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Introduction to the Routing and Remote Access Service

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Multiprotocol routing support for the Windows NT family of operating systems began with Microsoft® Windows NT® 3.51 Service Pack 2, which included components for the Routing Information Protocol (RIP) for IP, RIP for IPX, and the Service Advertising (SAP) for IPX. Windows NT 4.0 also included these components. In June 1996, Microsoft released the Routing and Remote Access Service (RRAS) for Windows NT 4.0, a component that replaced the Windows NT 4.0 Remote Access Service, RIP for IP, RIP for IPX, and SAP for IPX services with a single integrated service providing both remote access and multiprotocol routing.

RRAS for Windows NT 4.0 added support for:

  • RIP version 2 routing protocol for IP.

  • Open Shortest Path First (OSPF) routing protocol for IP.

  • Demand-dial routing, the routing over on-demand or persistent WAN links such as analog phone, ISDN, or using the Point-to-Point Tunneling Protocol (PPTP).

  • ICMP Router Discovery.

  • Remote Authentication Dial-In User Service (RADIUS) client.

  • IP and IPX packet filtering.

  • Point-to-Point Tunneling Protocol (PPTP) support for router-to-router VPN connections.

  • A graphical user interface administrative program called Routing and RAS Admin and a command-line utility called Routemon.