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220-1002 · Question #820

A customer is setting up a new cable modem and wireless router. The customer wants to be able to access a remote desktop while traveling. Which of the following must be configured FIRST to enable…

The correct answer is A. Port forwarding. Port forwarding must be configured first because it tells the router how to route inbound traffic from the internet to the correct internal device. Remote Desktop Protocol (RDP) uses port 3389 by default. Without a port forwarding rule on the cable modem/router, any RDP…

Networking

Question

A customer is setting up a new cable modem and wireless router. The customer wants to be able to access a remote desktop while traveling. Which of the following must be configured FIRST to enable this capability?

Options

  • APort forwarding
  • BDisabling ports
  • CContent filtering
  • DMAC filtering

How the community answered

(45 responses)
  • A
    96% (43)
  • B
    2% (1)
  • D
    2% (1)

Explanation

Port forwarding must be configured first because it tells the router how to route inbound traffic from the internet to the correct internal device. Remote Desktop Protocol (RDP) uses port 3389 by default. Without a port forwarding rule on the cable modem/router, any RDP connection attempt from the internet will be silently dropped - the router has no way to know which internal machine should receive the traffic. B) Disabling ports would block connectivity, not enable it. C) Content filtering controls what websites users can visit, not inbound remote access. D) MAC filtering controls which devices can join the local Wi-Fi network, not external internet access. Port forwarding is the prerequisite that makes remote desktop reachable from outside the network.

Topics

#port forwarding#remote desktop#router configuration#NAT

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