My VPN Cannot Ping But My RDP Can Ping
A virtual private network -- a VPN --allows remote users to connect to a local area network or from one LAN to another using the Internet. Remote Desktop Protocol -- RDP --allows one computer to share files with another, either within the same network or via the Internet. If you can't ping a VPN, you don't have a connection to its server.
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Ping
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The term "ping" comes from submarine jargon for a sonar pulse sent to bounce off another object to determine its location. Computer technology uses the letters to form the acronym for "Packet INternet Grouper," a utility that sends a burst of information from one computer to another computer or a server to find out if it is available for a connection. A returned message affirms availability and tells the amount of time taken for the signal to make the round trip.
VPN
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In a VPN, the router in a LAN that makes its connection to the Internet has programming that allows authorized users to enter the LAN with a username and password. Because the router has a standard Internet address such as "www.thenetwork.com," any user can enter it into his browser to establish a connection. But he can't enter the LAN without authorization. A ping to the LAN in a VPN sends it a message to see if it is available, without making a connection.
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RDP
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RDP allows a computer operator to use one keyboard and monitor to operate another remote computer, usually within the same network. It transfers computer and mouse information to the distant computer and sends screen information back to the original monitor. When used in a centralized data system, remote desktop systems allow computers to share information via a common server. A ping within a network with RDP only tells if the remote equipment is available for a connection.
RDP Ping OK, VPN Not
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If your computer can ping your RDP equipment within the LAN, but can't ping the VPN site, your LAN Internet connection may have failed. Try establishing a connection to any Internet site. If that works, the distant VPN may not be connected to the Internet or the server could have failed or be turned off. If your RDP connects via the Internet, the trouble can only be at VPN server. Your connection to the RDP proves your Internet connection is OK.
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References
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