Layer 6 - Presentation The presentation layer "presents" the session layer data to the application. Examples of what is located here are: encryption (like IPSec), ASCII, and JPG.

(SSL/TLS, 22.10.2 TLS, might be an example of a true layer providing encryption; applications read and write data directly to the SSL/TLS endpoint, which in turn manages the TCP connection.) Generally what happens is that the Application layer manages its own Transport connections, and then reads and writes data directly from and to the Physical Layer Of OSI Model: Working Functionalities and Apr 07, 2016 The Transport Layer: Understanding layer 4 of the OSI Layer 4 is also sort of the "hot" layer right now. Years ago, layer 3 was talked about a lot as layer 3 switches were new on the market and in high demand. Today, layer 4 switches are available

VPN Types Based on OSI Model Layer Based on the OSI model layers, VPNs can be divided into the following three main categories: · Data link layer VPNs · Network layer VPNs · Application layer VPNs Network Layer (Layer 3) VPNs

SSL operates directly on top of the transmission control protocol (TCP), effectively working as a safety blanket. It allows higher protocol layers to remain unchanged while still providing a secure connection. So underneath the SSL layer, the other protocol layers are able to function as normal. Secure Sockets Layer (SSL) is a computer networking protocol for securing connections between network application clients and servers over an insecure network, such as the internet. Due to The link layer corresponds to the OSI data link layer and may include similar functions as the physical layer, as well as some protocols of the OSI's network layer. These comparisons are based on the original seven-layer protocol model as defined in ISO 7498, rather than refinements in the internal organization of the network layer.

layer 3 ( network ) vpn protocols : IPsec,MPLS layer 2 ( data ) vpn protocols : PPTP,L2TP,L2F. layer 4 ( transport ) vpn protocols : SSL/TLS. layer 7 (application ) vpn protocols : SSH. and what about openvpn ? and it will be great to suggest more vpn protocols for me with their related layer in the osi …

What is SSL? (Secure Socket Layer) - Cybrary