To configure the demanddial interface

Open the Routing And Remote Access snap-in on the answering router. 2. In the console tree, right-click Network Interfaces and then click New Demand-Dial Interface. 3. On the Welcome To The Demand-Dial Interface Wizard page, click Next. 4. On the Interface Name page, type the name of the demand-dial interface and then click Next. 5. On the Connection Type page, click Connect Using Virtual Private Networking (VPN) and then click Next. 6. If you are deploying PPTP as the tunneling protocol, on...

Update Group Policy

At a command prompt, type gpupdate to update Group Policy on CA1. IIS1 To configure the test lab for VPN access and network quarantine, create network resources on IIS1. To create a Web page for network resource access 2. Enter the following text in the file < meta HTTP-EQUIV Content-Type Content text html charset Windows-1252> < title ID titletext> Welcome to Example.com< title> < P> Welcome to Example.com. Your computer has been removed from quara ntine. You now have full...

Routing Table Maintenance Methods

You can add routes to routing tables using the following methods Dynamic routing using routing protocols Static routing using manually-configured static routes It's up to you to analyze the network and decide which method to use at which time and on which portion of the network. Many would say that for the sake of administrative ease you should settle on one method, but a savvy network designer will identify how to use the methods to their best advantage and make them work together to provide...

Installing Computer Certificates

To install a computer certificate, an issuing certification authority (CA) must be present to issue certificates. (Again, see Appendix C for information on how to set this up.) Once the issuing CA is configured, you can install a computer certificate in any one of the following ways By configuring the automatic allocation of computer certificates to computers in an Active Directory directory service domain By using a Web browser to request a computer certificate By using the Certificates...

Deploying the Intersite Network Infrastructure

It is not enough that each router needs to know about the routes within its site each router needs to also know about the routes in the other VPN router's site so that it can correctly forward traffic to the other side of the site-to-site VPN connection. Deploying the intersite network infrastructure consists of configuring each VPN router with the set of routes for subnets that are available in the other sites (across each site-to-site VPN connection). This can be done in the following ways...

Layer Two Tunneling Protocol LTP

L2TP is a combination of PPTP and Layer 2 Forwarding L2F , a technology proposed by Cisco Systems, Inc. L2TP represents the best features of PPTP and L2F. L2TP encapsulates PPP frames to be sent over IP, X.25, frame relay, or ATM networks. When configured to use IP as its datagram transport, L2TP can be used as a tunneling protocol over the Internet. L2TP is documented in RFC 2661. L2TP over IP internetworks uses UDP and a series of L2TP messages for tunnel management. L2TP also uses UDP to...

Use the netsh ras add registeredserver command or

Add the computer account of the IAS server to the RAS And IAS Servers security group by using the Active Directory Users And Computers snap-in. If the IAS server is to authenticate and authorize VPN connection attempts for user accounts in other domains, verify that the other domains have a two-way trust with the domain in which the IAS server computer is a member. Next, configure the IAS server computer to read the properties of user accounts in other domains by using the netsh ras add...

Routing

By its very nature and purpose, the VPN server is an IP router. This is because it connects two or more network subnets in this case, the Internet and the intra-net and, as such, must be properly configured with the set of routes that makes all locations reachable. Specifically, the VPN server needs the following On the Internet-attached interface, a default route that points to a firewall or router directly connected to the Internet. This route makes all locations on the Internet reachable....

Unable to Connect

The Unable to connect problem is a broad one. With all the different pieces involved in negotiating a VPN session, the connection problems can come from many areas. The good news is that Windows has all the functionality built into the base operating system, so you do not need to worry about third-party interoperability issues. When a VPN client is unable to connect, check the following Using the ping command when connected to the Internet, verify that the host name for the VPN server is being...

VPN Interoperability

The Microsoft Windows Server 2003 family of operating systems and all of the Windows VPN client operating systems have integrated virtual private network VPN technology that helps provide secure, low-cost remote access and branch office connectivity over the Internet. Windows Server 2003 virtual private networking has been designed to interoperate with VPN software and devices that support industry standards for secure remote access. Windows XP and down-level clients all have built-in support...