Even though the VPN concept implies security most of the time, unsecured VPNs also exist. Frame Relay is an example of this because it provides private communications between two locations, but it might not have any security features on top of it. The decision to add security to the VPN connection depends on the specific requirements for that connection.
VPN troubleshooting is difficult to manage because of the lack of visibility in the P network infrastructure. The P network is usually seen as a cloud that aggregates all of the network locations’ connections. When performing VPN troubleshooting, first ensure that . . .
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