
Protect all machines in your environment with perimeter firewalls, including at enclave boundaries as appropriate.
If you are migrating a conventional environment to this release, you may need to reposition an existing perimeter firewall or add new perimeter firewalls. For example, suppose there is a perimeter firewall between a conventional client and database server in the data center. When this release is used, that perimeter firewall must instead be placed so that the virtual desktop and user device are on one side of it, and the database servers and Delivery Controllers in the data center are on the other side. You should, therefore, consider creating an enclave within your data center to contain the servers and controllers used by this release. You should also consider having protection between the user device and the virtual desktop.
All machines in your environment should be protected by a personal firewall. When you install a Virtual Delivery Agent (VDA), you can choose to have the ports required for component and feature communication opened automatically if the Windows Firewall Service is detected (even if the firewall is not enabled). You can also choose to configure those firewall ports manually. If you use a different firewall, you must configure the firewall manually.
All network communications should be appropriately secured and encrypted as appropriate to match your security policy. You can secure all communication between Microsoft Windows computers using IPSec; refer to your operating system documentation for details about how to do this. In addition, communication between user devices and desktops is secured through Citrix SecureICA, which is configured by default to 128-bit encryption. You can configure SecureICA when you are creating or updating an assignment; see Secure Delivery Groups.
You should grant users only the capabilities they require. Microsoft Windows privileges continue to be applied to desktops in the usual way: configure privileges through User Rights Assignment and group memberships through Group Policy. One advantage of this release is that it is possible to grant a user administrative rights to a desktop without also granting physical control over the computer on which the desktop is stored.
When planning for desktop privileges, note:
Your user environment can consist either of user devices that are unmanaged by your organization and completely under the control of the user, or of user devices that are managed and administered by your organization. The security considerations for these two environments are generally different.
Managed user devices
Managed user devices are under administrative control; they are either under your own control, or the control of another organization that you trust. You may configure and supply user devices directly to users; alternatively, you may provide terminals on which a single desktop runs in full-screen-only mode. You should follow the general security best practices described above for all managed user devices. This release has the advantage that minimal software is required on a user device.
A managed user device can be set up to be used in full-screen-only mode or in window mode:
Unmanaged user devices
User devices that are not managed and administered by a trusted organization cannot be assumed to be under administrative control. For example, you might permit users to obtain and configure their own devices, but users might not follow the general security best practices described above. This release has the advantage that it is possible to deliver desktops securely to unmanaged user devices. These devices should still have basic antivirus protection that will defeat keylogger and similar input attacks.
Data storage considerations
When using this release, you can prevent users from storing data on user devices that are under their physical control. However, you must still consider the implications of users storing data on desktops. It is not good practice for users to store data on desktops; data should be held on file servers, database servers, or other repositories where it can be appropriately protected.
Your desktop environment may consist of various types of desktops, such as pooled and dedicated desktops:
Remote PC Access implements the following security features:
Data: See chart
|0||Disable multiple user assignment.|
|1||Enable multiple user assignment. This is the default value.|