HOTSPOT
You have a server named Server1 that runs Windows Server 2012 R2. Server1 has the Remote Access server role installed. You need to configure the ports on Server1 to ensure that client computers can establish VPN connections to Server1. The solution must NOT require the use of certificates or pre-shared keys.
What should you modify? To answer, select the appropriate object in the answer area.
Answer: 
Explanation:
The four types of tunneling protocols used with a VPN/RAS server running on Windows Server 2012 include:
Point-to-Point Tunneling Protocol (PPTP): A VPN protocol based on the legacy Point-to-Point protocol used with modems. The PPTP specification does not describeencryption or authentication features and relies on the Point-to-Point Protocol being tunneled to implement security functionality.
Layer 2 Tunneling Protocol (L2TP): Used with IPsec to provide security. L2TP supports either computer certificates or a preshared key as the authentication method for IPsec.
IKEv2: IKE is short for Internet Key Exchange, which is a tunneling protocol that uses IPsec Tunnel Mode protocol. The message is encrypted with one of the following protocols by using encryption keys that are generated from the IKEv2 negotiation process.
Secure Socket Tunneling Protocol (SSTP): Introduced with Windows Server 2008, which uses the HTTPS protocol over TCP port 443 to pass traffic through firewalls
References:
http://en.wikipedia.org/wiki/Point-to-Point_Tunneling_Protocol
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