The UDgateway is deployed at the WAN connection point, between the indoor wireless unit and the LAN, and provides for the organization VPN and traffic acceleration features over a public WAN link. The UDgateway appliance must be present at both ends of the communication to make use of its features. While targeted primarily to satellite and/or WiMAX-based links (or some combination of both), the vendor notes that the UDgateway itself is "agnostic to transmission system" and could potentially be used over any WAN link, including cellular.

Three versions of the UDgateway are available; each with a pair of 10/100 ports for connection to the LAN/WAN, respectively. The UDgateway-FLEX is a desktop platform typically deployed to the remote site and supporting a maximum traffic flow of 2 Mb/sec inbound and 512 Kb/sec outbound; while the UDgateway-PRO and UDgateway-PRO PLUS appliances are both 1U and both support traffic throughput at up to 10 Mb/sec (inbound and outbound). The PRO PLUS additionally features redundant power supplies.

The key feature of UDgateway is its ability to accelerate WAN traffic communications through the combination of several technologies, including ACK suppression and selective ACK; large TCP windows, support for persistent connections and Gzip level compression, HTTP pre-fetching and caching, QoS queuing and more. New to the appliance is support for the vendor's WANcompress technology, with which the product maintains synchronized data-stream-level information caches at both ends of the link (the vendor states that the retention of days or weeks worth of cached information is possible) and draws on that local cache whenever possible as opposed to re-sending the full data packets over the WAN connection. Active at the data-stream level, the vendor notes that their WANcompress technology is application agnostic, and works in tandem with the UDgateway's other acceleration and encryption features.

VPN-wise, the units support IPsec site-to-site tunnels, with AES 128 or 3DES encryption and support for split-tunneling. IP compression is supported within the tunnels.

Other features include DHCP and NAT support (with port and protocol forwarding), kernel-based firewall, Web-based management, SNMP/MIB support, NTP synchronization, and support for out-of-band modem-based access.

The UDgateway is available now. Visit the UDcast Web site for further information.

product submission by ENPlanet Staff

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