About Inter-VLAN Routing

This feature is supported on XenServer and VMware hypervisors.

The major advantages are:

•The administrator can deploy a set of VLANs and allow users to deploy VMs on these VLANs. A guest VLAN is randomly alloted to an account from a pre-specified set of guest VLANs. All the VMs of a certain tier of an account reside on the guest VLAN allotted to that account.

Note

A VLAN allocated for an account cannot be shared between multiple accounts.

•The administrator can allow users create their own VPC and deploy the application. In this scenario, the VMs that belong to the account are deployed on the VLANs allotted to that account.

•Both administrators and users can create multiple VPCs. The guest network NIC is plugged to the VPC virtual router when the first VM is deployed in a tier.

•The administrator can create the following gateways to send to or receive traffic from the VMs:

•VPN Gateway: For more information, see Section 16.24.4.2, “Creating a VPN gateway for the VPC”.

•Public Gateway: The public gateway for a VPC is added to the virtual router when the virtual router is created for VPC. The public gateway is not exposed to the end users. You are not allowed to list it, nor allowed to create any static routes.

•Private Gateway: For more information, see Section 16.27.5, “Adding a Private Gateway to a VPC”.

•Both administrators and users can create various possible destinations-gateway combinations. However, only one gateway of each type can be used in a deployment.

For example:

•VLANs and Public Gateway: For example, an application is deployed in the cloud, and the Web application VMs communicate with the Internet.

•VLANs, VPN Gateway, and Public Gateway: For example, an application is deployed in the cloud; the Web application VMs communicate with the Internet; and the database VMs communicate with the on-premise devices.

•The administrator can define Access Control List (ACL) on the virtual router to filter the traffic among the VLANs or between the Internet and a VLAN. You can define ACL based on CIDR, port range, protocol, type code (if ICMP protocol is selected) and Ingress/Egress type.

The following figure shows the possible deployment scenarios of a Inter-VLAN setup:

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Citrix Systems 4.2 manual
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4.2 specifications

Citrix Systems, a leading provider of virtualization solutions and cloud computing technologies, released version 4.2 of its popular software, Citrix XenApp, which was previously known as Presentation Server. This version marked a significant evolution in providing users with remote access to applications and desktops, emphasizing simplicity, performance, and security.

One of the standout features of Citrix XenApp 4.2 is its improved application streaming capabilities. This technology allows applications to be delivered to users in real-time, reducing the need for extensive local installations and enhancing the user experience. With application streaming, administrators can efficiently manage applications on a central server while ensuring that users have immediate access to the necessary tools.

Another highlight of this version is the enhanced security measures put in place to protect sensitive data. Citrix XenApp 4.2 includes support for SSL encryption, providing a secure communication channel for data transmitted between the server and clients. This is particularly crucial for businesses that need to comply with strict data protection regulations. Additionally, the integration of endpoint security features ensures that unauthorized access to applications is minimized.

Performance enhancements are also a critical focus in this release. Citrix optimized the delivery of applications over various network conditions, ensuring that users experience minimal latency regardless of their location. This was achieved through the incorporation of SmartAccess and SmartControl technologies, which allow administrators to set policies based on user roles, device types, and network conditions. This level of granularity enables organization-wide security without compromising on usability.

The user experience was further improved with a revamped interface, making it easier for end-users to access their applications and data. Simplified menus, clear navigation paths, and the ability to customize user settings contributed to a more efficient workflow, allowing users to focus on their tasks rather than struggling with the software.

Finally, Citrix XenApp 4.2 was designed to be highly scalable. Organizations of all sizes could deploy this solution to deliver applications efficiently, adapting to their specific needs as their user base grows or changes. This flexibility is crucial for businesses looking to future-proof their IT investments while maintaining optimal performance.

In summary, Citrix XenApp 4.2 stands out with its enhanced application streaming, robust security features, improved performance under varying conditions, user-friendly interface, and scalability, making it an ideal choice for organizations seeking to leverage virtualization for remote access to applications and desktops.
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