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'''Routing and Remote Access Service''' ('''RRAS''') is a Microsoft [[API]] and [[Server (computing)|server]] software that makes it possible to create applications to administer the [[Router (computing)|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]].<ref name="RRAS MSDN Library">[http://msdn.microsoft.com/en-us/library/Aa446768 RRAS MSDN Library]</ref> RRAS was introduced with Windows 2000 and offered as a download for Windows NT 4.0.
#* Multiprotocol [[Router (computing)|router]] - The computer running RRAS can route [[Internet Protocol|IP]], [[IPX]], and [[AppleTalk]] simultaneously. All routable protocols are configured from the same administrative utility. RRAS included two [[unicast]] routing protocols, [[Routing Information Protocol]] (RIP) and [[Open Shortest Path First]] (OSPF) as well as [[Internet Group Management Protocol|IGMP]] routing and forwarding features for [[IP multicast]]ing.
#* [[Dial-on-demand routing|Demand-dial router]] - IP and IPX can be routed over on-demand or persistent [[Wide area network|WAN]] links such as analog phone lines or [[ISDN]], or over [[VPN]] connections.
#* [[Remote Access Server|Remote access server]] - provides remote access connectivity to dial-up or VPN remote access clients that use IP, IPX, AppleTalk, or [[NetBEUI]].
Routing services and remote access services used to work separately. [[Point-to-Point Protocol]] (PPP), the protocol suite commonly used to negotiate point-to-point connections, has allowed them to be combined.
==Features introduced in Windows Server 2008==
#*Server Manager - Application used to assist system administrators with installation, configuration, and management of other RRAS features.
#*[[Secure Socket Tunneling Protocol]]
#*VPN enforcement for [[Network Access Protection]] - Limits VPN connections to defined network services.
#*[[IPv6]] support - added [[Point-to-Point Protocol|PPPv6]], [[L2TP]], [[DHCPv6]], and [[RADIUS]] technologies allowing them to work over IPv6.
#*New [[cryptographic]] support - Strengthenedstrengthened [[encryption]] algorithms to comply with U.S. government security requirements, in addition to removing algorithms which could not be strengthened.<ref name="Whats New">[http://technet.microsoft.com/en-us/library/cc730711(WS.10).aspx#BKMK_3 What's New in Routing and Remote Access in Windows Server 2008]</ref>
==Removed technologies==
#*[[Bandwidth Allocation Protocol]] (BAP). Removedwas removed from [[Windows Vista.]], Disabledand disabled in [[Windows Server 2008]].
#*[[X.25]].
#*[[Serial Line Internet Protocol]] (SLIP). SLIP-based connections will automatically be updated to PPP-based connections.
#*[[Asynchronous Transfer Mode]] (ATM).
#*[[Internet Protocol|IP]] over [[IEEE 1394]].
#*[[NWLink]] [[IPX/SPX]]/[[NetBIOS]] Compatible Transport Protocol.
#*Services for Macintosh.
#*[[Open Shortest Path First]] (OSPF) routing protocol component in Routing and Remote Access.
#*Basic Firewall in RRAS (replaced with [[Windows Firewall]]).
#*Static IP filter APIs for RRAS (replaced with [[Windows Filtering Platform]] APIs).
#*The [[Password authentication protocol|SPAP]], [[Extensible Authentication Protocol|EAP-MD5-CHAP]], and [[MS-CHAP]] authentication protocols for PPP-based connections.<ref name="Whats New" />
==See also==
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