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* Remote access tunneling is a
user to LAN connection.
* Organization users are
connected to a private network from various remote locations by using remote
access VPN.
* Remote access VPNs use
encrypted connections between the organizations private network and remote
users through a third party that provider service.
* Tunneling uses mainly the point
to point protocol in remote access VPN.
* To communicate over internet
PPP helps by carrying other internet protocols as IPsec, L2F, PPTP and L2TP.
Layer 2
Forwarding (L2F) Protocol: it uses the authentication scheme supported by PPP.
Point to Point
Tunneling Protocol (PPTP): It supports 40 bit and 128 bit encryption format and
uses the authentication method supported by PPP.
Layer 2 Tunneling Protocol (L2TP): It
combines the features of both PPTP and L2F.
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