The basic function of the Advanced Router is to give the hosts on an internal LAN or DMZ redundant full-service connections to the internet by being connected to two or more ISP networks. In order to provide redundancy, the Advanced Router uses a combination of Network Address Translation, Static Alternative Routes, and Dead Gateway Detection. This is ideal for distributing traffic across multiple low-cost DSL lines. Downtime is reduced, even eliminated by always having a spare line or two operational.

  Physically, the Advanced Router is a commodity personal computer with off-the-shelf ethernet adapters, running Linux with a patched kernel. Configuration preferences are set using a convenient, secure, database-backed web application designed to detect new interfaces and hosts for easy maintenance. For greater redundancy, a second Advanced Router can act as a Tandem Partner, reconfigurable on the fly to take over if the first should require routine upgrades, maintenance, or replacement.

  Key features include:

• Advanced Rules and Routes
• Network Address Translation and Filtering
• Static Alternative Routes
• Dead Gateway Detection
• High Availability
• Load Balancing
• Tandem Failover
• RDF Database Schema
• Easy to use, highly secure web GUI