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Lesson Summary
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When you configure a site-to-site VPN, you must configure all the remote-site network properties and configure access rules for traffic flow between the networks. In addition, you must configure both sides of a site-to-site VPN connection.
Making Bar Code In C#
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Barcode Decoder In Visual C#.NET
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Lesson 3
Print QR Code In VS .NET
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Quick Response Code Generation In .NET Framework
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Configuring Virtual Private Networking for Remote Sites
Generating QR Code In Visual Basic .NET
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Draw PDF 417 In C#
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10-49
Generating Barcode In Visual C#
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A site-to-site VPN is a point-to-point secure tunnel created through the Internet between a VPN gateway server in one location and a VPN gateway server in another location. A tunneling protocol is a protocol that encapsulates a network packet inside a new packet. ISA Server supports the following three protocols for site-to-site VPN connections: Point-to-Point Tunneling Protocol (PPTP), Layer Two Tunneling Protocol (L2TP), and Internet Protocol security (IPSec) tunnel mode. A remote-site network will contain the IP addresses for all computers connecting from the remote office. To configure ISA Server to support site-to-site VPNs, you must configure one or more remote-site networks. There are only two differences between configuring a site-to-site VPN using IPSec tunnel mode and configuring a PPTP or L2TP/IPSec based VPN. When you configure the remote VPN gateway IP address, you must also configure a local VPN gateway IP address used by ISA Server computer to listen for VPN connections and you can configure the VPN gateways to use a certificate or pre-shared key for authentication or a pre-shared key for authentication. When you configure a site-to-site VPN in ISA Server, a new network is established. You can configure network rules and access rules to limit the flow of network traffic from the remote site to any other network. After configuring one of the VPN gateways in a site-to-site VPN, you also need to configure the other VPN gateway. The specific steps in configuring the VPN gateway for the remote site will depend on the type of VPN gateway used in the remote office but most of the steps are similar for both VPN gateways. Troubleshooting site-to-site VPN connections is similar to troubleshooting remoteaccess VPN connections. In addition, you must ensure that the user name and network names are identical, and you can use RRAS to troubleshoot some connectivity issues.
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10-50
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Read PDF 417 In Java
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10
Scanning Data Matrix 2d Barcode In Visual C#.NET
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Painting UPC - 13 In Java
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Configuring Virtual Private Networks for Remote Clients and Networks
Code-39 Decoder In .NET
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Lesson 4: Configuring VPN Quarantine Control
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Windows Server 2003 provides a quarantine service that is used to confirm the security configuration of a remote client before granting the client full access to the internal network. This functionality has been extended by ISA Server 2004, which integrates the VPN quarantine control feature with the firewall. This lesson describes what the quarantine service is, how it works, and how to implement VPN quarantine control using ISA Server 2004.
After this lesson, you will be able to
Describe a network quarantine List the components required for network quarantine using ISA Server Configure the client-side script Configure VPN clients using Connection Manager Configure the listener component on ISA Server Enable quarantine control on ISA Server Configure Internet authentication server for network quarantine Configure quarantined VPN client-access rules
Estimated lesson time: 60 minutes
What Is Network Quarantine Control
The VPN network quarantine control feature allows you to screen VPN client machines before allowing them access to the organization s network. VPN quarantine control can delay normal remote access to a private network until the remote-access client configuration has been validated by a client-side script. Figure 10-13 illustrates and the following steps describe how ISA Server quarantine control works when the remote listener and remote-client component provided with Windows Server 2003 Resource Kit and ISA Server policies are used to implement quarantine control: 1. The user on the quarantine-compatible remote-access client uses the installed quarantine Connection Manager (CM) profile to connect with the computer running ISA Server with quarantine control enabled. 2. The remote-access client passes its authentication credentials to the computer running ISA Server. The computer running ISA Server validates the authentication credentials of the remote-access client and, assuming that the credentials are valid, checks its remote-access policies.
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