NETWORK SECURITY
FIREWALLS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An open standard for secure multi-protocol routing; uses TCP port 1701 and UDP port 500
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PPTP
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L2F
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L2TP
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IPsec
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Explanation:
Detailed explanation-1: -By default, L2TP uses IPSec, which requires UDP ports 500 and 4500, and ESP IP Protocol 50. If you disable IPSec, Mobile VPN with L2TP requires only UDP port 1701.
Detailed explanation-2: -L2TP is actually a variation of an IP encapsulation protocol. The L2TP tunnel is created by encapsulating an L2TP frame inside a User Datagram Protocol (UDP) packet, which in turn is encapsulated inside an IP packet. The source and destination addresses of this IP packet define the endpoints of the connection.
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