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Q. Show VPNs Security and the Internet Model?
- VPN's Security and the Internet Model
- Application layer - provide for each application protocol (other layers may be left vulnerable)
- Transport layer - difficult to change existing protocols
- Network layer - IPsec (additional security for IP)
- Data Link layer - does not provide end-to-end security
Can you Describe what the use of IGMP Protocol is?
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MULTICASTING : The answer to above problem is multicasting. It is the normal form of broadcasting. It acts like broadcasting however it does not broadcast frames automatically
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