You connect a portable Windows 8.1 computer to a corporate network by using a VPN connection. You are unable to access websites on the Internet only when you are using the VPN connection.
You need to ensure that you can access websites when connected to the corporate network.
What should you do?
A. Configure the VPN connection to use only L2TP/IPSec.
B. In the TCP/IPv4 properties of the VPN connection, disable the Use default gateway on remote network setting.
C. Configure the VPN connection to use only PPTP.
D. In the TCP/IPv4 properties of the VPN connection, enable the Use default gateway on remote network setting.
E. In the TCP/IPv4 properties of the local area connection, disable the Automatic metric setting.
Correct Answer: B
Explanation/Reference:
http://support.microsoft.com/kb/317025
You Cannot Connect to the Internet After You Connect to a VPN Server
After you use a Virtual Private Network (VPN) connection to log on to a server that is running Routing and Remote Access, you may be unable to connect to the Internet.
This issue may occur if you configure the VPN connection to use the default gateway on the remote network. This setting overrides the default gateway settings that you specify in your Transmission Control Protocol/Internet Protocol (TCP/IP) settings.
To resolve this issue, configure the client computers to use the default gateway setting on the local network for Internet traffic and a static route on the remote network for VPN-based traffic.
..
To disable the Use Default Gateway on Remote Network setting in the VPN dial-up connection item on the client computer:
Double-click My Computer, and then click the Network and Dial-up Connections link.
1.
Right-click the VPN connection that you want to change, and then click Properties.
2.
Click the Networking tab, click Internet Protocol (TCP/IP) in the Components checked are used by this 3. connection list, and then click Properties.
Click Advanced, and then click to clear the Use default gateway on remote network check box.
4.
Click OK, click OK, and then click OK.
5.
…
Further information:
http://www.mydigitallife.info/disable-windows-tcpip-routing-automatic-metric-calculation-feature/ Disable Windows TCP/IP Routing Automatic Metric Calculation Feature
TCP/IP, which Internet depending on, is a packet switching network that relies on routing to get data packets forward and transmit to the destination address. Routing, or routeing, is a process of selecting paths in the network along intermediate nodes such as routers, bridges, gateways, firewalls, switches, or hubs, which to send network traffic.
During routing, the selection of path is based on a routing metric, if there are more that one routes to the destination, such as in computers with multiple network cards. Path selection selects or predicts the best and optimized route metric wihch is computed by a routing algorithm which takes into account information such as bandwidth, network delay, hop count, path cost, load, MTU, reliability, and communication cost.
In Windows, metric calculation is automatically been done for each network interface or connection available. In the automatic metric calculation does not result in best network performance and routing cost, user can disable the automatic metric calculation feature and manually set a metric value.