If this ping fails where the IP address ping succeeded, you have a DNS problem, because the client is unable to resolve the server’s name to an IP address. If the ping is successful, then ping the server again, but this time ping by the server’s fully qualified domain name (FQDN) rather than by its address. You should ping by IP address initially so that you can verify that basic TCP/IP connectivity exists. Once you’ve verified that the necessary services are running, try pinging the VPN server by IP address from the VPN client. You can check this by opening the server’s Control Panel and clicking on the Administrative Tools icon, followed by the Services icon. If your VPN server is rejecting client connections, the first thing you need to do is to check to make sure the Routing And Remote Access service is running. Part of the reason this problem is so common is that there are a lot of issues that can cause a connection to be rejected. Having a VPN client’s connection rejected is perhaps the most common VPN problem.
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SEE: How to work from home: IT pro’s guidebook to telecommuting and remote work (TechRepublic Premium) What’s the problem? Here are several techniques you can use to troubleshoot VPN connections. Even so, VPN connections do occasionally experience problems.
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Although VPNs initially became popular because they free companies from the expense of connecting networks with dedicated leased lines, part of the reason that VPNs have become so accepted is that they tend to be very reliable. VPNs have gone from obscurity to being a common method of linking private networks together across the Internet. This tip was first published in May 2003. Editor’s note: In the video, Brandon Vigliarolo uses Microsoft Windows Server 2016, and some of the steps and menus are different from the following tutorial by Brien Posey.