WHAT IS A VPN? CAN A VPN HELP ME TO CARRY DATA SECURELY OVER THE INTERNET?
VPN stands for Virtual Private Network. VPNs deliver the advantages of a private network on a shared public infrastructure like the Internet. A VPN provides security by using encryption/decryption. Using a process called ‘tunneling’, private data is encrypted and then encapsulated before being sent across the network. These packets of information are sent to their destination. Only those with the correct protocol information are able to enter a company’s network. A VPN is very useful for providing employees with remote access to your company network without compromising security. However, encryption can have a negative impact on the call quality, as the overhead on the network connection is increased. For example, IPSec, one common type of encryption, adds approximately 10 per cent overhead to VPN traffic.
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