Free VPN Service for Device

Learn more about VPN and PPTP: https://com.puter.tips/2018/09/free-vpn-service-for-router.html

OSI model layers

---

The main concept of OSI is that the process of communication between two endpoints in a network can be divided into seven distinct groups of related functions, or layers. Each communicating user or program is on a device that can provide those seven layers of function. In this architecture, each layer serves the layer above it and, in turn, is served by the layer below it. So, in a given message between users, there will be a flow of data down through the layers in the source computer, across the network, and then up through the layers in the receiving computer. The seven layers of function are provided by a combination of applications, operating systems, network card device drivers and networking hardware that enable a system to transmit a signal over a network Ethernet or fiber optic cable or through Wi-Fi or other wireless protocols.

Data Link (Layer 2)

---

At OSI Model, Layer 2, data packets are encoded and decoded into bits. It furnishes transmission protocol knowledge and management and handles errors in the physical layer, flow control and frame synchronization. The data link layer is divided into two sub layers: The Media Access Control (MAC) layer and the Logical Link Control (LLC) layer. The MAC sub layer controls how a computer on the network gains access to the data and permission to transmit it. The LLC layer controls frame synchronization, flow control and error checking. Layer 2 Data Link examples include PPP, FDDI, ATM, IEEE 802.5/ 802.2, IEEE 802.3/802.2, HDLC, Frame Relay.

Layer 2 Tunneling Protocol (L2TP)

---

In computer networking, Layer 2 Tunneling Protocol (L2TP) is a tunneling protocol used to support virtual private networks (VPNs) or as part of the delivery of services by ISPs. It does not provide any encryption or confidentiality by itself. Depending on the exact set-up of the network, L2TP requires UDP ports 500, 1701 and 4500 and the IP-ESP protocol, which is IP protocol 50; ESP. Other than ESP (which is protocol 50 and not port 50), these are UDP ports, and not TCP. TCP 1723 is used for PPTP.

PPTP vs L2TP

---

L2TP/IPSec provides a highly secure and reliable connection. L2TP is advanced protocol when compared to PPTP and is combined with IPSec in order to obtain better security. The speed may be lower than PPTP but Internet speed varies based on a number of factors. Usually, the difference in speed is negligible. PPTP is a fast, easy-to-use protocol. It is a good choice if OpenVPN isn't supported by your device. L2TP/IPsec is a good choice if OpenVPN isn't supported by your device and security is top priority. OpenVPN is the recommended protocol for desktops including Windows, Mac OS X and Linux.

Enable Free L2TP VPN Service on Device

---

In Windows 10 go to Home > Settings > Network & Internet > VPN > Add a VPN connection > VPN Type with L2TP/IPsec with pre-shared key and use one of the following credentials.

Server 1: 37.48.118.236
Username 1: freel2tpvpn.com

Password 1: 2875

Pre-Shared Key 1: freel2tpvpn.com

Server 2: 37.48.118.195

Username 2: free

Password 2: 2206

Pre-Shared Key 2: superfreevpn.com

Server 3: 80.241.222.247

Username 3: free

Password 3: 2129

Pre-Shared Key 3: superfreevpn.com

Server 4: 173.193.200.124

Username 4: justfreevpn

Password 4: 2249

Pre-Shared Key 4: justfreevpn