Chapter 12: Remote Access and Virtual Private NetworksLearning ObjectivesEarly Remote Access MethodsAccessing a Workstation RemotelyMicrosoft Remote AccessUsing RASVirtual Private NetworkPlanning TipVPN ArchitectureOperating Systems Than Can Connect to RASConnection Types Supported by RASConnection Types Supported by RAS (continued)T-CarrierFrame RelayISDNX.25DSLTransport and Remote Communication ProtocolsUsing ModemsISDN ConnectivityAccess ServerAccess Server ArchitectureRemote Access ProtocolsSLIP and PPP ComparedRemote Access Protocols (continued)Configuring RASInstalling RASInstalling RAS (continued)Routing and Remote Access OptionsSlide 30Viewing a RAS Server’s PropertiesDHCP Relay AgentSecurity Set at the ClientCallback OptionsConfiguring Dial-in SecurityRemote Access PoliciesConfiguring Remote Access PoliciesAuthentication OptionsAuthentication Options (continued)Slide 40Slide 41Configuring AuthenticationChapter SummarySlide 44Chapter 12Chapter 12:Chapter 12:Remote Access and Virtual Remote Access and Virtual Private NetworksPrivate NetworksChapter 12:Chapter 12:Remote Access and Virtual Remote Access and Virtual Private NetworksPrivate NetworksChapter 12Learning ObjectivesLearning ObjectivesLearning ObjectivesLearning ObjectivesExplain how remote access and virtual Explain how remote access and virtual private network (VPN) services workprivate network (VPN) services workExplain how to implement remote access Explain how to implement remote access communications devices and protocolscommunications devices and protocolsConfigure remote access services, Configure remote access services, security, dial-up connectivity, and client security, dial-up connectivity, and client accessaccessChapter 12Early Remote Access MethodsEarly Remote Access MethodsEarly Remote Access MethodsEarly Remote Access MethodsAn early method for accessing a An early method for accessing a network, which is still used, is to network, which is still used, is to connect to a workstation through connect to a workstation through remote access software such as remote access software such as Carbon CopyCarbon CopyChapter 12Accessing a Workstation Accessing a Workstation Remotely Remotely Accessing a Workstation Accessing a Workstation Remotely Remotely Figure 12-1 Remotely accessing a workstations on a networkFigure 12-1 Remotely accessing a workstations on a networkM o d e mE t h e r n e tW o r k s t a t i o n W o r k s t a t i o nS e r v e rM o d e mW o r k s t a t i o nT e l e p h o n e l i n eChapter 12Microsoft Remote Access Microsoft Remote Access Microsoft Remote Access Microsoft Remote Access A modern way to access a network A modern way to access a network remotely is by using Microsoft Remote remotely is by using Microsoft Remote Access Services (RAS) in Windows Access Services (RAS) in Windows 2000 Server2000 ServerChapter 12Using RASUsing RASUsing RASUsing RASFigure 12-2 Figure 12-2 Remotely accessing a Remotely accessing a network through network through Microsoft RASMicrosoft RASM o d e mT e l e p h o n e l i n eE t h e r n e tC l i e n tw o r k s t a t i o nC l i e n tw o r k s t a t i o nM o d e mM o d e mM o d e mT e l e p h o n e l i n eW i n d o w s 2 0 0 0 s e r v e rw i t h R A SN e t W a r e s e r v e rChapter 12Virtual Private NetworkVirtual Private NetworkVirtual Private NetworkVirtual Private NetworkVirtual private network: A private Virtual private network: A private network that is like a tunnel through a network that is like a tunnel through a larger network – such as the Internet, larger network – such as the Internet, an enterprise network, or both – that is an enterprise network, or both – that is restricted only to designated member restricted only to designated member clientsclientsChapter 12Planning TipPlanning TipPlanning TipPlanning TipUse a VPN to save money on modems Use a VPN to save money on modems and telephone lines for remote access to and telephone lines for remote access to a networka networkChapter 12VPN ArchitectureVPN ArchitectureVPN ArchitectureVPN ArchitectureFigure 12-3 Figure 12-3 VPN network VPN network architecturearchitectureS u b n e t 1 7 7 . 2 8 . 4 4S u b n e t 1 7 7 . 2 8 . 2 3S u b n e t 1 7 7 . 2 8 . 7S u b n e t 1 7 7 . 2 8 . 1 9M o d e mW i n d o w s 2 0 0 0 S e r v e rw i t h V P N / I I SM o d e mT-3 lineFrame relay lineI n t e r n e tI n t e r n e tW i n d o w s 2 0 0 0s e r v e r sW e b s e r v e rT e l e p h o n e l i n eT e l e p h o n e l i n eR o u t e rR o u t e r R o u t e rV P N t u n n e l sV P N t u n n e l1 7 7 . 2 8 . 4 4 . 1 2 91 7 7 . 2 8 . 2 3 . 1 0V P N T u n n e l sChapter 12Operating Systems Than Can Operating Systems Than Can Connect to RAS Connect to RAS Operating Systems Than Can Operating Systems Than Can Connect to RAS Connect to RAS MS-DOSMS-DOSWindows 3.1 and 3.11Windows 3.1 and 3.11Windows NT (all versions)Windows NT (all versions)Windows 95Windows 95Windows 98Windows 98Windows 2000 Server and ProfessionalWindows 2000 Server and ProfessionalChapter 12Connection Types Connection Types Supported by RASSupported by RAS Connection Types Connection Types Supported by RASSupported by RAS Asynchronous modemsAsynchronous modemsSynchronous modems through an Synchronous modems through an access serveraccess serverNull modem connectionsNull modem connectionsRegular dial-up telephone linesRegular dial-up telephone linesLeased telecommunications lines, such Leased telecommunications lines, such as T-carrieras T-carrierChapter 12Connection Types Connection Types Supported by RAS (continued)Supported by RAS (continued) Connection Types Connection Types Supported by RAS (continued)Supported by RAS (continued) ISDN lines (and digital modems)ISDN lines (and digital modems)X.25 linesX.25 linesDSL linesDSL linesFrame relay linesFrame relay linesChapter 12T-CarrierT-CarrierT-CarrierT-CarrierT-carrier: A dedicated leased telephone T-carrier: A dedicated leased telephone line that can be used for data line that can be used for data communications over multiple channels communications over multiple channels for speeds of up to 44.736 Mbps and for speeds of up to 44.736 Mbps and beyondbeyondTwo common varieties of T-carrier are:Two common varieties of T-carrier are:T-1 at 1.544 MbpsT-1 at 1.544 MbpsT-3 at 44.736 MbpsT-3 at 44.736 MbpsChapter 12Frame Relay Frame Relay Frame Relay Frame Relay Frame relay: