Allot NetEnforcer Datasheet
The NetEnforcer® AC-1000 series of carrier class traffic management devices is especially suitable for medium and large broadband service provider networks. Using deep packet inspection (DPI) technology with QoS enforcement capabilities, they monitor and control network traffic and subscriber behavior, and provide an unsurpassed level of visibility.

  LS HTTP-Prefetch Product Note
ViaSat’s Web Accelerator Gateway is a high performance standalone software/hardware product used to accelerate web access over satellite. This gateway installs in any satellite network as a Hub-side component. It houses an application layer pre-fetch and pre-push Web acceleration mechanism (patent-pending) based on a variation of a current market-proven version. Its unique technology directly interacts with the client-side browsers without the need for client-side software or hardware.

Microsoft’s ISA Server software works as the web proxy, providing an application layer firewall solution, web caching, and VPN mechanisms, in addition to web acceleration, in an all-inone integrated platform. The web acceleration feature also supports GZIP compression to further improve web access over satellite.

 IP Quality of Service (QoS) on LinkStar’s Inbound Channel
Internet Protocol (IP) performance for the end user has long encountered degradation and congestion when attempting to share bandwidth across networks with multiple applications and services. To alleviate this problem, the standards body and the network development community implemented IP Quality of Service (QoS) to classify IP traffic and guarantee performance in advance. IP QoS is implemented in the LinkStar product line using the Differentiated Services (DiffServ) implementation based on RFCs 2474, 2597, and 2598.

This feature employs the same QoS implementation used in the LINKWAY products, which has been successfully deployed and applied on live customer networks. QoS is applied on the LinkStar terminals to the inbound channel and a similar implementation is applied on the outbound channel using an external QoS device. This application note describes the implementation of IP QoS on the inbound channel in LinkStar and presents an example of its application.

 LinkStarTM SNMP Operations
SNMP (Simple Network Management Protocol) operations in LinkStar allow management software running on PCs and workstations to monitor and control the LinkStar NCC and RNCC. Through SNMP subagents and proxy processes, standards- based access is provided to any SNMP Manager. This capability permits equipment configuration and status monitoring. The agents support the LinkStar-specific private MIBs (Management Information Base).

 Juniper Networks Secure Access 4000
The Juniper Networks Secure Access 4000 (SA 4000) SSL VPNs enable mid-to-large-sized organizations to provide cost effective remote and partner extranet access from any standard Web browser. Based on the award-winning Instant Virtual Extranet (IVE) platform, the SA 4000 appliances feature rich access privilege management functionality that can be used to create secure customer/partner extranets with no infrastructure changes, no DMZ deployments, and no software agents.

 Voice over IP Applications in the LinkStar VSAT System
The rise of the Internet and IP as a standard, common form of communication has made IP the protocol of choice for various applications over both wireline and wireless communications media. One of those applications that has grown in popularity over recent years is Voice over IP (VoIP). In response to the quickly evolving trend towards VoIP, ViaSat has enhanced the LinkStar product to address and overcome the specific VoIP challenges unique to satellite. This effort has resulted in a highly competitive LinkStar Voice over IP application, particularly when incorporated with ViaSat’s recommended voice appliances.

This paper discusses VoIP considerations in the LinkStar system and illustrates how LinkStar provides high quality, cost-effective Voice over IP, thus minimizing total cost of ownership (both equipment and bandwidth costs). Application examples are provided at the end of the document, in conjunction with helpful tips and information.

 Accelerated VPN Solutions via the LinkStar VSAT System
Increasingly, enterprise and corporate customers choose Virtual Private Networks (VPNs) to securely connect remote locations through cost-effective Internet access instead of using expensive dedicated WAN links. These VPN solutions are commonly deployed across various transmission mediums, such as terrestrial, wireless, and satellite links. As a leading satellite broadband network solution, the LinkStar platform extends access from the Internet Backbone and VPNs to remote locations via satellite using the standard Internet Protocol (IP).

This document presents encrypted VPN solutions using the LinkStar platform and addresses compatibility issues encountered using VPN solutions with the ViaSat TCP Performance Enhancing Proxy (TCP-PEP). This document provides the following VPN example solutions:

1. External TCP-PEP VPN
2. Site-to-site accelerated VPN
3. Remote Access accelerated VPN

 ViaSat IPEP Description and Comparisons
IPEP, the Comsat Labs/ViaSat TCP Performance Proxy, is a hardware/software product, which accelerates TCP traffic over satellite links. Due to the high propagation delay of geo-synchronous satellites, most applications that use the standard TCP protocol for reliable end-to-end communications (such as file transfer, e-mail and web access) are limited to a maximum throughput of 64 kbps to 384 kbps, even when the satellite link rate is much higher. The IPEP technology, when used across a satellite network, removes this limitation without requiring any changes to end user equipment or software. Individual application throughput can be as high as the satellite link rate – up to 100 Mbps.

 ViaSat LINKSTAR DHCP RELAY IMPLEMENTATION vs Local DHCP Server
Mobile Universe, ViaSat’s LinkStar integrates support for DHCP Relay to support dynamic and automatic IP address assignment at the RCST without the need for additional Customer Premise Equipment (CPE). This implementation can be used independently or integrated with additional features of LinkStar such as VLANtagging.