D-Link D DFL-500 DFL-500 Manual page 65

To confirm that a VPN between a network and one or more clients has been configured correctly, start a VPN
client and use the ping command to connect to a computer on the internal network. The VPN tunnel initializes
automatically when the client makes a connection attempt. You can start the tunnel and test it at the same
time by pinging from the client to an address on the internal network.
DFL-500 User Manual
65