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when trying to sign on to vpn 4.0.2 after hittong thre connect button the user authentication box appears with username already populated but the user is not allowed to enter his passcode because the box disappears.
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when trying to sign on to vpn 4.0.2 after hittong thre connect button the user authentication box appears with username already populated but the user is not allowed to enter his passcode because the box disappears.

VPN will not allow user to be authenticated

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.