Routing and Remote Access Service

Routing and Remote Access Service (RRAS) is a Microsoft API and server software that makes it possible to create applications to administer the routing and remote access service capabilities of the operating system, to function as a network router. Developers can also use RRAS to implement routing protocols. The RRAS server functionality follows and builds upon the Remote Access Service (RAS) in Windows NT 4.0. RRAS was introduced with Windows 2000 and offered as a download for Windows NT 4.0.The Routing and Remote Access service in Windows Server® 2008 supports remote user or site-to-site connectivity by using virtual private network (VPN) or dial-up connections. Routing and Remote Access consists of the following components:Remote Access

The remote access feature provides VPN services so that users can access corporate networks over the Internet as if they were directly connected. Remote access also enables remote or mobile workers who use dial-up communication links to access corporate networks.Routing

Routing and Remote Access is a full-featured software router and an open platform for routing and networking. It offers routing services to businesses in local area network (LAN) and wide area network (WAN) environments or over the Internet by using secure VPN connections. Routing is used for multiprotocol LAN-to-LAN, LAN-to-WAN, VPN, and network address translation (NAT) routing services.

SSTP tunneling protocol

Secure Socket Tunneling Protocol (SSTP) is a new form of virtual private networking (VPN) tunnel with features that allow traffic to pass through firewalls that block PPTP and L2TP/IPsec traffic. SSTP provides a mechanism to encapsulate PPP traffic over the SSL channel of the HTTPS protocol. The use of PPP allows support for strong authentication methods, such as EAP-TLS. The use of HTTPS means traffic will flow through TCP port 443, a port commonly used for Web access. Secure Sockets Layer (SSL) provides transport-level security with enhanced key negotiation, encryption, and integrity checking.

For information about deploying SSTP, see:

Step-by-Step Guide: Deploying SSTP Remote Access (http://go.microsoft.com/fwlink/?LinkID=104247)

Screencast: Deploying SSTP Remote Access (http://go.microsoft.com/fwlink/?LinkID=102605)

Windows Server 2012 ResourcesRemote Access is a network service in Windows Server 2012 that combines the DirectAccess feature, introduced in Windows Server 2008 R2, and the Routing and Remote Access Service (RRAS), into a new unified server role. In Windows Server 2008, Windows Server 2003, and Windows 2000 Server, RRAS provided the following services:

Dial-up remote access server Virtual private network (VPN) remote access server Internet Protocol (IP) router for connecting subnets of a private network Network address translator (NAT) for connecting a private network to the Internet Dial-up and VPN site-to-site demand-dial router

The Windows Server 2012 Remote Access server role that combines DirectAccess and RRAS allows for centralized administration, configuration, and monitoring of DirectAccess, Routing, and VPN-based remote access services.

In 2003 routing and remote access connect from

Other configurations(single NIC)

Referenceshttp://technet.microsoft.com/en-us/library/dd469714.aspxhttp://technet.microsoft.com/en-us/library/cc754634%28v=ws.10%29.aspxhttp://technet.microsoft.com/en-us/library/cc730711%28v=ws.10%29.aspxhttp://technet.microsoft.com/en-us/library/ff687667%28v=ws.10%29.aspxhttp://www.concurrency.com/blog/site-to-azure-vpn-using-windows-server-2012-rras/