Layer 2 Tunneling Protocol - Wikipedia
10 Protocols of VPN | IPSec, PPTP, L2TP, MPLS etc. ⋆ IpCisco Internet Protocol Security (IPSec) One of the most important Protocols of VPN is IPSec. IPSec is a … PPTP and L2TP - Fortinet A virtual private network (VPN) is a way to use a public network, such as the Internet, as a vehicle to provide remote offices or individual users with secure access to private networks. FortiOS supports the Point-to-Point Tunneling Protocol (PPTP), which enables interoperability between FortiGate units and Windows or Linux PPTP clients. What is a VPN port? | VPNpro
What ports are used by your VPN service? - Knowledgebase
Which is the Best VPN Protocol? PPTP vs. OpenVPN vs. L2TP
PPTP vpn ports - Cisco Community
Avast SecureLine Firewall Ports Mar 27, 2013