1. What is the largest security risk in a SDN? 2. What is the largest disadvantage...

1. What is the largest security risk in a SDN?

2. What is the largest disadvantage of NFV?

3. To what layer are the servers connected in a layered network topology?

4. When is a spine and leaf network preferred over a layered network topology?

5. What is the difference between an IDS and an IPS?

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Expert Solution

1. SDN

SDN stands for Software Defined Network. In this architecture, the control plane is separated from the data plane. It is implemented in a software application.

The controller is the most important component of the SDN architecture.

The largest security risk of SDN:

Attacks on the controller are the most severe threat to the SDN architecture.
If the controller is harmed, the data path may get disrupted.
The instructions can be changed if the attacker is can access the controller. The attacker may establish communication for sending malicious content.

2. NFV

NFV stands for Network Function Virtualization.

It is used for the decoupling of network functions from the proprietary hardware and running them like the software in virtual machines.

The infrastructure is independent of the hardware.

The largest disadvantage of NFV:

The three components of NFV are- NVF manager, VNFs, and the NFV infrastructure.

These components are joined together. So, it adds complexity and difficulty when deployed at the NFV scale.

Other disadvantages are:

IT has to be managed in the abstract.
Additional features are required because the environment is dynamic.
Traditional and virtual infrastructure have to be managed at the same time.

venereology answered 11 months ago

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