Virtual Private Network - the Netgroup at Politecnico di Torino
Virtual Private Network - the Netgroup at Politecnico di Torino
Virtual Private Network - the Netgroup at Politecnico di Torino
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Access VPN: Two Protocols<br />
• L2TP (Layer 2 Tunneling Protocol)<br />
• Not widely implemented in terminals<br />
• Idependent of layer 2 protocol<br />
• Security through IPsec<br />
• Strong<br />
• But complic<strong>at</strong>ed<br />
• PPTP (Point-to-Point Tunneling Protocol)<br />
• Originally proposed by Microsoft, Apple, …<br />
• Integr<strong>at</strong>ed in <strong>the</strong> <strong>di</strong>al-up networking<br />
• Multiprotocol<br />
• Weak encryption and au<strong>the</strong>ntic<strong>at</strong>ion<br />
• Proprietary key management<br />
VPN - 46 © M. Bal<strong>di</strong> & L. Ciminiera: see page 2