Exam-style question
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Explain the basic concept of port forwarding and why it is used. Include what happens to incoming traffic and give one suitable example.
Model answer
What a good answer should say
- Port forwarding is a rule configured on network equipment that directs incoming traffic received on a specified port to a particular device or service inside a network.
- It is used when an internal service needs to be reached by users or systems outside the network.
- For example, a server inside a network could be made available to external users by forwarding the port used by that server to the server's internal address.
Explanation
Why this works
A strong answer identifies the incoming port, the internal destination, and the purpose of making a selected internal service externally accessible. An example such as an internal server demonstrates why the rule is needed.
Common mistake
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