QUICK DISCUSSION & RESPONSE ACTIVITY

QUICKDISCUSSION & RESPONSE ACTIVITY
 
 
Directions: (PART 1)(PROVIDE SOURCES AT END, ONLY 1-2 SOURCES IS NEEDED)
What are the differences betweenlayer 2, and layer 3 of VPNs? Please explain it in two-three paragraphs withvalid references.

Directions: (PART 2)(There are 2 responses to respond back to)
Respond to these separateresponses with 2-3 sentences each response.

 
1st Response: VPNssolutions works using protocols, in most cases, at layer 2 and layer 3 OS theOpen System Interconnection (OSI) model. There are differences in between eachLayer. First of we have Layer 2; This layer is known as the Data Link Layer.Data is transferred between adjacent network nodes, in this protocol layer.Since we are talking about VPNs in this specific example, data would betransfer from one VPNs endpoint to the other. In other words, data could betransported between two routers. It is important to mention that Layer 2 VPN isless secure, in some cases. On the other hand, we have Layer 3 of VPN. This Layeris known as the Network Layer. As mentioned in the book: “is responsiblefor end-to-end packet delivery and includes the ability to route packets tointermediate hosts (Stewart, et. all. pp 312)”. In other words, data isdelivered and sent on the core of VPN infrastructure. In contrast with Layer 2,Layer 3 is usually more secure, and scalable. One example provided to us usingLayer 3 is Internet Protocol Security (IPsec). As we know, IPsec encrypts the packets being sent, thus this iswhat makes Layer 3 more secure than Layer 2.
 

2nd Response: Animportant observation about VPN is that they use multiple protocols as a way toestablish connection. This is really important because it can keep VPNs safethrough different authentication and encryption mechanisms, as well as run indifferent layers of the OSI model. Most VPNs work at Layers 2 and 3 of the OSImodel. Layer 2 VPN ( Data Link Layer), is the protocol of the OSI model thatworks with MAC addresses and transfer data between adjacent network nodes. Themain protocol used by VPN in this layer is the Layer 2 Transport Protocol(L2TP). When using Layer 3 (Network Layer) of the OSI model, VPN becomes muchmore scalable because IP addresses are being used, allowing communication withdevices form anywhere.
 

NOTE: PLEASE RESPOND SEPARATELYTO THESE 2 DIFFERENT RESPONSES! THANK YOU!