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MCITP Guide to Microsoft Windows Server 2008 Server Administration (Exam #70-646)

MCITP Guide to Microsoft Windows Server 2008 Server Administration (Exam #70-646). Chapter 10 Configuring Remote Access. Learning Objectives. Understand Windows Server 2008 remote access services Implement and manage a virtual private network Configure a VPN server

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MCITP Guide to Microsoft Windows Server 2008 Server Administration (Exam #70-646)

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  1. MCITP Guide to Microsoft Windows Server 2008 Server Administration (Exam #70-646) Chapter 10 Configuring Remote Access

  2. Learning Objectives • Understand Windows Server 2008 remote access services • Implement and manage a virtual private network • Configure a VPN server • Configure a dial-up remote access server • Troubleshoot virtual private network and dial-up remote access installations MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  3. Learning Objectives (cont’d.) • Install and configure Terminal Services MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  4. Introduction to Remote Access • Routing and Remote Access Services (RRAS) • Enable routing and remote access through virtual private networking and dialup networking • Virtual private network (VPN) • Tunnel through a larger network that is restricted to designated member clients only • Dial-up networking • Using a telecommunications line and a modem to dial into a network or specific computers on a network MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  5. Introduction to Remote Access (cont’d.) • Modem • Modulator/demodulator • Converts a transmitted digital signal to an analog signal for a telephone line • Converts a received analog signal to a digital signal for use by a computer • RRAS • Turns server into a dial-up Remote Access Services (RAS) server capable of handling hundreds of simultaneous connections MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  6. Figure 10-1 A VPN network Courtesy Course Technology/Cengage Learning MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  7. Implementing a Virtual Private Network • VPN • Uses LAN and tunneling protocols • Encapsulates data as it is sent across a public network • Benefits of using a VPN • Users can connect through a local ISP to the local network • Ensures that any data sent across a public network is secure • Encrypted tunnel MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  8. Using Remote Access Protocols • Function of the remote access protocol • Encapsulate a packet • TCP/IP is the most commonly used transport protocol • Encapsulated in a remote access protocol for transport over a WAN • Other legacy transport protocols • IPX for legacy NetWare networks • NetBEUI for legacy Microsoft networks • Not supported by Windows Server 2008 MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  9. Using Remote Access Protocols (cont’d.) • Serial Line Internet Protocol (SLIP) • Originally designed for UNIX environments • Provides point-to-point communications using TCP/IP • Compressed Serial Line Internet Protocol (CSLIP) • Newer version of SLIP • Compresses header information in each packet • SLIP and CSLIP do not support • Network connection authentication MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  10. Using Remote Access Protocols (cont’d.) • SLIP and CSLIP do not support (cont’d.) • Automatic negotiation of the network connection through multiple network connection layers at the same time • Point-to-Point Protocol (PPP) • Has more capability than SLIP • Remote access protocols • Point-to-Point Tunneling Protocol • Layer Two Tunneling Protocol • Secure Socket Tunneling Protocol MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  11. Using Remote Access Protocols (cont’d.) • Point-to-Point Tunneling Protocol (PPTP) • Offers PPP-based authentication techniques • Encrypts data carried by PPTP through using Microsoft Point-to-Point Encryption • Microsoft Point-to-Point Encryption (MPPE) • Starting-to-ending-point encryption technique that uses special encryption keys varying in length from 40 to 128 bits MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  12. Using Remote Access Protocols (cont’d.) • Layer Two Tunneling Protocol (L2TP) • Works similarly to PPTP • IP Security (IPsec) • IP-based secure communications and encryption standards created through the Internet Engineering Task Force (IETF) • Secure Socket Tunneling Protocol (SSTP) • Employs PPP authentication techniques • Encapsulates data packet in the Hypertext Transfer Protocol (HTTP) MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  13. Using Remote Access Protocols (cont’d.) • Secure Sockets Layer (SSL) • Data encryption technique employed between a server and a client • PPP, PPTP, and L2TP are available in: • Windows 2000, Windows XP, Windows Vista, Windows 7 • Windows 2000 Server, Windows Server 2003, Windows Server 2008 • SSTP is available in: • Windows Server 2008, Windows Vista, Windows 7 MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  14. Using Remote Access Protocols (cont’d.) Table 10-1 Communications technologies MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  15. Configuring a VPN Server • Install Network Policy and Access Services role • Configure a Microsoft Windows Server 2008 server as a network’s VPN server • Configure protocols to provide VPN access to clients • Configure a VPN server as a DHCP Relay Agent for TCP/IP communications • Configure the VPN server properties • Configure a remote access policy for security MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  16. Configuring a VPN Server (cont’d.) • Windows Server 2008 requires at least two network interfaces in the computer: • One for the connection to the LAN • One for a connection to the physical VPN network • Activity 10-1: Installing Network Policy and Access Services • Objective: Learn how to install Routing and Remote Access Services • Activity 10-2: Setting Up a VPN Server • Objective: Set up a VPN server MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  17. Configuring a VPN Server (cont’d.) Table 10-2 Routing and remote access options MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  18. Configuring a VPN Server (cont’d.) Table 10-3 Ports to open in the Windows Firewall for a VPN MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  19. Configuring a DHCP Relay Agent • DHCP Relay Agent • Broadcasts IP configuration information • Use Routing and Remote Access tool to configure VPN server as a DHCP Relay Agent • Activity 10-3: Configuring a DHCP Relay Agent • Objective: Set up a DHCP Relay Agent • Activity 10-4: Additional DHCP Relay Agent Configuration • Objective: Configure the DHCP Relay Agent hop count MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  20. Configuring VPN Properties • Routing and Remote Access tool • Right-click the VPN server in the tree • Click Properties Figure 10-9 Configuring the interface properties Courtesy Course Technology/Cengage Learning MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  21. Configuring VPN Properties (cont’d.) Figure 10-10 VPN server properties Courtesy Course Technology/Cengage Learning MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  22. Configuring VPN Properties (cont’d.) Table 10-4 VPN server properties tabs MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  23. Configuring Multilink and Bandwidth Allocation Protocol • Multilink • Combine or aggregate two or more communications channels so they appear as one large channel • Aggregated links • Multilink must be implemented in the client as well as in the server • Older connection technology compared with DSL or wireless metropolitan area networks • Bandwidth Allocation Protocol (BAP) • Ensure that a client’s connection has enough speed or bandwidth for a particular application MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  24. Configuring Multilink and Bandwidth Allocation Protocol (cont’d.) • Windows Server 2008 version of Multilink PPP • Supports Bandwidth Allocation Control Protocol (BACP) • Selects a preferred client when two or more clients vie for the same bandwidth • Activity 10-5: Using Multilink • Objective: Configure a VPN (or RAS) server to use Multilink MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  25. Configuring VPN Security • When a user accesses a VPN server: • Access is protected by the account access security that already applies • Through a group policy or the default domain security policy • Elements of a Remote Access Policy • Access permission • Conditions • Constraints • Settings MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  26. Configuring VPN Security (cont’d.) • Establishing a Remote Access Policy • Use Routing and Remote Access tool • Accessed via Administrative Tools or as an MMC snap-in • Activity 10-6: Configuring a Remote Access Policy • Objective: Configure a remote access policy MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  27. Configuring VPN Security (cont’d.) Table 10-5 Authentication types MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  28. Figure 10-15 Encryption options Courtesy Course Technology/Cengage Learning MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  29. Configuring VPN Security (cont’d.) Table 10-6 RAS encryption options MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  30. Configuring a Dial-Up Remote Access Server • Dial-up remote access server compatible with: • Asynchronous modems • Synchronous modems • Null modem communications • Regular dial-up telephone lines • Leased telecommunication lines • ISDN lines (and digital ‘‘modems’’) • X.25 lines • DSL lines • Cable modem lines • Frame relay lines MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  31. Configuring a Dial-Up Remote Access Server (cont’d.) • Install RAS using Routing and Remote Access tool • Steps very similar to installing a VPN server MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  32. Configuring Dial-Up Security • Callback security • Server calls back the remote computer • Verify telephone number in order to discourage a hacker • Options available in Windows Server 2008: • No Callback • Set by Caller (Routing and Remote Access Service only) • Always Callback to MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  33. Configuring Dial-Up Security (cont’d.) • Control network access permission • Allow access • Deny access • Control access through NPS Network Policy • Default selection MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  34. Configuring a Dial-Up Connection for a RAS Server • Create other connections through the Network and Sharing Center • Activity 10-7: Configuring a Dial-Up Network Connection • Objective: Configure a dial-up connection for a dial-up RAS server MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  35. Configuring Clients to Connect to RAS Through Dial-Up Access • Common dial-up RAS clients • Windows 98, 2000, XP, Vista, and 7 • Access a dial-up RAS server from other operating systems • Configure a dial-up connection on those clients MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  36. Configuring Clients to Connect to RAS Through Dial-Up Access (cont’d.) Figure 10-17 Configuring a dial-up connection Courtesy Course Technology/Cengage Learning MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  37. Troubleshooting VPN and Dial-Up RAS Installations • Troubleshooting VPN or dial-up RAS server communications problem • Hardware and software troubleshooting tips MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  38. Hardware Solutions • Use Device Manager to check network adapters, WAN adapters, and modems • Make sure telephone line plugged in • For external modems: • Make sure the modem cable is properly attached, that you are using proper cable type • For internal modems or adapter cards: • Check connection inside computer MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  39. Hardware Solutions (cont’d.) • For a modem connection: • Test the telephone wall connection and cable • For an external DSL adapter or a combined DSL adapter and router: • Ensure device is properly configured and connected • Call your ISP to determine if problems are present on the ISP’s WAN MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  40. Software Solutions • Use the Computer Management tool or Server Manager to verify status of: • Routing and Remote Access • Remote Access Auto Connection Manager • Remote Access Connection Manager services • Ensure Windows Firewall is set up to allow remote access • Make sure VPN or dial-up RAS server is enabled • Check the remote access policy to be sure that access permission is granted MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  41. Software Solutions (cont’d.) • Verify VPN or dial-up RAS server is started • Check the network interface • Ensure IP parameters are correctly configured to provide an address pool for either a VPN or dial-up RAS server • If using a RADIUS server: • Ensure it is connected and working properly and that Internet Authentication Service (IAS) is installed • Ensure the remote access policy is consistent with the users’ access needs MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  42. Connecting Through Terminal Services • Terminal server • Enables clients to run services and software applications on Windows Server 2008 instead of at the client • Enables thin clients to perform most CPU-intensive operations on the server • Centralize control of how programs are used • Install different role services for specific purposes: • TS Web Access • TS Gateway MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  43. Connecting Through Terminal Services (cont’d.) Table 10-7 Terminal Services components MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  44. Connecting Through Terminal Services (cont’d.) Table 10-8 Role services available through Terminal Services MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  45. Connecting Through Terminal Services (cont’d.) • RemoteApp • New feature • Enables a client to run an application without loading a remote desktop on the client computer • TS Gateway • Provides a secure way to use Terminal Services over the Internet MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  46. Installing Terminal Services • Install TS Licensing role service • Manage terminal server user licenses obtained from Microsoft • Licenses can be purchased either per user account or by client device • Network Level Authentication (NLA) • Enables authentication to take place before the Terminal Services connection is established • Thwarts would-be attackers • Create groups of user accounts in advance • Add these groups during installation MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  47. Installing Terminal Services (cont’d.) • Activity 10-8: Installing Terminal Services • Objective: Learn how to install the Terminal Services role MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  48. Configuring Terminal Services • Activity 10-9: Configuring Terminal Services • Objective: Configure a terminal server MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  49. Configuring Terminal Services (cont’d.) Table 10-11 Terminal Services permissions MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

  50. Managing Terminal Services • Terminal Services Manager • Monitor the number of users connected to the terminal server • Add additional terminal servers to monitor • Determine if a user session is active • Determine which programs are running in a user’s session • Disconnect a user’s session or log off a user • Reset a connection that is having trouble • Send a message to a user MCITP Guide to Microsoft Windows Server 2008, Server Administration (Exam #70-646)

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